mirror of
https://github.com/FEX-Emu/linux.git
synced 2024-12-16 22:10:24 +00:00
Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (32 commits) x86: add MAP_STACK mmap flag x86: fix section mismatch warning - spp_getpage() x86: change init_gdt to update the gdt via write_gdt, rather than a direct write. x86-64: fix overlap of modules and fixmap areas x86, geode-mfgpt: check IRQ before using MFGPT as clocksource x86, acpi: cleanup, temp_stack is used only when CONFIG_SMP is set x86: fix spin_is_contended() x86, nmi: clean UP NMI watchdog failure message x86, NMI: fix watchdog failure message x86: fix /proc/meminfo DirectMap x86: fix readb() et al compile error with gcc-3.2.3 arch/x86/Kconfig: clean up, experimental adjustement x86: invalidate caches before going into suspend x86, perfctr: don't use CCCR_OVF_PMI1 on Pentium 4Ds x86, AMD IOMMU: initialize dma_ops after sysfs registration x86m AMD IOMMU: cleanup: replace LOW_U32 macro with generic lower_32_bits x86, AMD IOMMU: initialize device table properly x86, AMD IOMMU: use status bit instead of memory write-back for completion wait x86: silence mmconfig printk x86, msr: fix NULL pointer deref due to msr_open on nonexistent CPUs ...
This commit is contained in:
Linus Torvalds
commit
0473b79929
@ -951,9 +951,9 @@ config NUMA
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local memory controller of the CPU and add some more
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NUMA awareness to the kernel.
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For i386 this is currently highly experimental and should be only
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For 32-bit this is currently highly experimental and should be only
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used for kernel development. It might also cause boot failures.
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For x86_64 this is recommended on all multiprocessor Opteron systems.
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For 64-bit this is recommended on all multiprocessor Opteron systems.
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If the system is EM64T, you should say N unless your system is
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EM64T NUMA.
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@ -1263,7 +1263,7 @@ config KEXEC
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strongly in flux, so no good recommendation can be made.
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config CRASH_DUMP
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bool "kernel crash dumps (EXPERIMENTAL)"
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bool "kernel crash dumps"
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depends on X86_64 || (X86_32 && HIGHMEM)
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help
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Generate crash dump after being started by kexec.
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@ -24,6 +24,8 @@
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#include <linux/edd.h>
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#include <asm/boot.h>
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#include <asm/setup.h>
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#include "bitops.h"
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#include <asm/cpufeature.h>
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/* Useful macros */
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#define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)]))
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@ -242,6 +244,12 @@ int cmdline_find_option(const char *option, char *buffer, int bufsize);
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int cmdline_find_option_bool(const char *option);
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/* cpu.c, cpucheck.c */
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struct cpu_features {
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int level; /* Family, or 64 for x86-64 */
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int model;
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u32 flags[NCAPINTS];
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};
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extern struct cpu_features cpu;
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int check_cpu(int *cpu_level_ptr, int *req_level_ptr, u32 **err_flags_ptr);
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int validate_cpu(void);
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@ -16,9 +16,6 @@
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*/
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#include "boot.h"
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#include "bitops.h"
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#include <asm/cpufeature.h>
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#include "cpustr.h"
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static char *cpu_name(int level)
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@ -22,21 +22,13 @@
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#ifdef _SETUP
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# include "boot.h"
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# include "bitops.h"
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#endif
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#include <linux/types.h>
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#include <asm/cpufeature.h>
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#include <asm/processor-flags.h>
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#include <asm/required-features.h>
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#include <asm/msr-index.h>
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struct cpu_features {
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int level; /* Family, or 64 for x86-64 */
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int model;
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u32 flags[NCAPINTS];
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};
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static struct cpu_features cpu;
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struct cpu_features cpu;
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static u32 cpu_vendor[3];
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static u32 err_flags[NCAPINTS];
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@ -73,6 +73,11 @@ static void keyboard_set_repeat(void)
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*/
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static void query_ist(void)
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{
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/* Some older BIOSes apparently crash on this call, so filter
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it from machines too old to have SpeedStep at all. */
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if (cpu.level < 6)
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return;
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asm("int $0x15"
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: "=a" (boot_params.ist_info.signature),
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"=b" (boot_params.ist_info.command),
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@ -97,6 +97,8 @@ static u64 acpi_lapic_addr __initdata = APIC_DEFAULT_PHYS_BASE;
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#warning ACPI uses CMPXCHG, i486 and later hardware
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#endif
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static int acpi_mcfg_64bit_base_addr __initdata = FALSE;
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/* --------------------------------------------------------------------------
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Boot-time Configuration
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-------------------------------------------------------------------------- */
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@ -158,6 +160,14 @@ char *__init __acpi_map_table(unsigned long phys, unsigned long size)
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struct acpi_mcfg_allocation *pci_mmcfg_config;
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int pci_mmcfg_config_num;
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static int __init acpi_mcfg_oem_check(struct acpi_table_mcfg *mcfg)
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{
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if (!strcmp(mcfg->header.oem_id, "SGI"))
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acpi_mcfg_64bit_base_addr = TRUE;
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return 0;
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}
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int __init acpi_parse_mcfg(struct acpi_table_header *header)
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{
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struct acpi_table_mcfg *mcfg;
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@ -190,8 +200,12 @@ int __init acpi_parse_mcfg(struct acpi_table_header *header)
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}
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memcpy(pci_mmcfg_config, &mcfg[1], config_size);
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acpi_mcfg_oem_check(mcfg);
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for (i = 0; i < pci_mmcfg_config_num; ++i) {
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if (pci_mmcfg_config[i].address > 0xFFFFFFFF) {
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if ((pci_mmcfg_config[i].address > 0xFFFFFFFF) &&
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!acpi_mcfg_64bit_base_addr) {
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printk(KERN_ERR PREFIX
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"MMCONFIG not in low 4GB of memory\n");
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kfree(pci_mmcfg_config);
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@ -20,7 +20,7 @@ unsigned long acpi_realmode_flags;
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/* address in low memory of the wakeup routine. */
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static unsigned long acpi_realmode;
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#ifdef CONFIG_64BIT
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#if defined(CONFIG_SMP) && defined(CONFIG_64BIT)
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static char temp_stack[10240];
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#endif
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@ -101,16 +101,13 @@ static int iommu_queue_command(struct amd_iommu *iommu, struct iommu_cmd *cmd)
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*/
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static int iommu_completion_wait(struct amd_iommu *iommu)
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{
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int ret;
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int ret, ready = 0;
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unsigned status = 0;
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struct iommu_cmd cmd;
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volatile u64 ready = 0;
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unsigned long ready_phys = virt_to_phys(&ready);
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unsigned long i = 0;
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memset(&cmd, 0, sizeof(cmd));
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cmd.data[0] = LOW_U32(ready_phys) | CMD_COMPL_WAIT_STORE_MASK;
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cmd.data[1] = upper_32_bits(ready_phys);
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cmd.data[2] = 1; /* value written to 'ready' */
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cmd.data[0] = CMD_COMPL_WAIT_INT_MASK;
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CMD_SET_TYPE(&cmd, CMD_COMPL_WAIT);
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iommu->need_sync = 0;
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@ -122,9 +119,15 @@ static int iommu_completion_wait(struct amd_iommu *iommu)
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while (!ready && (i < EXIT_LOOP_COUNT)) {
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++i;
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cpu_relax();
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/* wait for the bit to become one */
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status = readl(iommu->mmio_base + MMIO_STATUS_OFFSET);
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ready = status & MMIO_STATUS_COM_WAIT_INT_MASK;
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}
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/* set bit back to zero */
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status &= ~MMIO_STATUS_COM_WAIT_INT_MASK;
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writel(status, iommu->mmio_base + MMIO_STATUS_OFFSET);
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if (unlikely((i == EXIT_LOOP_COUNT) && printk_ratelimit()))
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printk(KERN_WARNING "AMD IOMMU: Completion wait loop failed\n");
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@ -161,7 +164,7 @@ static int iommu_queue_inv_iommu_pages(struct amd_iommu *iommu,
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address &= PAGE_MASK;
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CMD_SET_TYPE(&cmd, CMD_INV_IOMMU_PAGES);
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cmd.data[1] |= domid;
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cmd.data[2] = LOW_U32(address);
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cmd.data[2] = lower_32_bits(address);
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cmd.data[3] = upper_32_bits(address);
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if (s) /* size bit - we flush more than one 4kb page */
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cmd.data[2] |= CMD_INV_IOMMU_PAGES_SIZE_MASK;
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@ -800,6 +800,21 @@ static int __init init_memory_definitions(struct acpi_table_header *table)
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return 0;
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}
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/*
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* Init the device table to not allow DMA access for devices and
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* suppress all page faults
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*/
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static void init_device_table(void)
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{
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u16 devid;
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for (devid = 0; devid <= amd_iommu_last_bdf; ++devid) {
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set_dev_entry_bit(devid, DEV_ENTRY_VALID);
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set_dev_entry_bit(devid, DEV_ENTRY_TRANSLATION);
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set_dev_entry_bit(devid, DEV_ENTRY_NO_PAGE_FAULT);
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}
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}
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/*
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* This function finally enables all IOMMUs found in the system after
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* they have been initialized
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@ -931,6 +946,9 @@ int __init amd_iommu_init(void)
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if (amd_iommu_pd_alloc_bitmap == NULL)
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goto free;
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/* init the device table */
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init_device_table();
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/*
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* let all alias entries point to itself
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*/
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@ -954,10 +972,6 @@ int __init amd_iommu_init(void)
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if (acpi_table_parse("IVRS", init_memory_definitions) != 0)
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goto free;
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ret = amd_iommu_init_dma_ops();
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if (ret)
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goto free;
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ret = sysdev_class_register(&amd_iommu_sysdev_class);
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if (ret)
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goto free;
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@ -966,6 +980,10 @@ int __init amd_iommu_init(void)
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if (ret)
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goto free;
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ret = amd_iommu_init_dma_ops();
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if (ret)
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goto free;
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enable_iommus();
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printk(KERN_INFO "AMD IOMMU: aperture size is %d MB\n",
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@ -1454,8 +1454,6 @@ void disconnect_bsp_APIC(int virt_wire_setup)
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}
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}
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|
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unsigned int __cpuinitdata maxcpus = NR_CPUS;
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void __cpuinit generic_processor_info(int apicid, int version)
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{
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int cpu;
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@ -1482,12 +1480,6 @@ void __cpuinit generic_processor_info(int apicid, int version)
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return;
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}
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|
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if (num_processors >= maxcpus) {
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printk(KERN_WARNING "WARNING: maxcpus limit of %i reached."
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" Processor ignored.\n", maxcpus);
|
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return;
|
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}
|
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|
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num_processors++;
|
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cpus_complement(tmp_map, cpu_present_map);
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cpu = first_cpu(tmp_map);
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|
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@ -90,7 +90,6 @@ static unsigned long apic_phys;
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|
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unsigned long mp_lapic_addr;
|
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|
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unsigned int __cpuinitdata maxcpus = NR_CPUS;
|
||||
/*
|
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* Get the LAPIC version
|
||||
*/
|
||||
@ -1062,12 +1061,6 @@ void __cpuinit generic_processor_info(int apicid, int version)
|
||||
return;
|
||||
}
|
||||
|
||||
if (num_processors >= maxcpus) {
|
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printk(KERN_WARNING "WARNING: maxcpus limit of %i reached."
|
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" Processor ignored.\n", maxcpus);
|
||||
return;
|
||||
}
|
||||
|
||||
num_processors++;
|
||||
cpus_complement(tmp_map, cpu_present_map);
|
||||
cpu = first_cpu(tmp_map);
|
||||
|
||||
@ -478,7 +478,13 @@ static int setup_p4_watchdog(unsigned nmi_hz)
|
||||
perfctr_msr = MSR_P4_IQ_PERFCTR1;
|
||||
evntsel_msr = MSR_P4_CRU_ESCR0;
|
||||
cccr_msr = MSR_P4_IQ_CCCR1;
|
||||
cccr_val = P4_CCCR_OVF_PMI1 | P4_CCCR_ESCR_SELECT(4);
|
||||
|
||||
/* Pentium 4 D processors don't support P4_CCCR_OVF_PMI1 */
|
||||
if (boot_cpu_data.x86_model == 4 && boot_cpu_data.x86_mask == 4)
|
||||
cccr_val = P4_CCCR_OVF_PMI0;
|
||||
else
|
||||
cccr_val = P4_CCCR_OVF_PMI1;
|
||||
cccr_val |= P4_CCCR_ESCR_SELECT(4);
|
||||
}
|
||||
|
||||
evntsel = P4_ESCR_EVENT_SELECT(0x3F)
|
||||
|
||||
@ -222,7 +222,7 @@ static __init void map_low_mmrs(void)
|
||||
|
||||
enum map_type {map_wb, map_uc};
|
||||
|
||||
static void map_high(char *id, unsigned long base, int shift, enum map_type map_type)
|
||||
static __init void map_high(char *id, unsigned long base, int shift, enum map_type map_type)
|
||||
{
|
||||
unsigned long bytes, paddr;
|
||||
|
||||
|
||||
@ -88,6 +88,7 @@ void __init x86_64_start_kernel(char * real_mode_data)
|
||||
BUILD_BUG_ON(!(MODULES_VADDR > __START_KERNEL));
|
||||
BUILD_BUG_ON(!(((MODULES_END - 1) & PGDIR_MASK) ==
|
||||
(__START_KERNEL & PGDIR_MASK)));
|
||||
BUILD_BUG_ON(__fix_to_virt(__end_of_fixed_addresses) <= MODULES_END);
|
||||
|
||||
/* clear bss before set_intr_gate with early_idt_handler */
|
||||
clear_bss();
|
||||
|
||||
@ -359,6 +359,7 @@ static int hpet_clocksource_register(void)
|
||||
int __init hpet_enable(void)
|
||||
{
|
||||
unsigned long id;
|
||||
int i;
|
||||
|
||||
if (!is_hpet_capable())
|
||||
return 0;
|
||||
@ -369,6 +370,29 @@ int __init hpet_enable(void)
|
||||
* Read the period and check for a sane value:
|
||||
*/
|
||||
hpet_period = hpet_readl(HPET_PERIOD);
|
||||
|
||||
/*
|
||||
* AMD SB700 based systems with spread spectrum enabled use a
|
||||
* SMM based HPET emulation to provide proper frequency
|
||||
* setting. The SMM code is initialized with the first HPET
|
||||
* register access and takes some time to complete. During
|
||||
* this time the config register reads 0xffffffff. We check
|
||||
* for max. 1000 loops whether the config register reads a non
|
||||
* 0xffffffff value to make sure that HPET is up and running
|
||||
* before we go further. A counting loop is safe, as the HPET
|
||||
* access takes thousands of CPU cycles. On non SB700 based
|
||||
* machines this check is only done once and has no side
|
||||
* effects.
|
||||
*/
|
||||
for (i = 0; hpet_readl(HPET_CFG) == 0xFFFFFFFF; i++) {
|
||||
if (i == 1000) {
|
||||
printk(KERN_WARNING
|
||||
"HPET config register value = 0xFFFFFFFF. "
|
||||
"Disabling HPET\n");
|
||||
goto out_nohpet;
|
||||
}
|
||||
}
|
||||
|
||||
if (hpet_period < HPET_MIN_PERIOD || hpet_period > HPET_MAX_PERIOD)
|
||||
goto out_nohpet;
|
||||
|
||||
|
||||
@ -33,6 +33,8 @@
|
||||
#include <linux/module.h>
|
||||
#include <asm/geode.h>
|
||||
|
||||
#define MFGPT_DEFAULT_IRQ 7
|
||||
|
||||
static struct mfgpt_timer_t {
|
||||
unsigned int avail:1;
|
||||
} mfgpt_timers[MFGPT_MAX_TIMERS];
|
||||
@ -157,29 +159,48 @@ int geode_mfgpt_toggle_event(int timer, int cmp, int event, int enable)
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(geode_mfgpt_toggle_event);
|
||||
|
||||
int geode_mfgpt_set_irq(int timer, int cmp, int irq, int enable)
|
||||
int geode_mfgpt_set_irq(int timer, int cmp, int *irq, int enable)
|
||||
{
|
||||
u32 val, dummy;
|
||||
int offset;
|
||||
u32 zsel, lpc, dummy;
|
||||
int shift;
|
||||
|
||||
if (timer < 0 || timer >= MFGPT_MAX_TIMERS)
|
||||
return -EIO;
|
||||
|
||||
if (geode_mfgpt_toggle_event(timer, cmp, MFGPT_EVENT_IRQ, enable))
|
||||
/*
|
||||
* Unfortunately, MFGPTs come in pairs sharing their IRQ lines. If VSA
|
||||
* is using the same CMP of the timer's Siamese twin, the IRQ is set to
|
||||
* 2, and we mustn't use nor change it.
|
||||
* XXX: Likewise, 2 Linux drivers might clash if the 2nd overwrites the
|
||||
* IRQ of the 1st. This can only happen if forcing an IRQ, calling this
|
||||
* with *irq==0 is safe. Currently there _are_ no 2 drivers.
|
||||
*/
|
||||
rdmsr(MSR_PIC_ZSEL_LOW, zsel, dummy);
|
||||
shift = ((cmp == MFGPT_CMP1 ? 0 : 4) + timer % 4) * 4;
|
||||
if (((zsel >> shift) & 0xF) == 2)
|
||||
return -EIO;
|
||||
|
||||
rdmsr(MSR_PIC_ZSEL_LOW, val, dummy);
|
||||
/* Choose IRQ: if none supplied, keep IRQ already set or use default */
|
||||
if (!*irq)
|
||||
*irq = (zsel >> shift) & 0xF;
|
||||
if (!*irq)
|
||||
*irq = MFGPT_DEFAULT_IRQ;
|
||||
|
||||
offset = (timer % 4) * 4;
|
||||
|
||||
val &= ~((0xF << offset) | (0xF << (offset + 16)));
|
||||
/* Can't use IRQ if it's 0 (=disabled), 2, or routed to LPC */
|
||||
if (*irq < 1 || *irq == 2 || *irq > 15)
|
||||
return -EIO;
|
||||
rdmsr(MSR_PIC_IRQM_LPC, lpc, dummy);
|
||||
if (lpc & (1 << *irq))
|
||||
return -EIO;
|
||||
|
||||
/* All chosen and checked - go for it */
|
||||
if (geode_mfgpt_toggle_event(timer, cmp, MFGPT_EVENT_IRQ, enable))
|
||||
return -EIO;
|
||||
if (enable) {
|
||||
val |= (irq & 0x0F) << (offset);
|
||||
val |= (irq & 0x0F) << (offset + 16);
|
||||
zsel = (zsel & ~(0xF << shift)) | (*irq << shift);
|
||||
wrmsr(MSR_PIC_ZSEL_LOW, zsel, dummy);
|
||||
}
|
||||
|
||||
wrmsr(MSR_PIC_ZSEL_LOW, val, dummy);
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -242,7 +263,7 @@ EXPORT_SYMBOL_GPL(geode_mfgpt_alloc_timer);
|
||||
static unsigned int mfgpt_tick_mode = CLOCK_EVT_MODE_SHUTDOWN;
|
||||
static u16 mfgpt_event_clock;
|
||||
|
||||
static int irq = 7;
|
||||
static int irq;
|
||||
static int __init mfgpt_setup(char *str)
|
||||
{
|
||||
get_option(&str, &irq);
|
||||
@ -346,7 +367,7 @@ int __init mfgpt_timer_setup(void)
|
||||
mfgpt_event_clock = timer;
|
||||
|
||||
/* Set up the IRQ on the MFGPT side */
|
||||
if (geode_mfgpt_setup_irq(mfgpt_event_clock, MFGPT_CMP2, irq)) {
|
||||
if (geode_mfgpt_setup_irq(mfgpt_event_clock, MFGPT_CMP2, &irq)) {
|
||||
printk(KERN_ERR "mfgpt-timer: Could not set up IRQ %d\n", irq);
|
||||
return -EIO;
|
||||
}
|
||||
@ -374,13 +395,14 @@ int __init mfgpt_timer_setup(void)
|
||||
&mfgpt_clockevent);
|
||||
|
||||
printk(KERN_INFO
|
||||
"mfgpt-timer: registering the MFGPT timer as a clock event.\n");
|
||||
"mfgpt-timer: Registering MFGPT timer %d as a clock event, using IRQ %d\n",
|
||||
timer, irq);
|
||||
clockevents_register_device(&mfgpt_clockevent);
|
||||
|
||||
return 0;
|
||||
|
||||
err:
|
||||
geode_mfgpt_release_irq(mfgpt_event_clock, MFGPT_CMP2, irq);
|
||||
geode_mfgpt_release_irq(mfgpt_event_clock, MFGPT_CMP2, &irq);
|
||||
printk(KERN_ERR
|
||||
"mfgpt-timer: Unable to set up the MFGPT clock source\n");
|
||||
return -EIO;
|
||||
|
||||
@ -131,7 +131,7 @@ static int msr_open(struct inode *inode, struct file *file)
|
||||
ret = -EIO; /* MSR not supported */
|
||||
out:
|
||||
unlock_kernel();
|
||||
return 0;
|
||||
return ret;
|
||||
}
|
||||
|
||||
/*
|
||||
|
||||
@ -114,6 +114,23 @@ static __init void nmi_cpu_busy(void *data)
|
||||
}
|
||||
#endif
|
||||
|
||||
static void report_broken_nmi(int cpu, int *prev_nmi_count)
|
||||
{
|
||||
printk(KERN_CONT "\n");
|
||||
|
||||
printk(KERN_WARNING
|
||||
"WARNING: CPU#%d: NMI appears to be stuck (%d->%d)!\n",
|
||||
cpu, prev_nmi_count[cpu], get_nmi_count(cpu));
|
||||
|
||||
printk(KERN_WARNING
|
||||
"Please report this to bugzilla.kernel.org,\n");
|
||||
printk(KERN_WARNING
|
||||
"and attach the output of the 'dmesg' command.\n");
|
||||
|
||||
per_cpu(wd_enabled, cpu) = 0;
|
||||
atomic_dec(&nmi_active);
|
||||
}
|
||||
|
||||
int __init check_nmi_watchdog(void)
|
||||
{
|
||||
unsigned int *prev_nmi_count;
|
||||
@ -141,15 +158,8 @@ int __init check_nmi_watchdog(void)
|
||||
for_each_online_cpu(cpu) {
|
||||
if (!per_cpu(wd_enabled, cpu))
|
||||
continue;
|
||||
if (get_nmi_count(cpu) - prev_nmi_count[cpu] <= 5) {
|
||||
printk(KERN_WARNING "WARNING: CPU#%d: NMI "
|
||||
"appears to be stuck (%d->%d)!\n",
|
||||
cpu,
|
||||
prev_nmi_count[cpu],
|
||||
get_nmi_count(cpu));
|
||||
per_cpu(wd_enabled, cpu) = 0;
|
||||
atomic_dec(&nmi_active);
|
||||
}
|
||||
if (get_nmi_count(cpu) - prev_nmi_count[cpu] <= 5)
|
||||
report_broken_nmi(cpu, prev_nmi_count);
|
||||
}
|
||||
endflag = 1;
|
||||
if (!atomic_read(&nmi_active)) {
|
||||
|
||||
@ -95,7 +95,6 @@ static inline void play_dead(void)
|
||||
{
|
||||
/* This must be done before dead CPU ack */
|
||||
cpu_exit_clear();
|
||||
wbinvd();
|
||||
mb();
|
||||
/* Ack it */
|
||||
__get_cpu_var(cpu_state) = CPU_DEAD;
|
||||
@ -104,8 +103,8 @@ static inline void play_dead(void)
|
||||
* With physical CPU hotplug, we should halt the cpu
|
||||
*/
|
||||
local_irq_disable();
|
||||
while (1)
|
||||
halt();
|
||||
/* mask all interrupts, flush any and all caches, and halt */
|
||||
wbinvd_halt();
|
||||
}
|
||||
#else
|
||||
static inline void play_dead(void)
|
||||
|
||||
@ -93,14 +93,13 @@ DECLARE_PER_CPU(int, cpu_state);
|
||||
static inline void play_dead(void)
|
||||
{
|
||||
idle_task_exit();
|
||||
wbinvd();
|
||||
mb();
|
||||
/* Ack it */
|
||||
__get_cpu_var(cpu_state) = CPU_DEAD;
|
||||
|
||||
local_irq_disable();
|
||||
while (1)
|
||||
halt();
|
||||
/* mask all interrupts, flush any and all caches, and halt */
|
||||
wbinvd_halt();
|
||||
}
|
||||
#else
|
||||
static inline void play_dead(void)
|
||||
|
||||
@ -445,7 +445,7 @@ static void __init reserve_early_setup_data(void)
|
||||
* @size: Size of the crashkernel memory to reserve.
|
||||
* Returns the base address on success, and -1ULL on failure.
|
||||
*/
|
||||
unsigned long long find_and_reserve_crashkernel(unsigned long long size)
|
||||
unsigned long long __init find_and_reserve_crashkernel(unsigned long long size)
|
||||
{
|
||||
const unsigned long long alignment = 16<<20; /* 16M */
|
||||
unsigned long long start = 0LL;
|
||||
|
||||
@ -104,7 +104,16 @@ static inline int restore_i387(struct _fpstate __user *buf)
|
||||
clts();
|
||||
task_thread_info(current)->status |= TS_USEDFPU;
|
||||
}
|
||||
return restore_fpu_checking((__force struct i387_fxsave_struct *)buf);
|
||||
err = restore_fpu_checking((__force struct i387_fxsave_struct *)buf);
|
||||
if (unlikely(err)) {
|
||||
/*
|
||||
* Encountered an error while doing the restore from the
|
||||
* user buffer, clear the fpu state.
|
||||
*/
|
||||
clear_fpu(tsk);
|
||||
clear_used_math();
|
||||
}
|
||||
return err;
|
||||
}
|
||||
|
||||
/*
|
||||
|
||||
@ -994,17 +994,7 @@ int __cpuinit native_cpu_up(unsigned int cpu)
|
||||
flush_tlb_all();
|
||||
low_mappings = 1;
|
||||
|
||||
#ifdef CONFIG_X86_PC
|
||||
if (def_to_bigsmp && apicid > 8) {
|
||||
printk(KERN_WARNING
|
||||
"More than 8 CPUs detected - skipping them.\n"
|
||||
"Use CONFIG_X86_GENERICARCH and CONFIG_X86_BIGSMP.\n");
|
||||
err = -1;
|
||||
} else
|
||||
err = do_boot_cpu(apicid, cpu);
|
||||
#else
|
||||
err = do_boot_cpu(apicid, cpu);
|
||||
#endif
|
||||
|
||||
zap_low_mappings();
|
||||
low_mappings = 0;
|
||||
@ -1058,6 +1048,34 @@ static __init void disable_smp(void)
|
||||
static int __init smp_sanity_check(unsigned max_cpus)
|
||||
{
|
||||
preempt_disable();
|
||||
|
||||
#if defined(CONFIG_X86_PC) && defined(CONFIG_X86_32)
|
||||
if (def_to_bigsmp && nr_cpu_ids > 8) {
|
||||
unsigned int cpu;
|
||||
unsigned nr;
|
||||
|
||||
printk(KERN_WARNING
|
||||
"More than 8 CPUs detected - skipping them.\n"
|
||||
"Use CONFIG_X86_GENERICARCH and CONFIG_X86_BIGSMP.\n");
|
||||
|
||||
nr = 0;
|
||||
for_each_present_cpu(cpu) {
|
||||
if (nr >= 8)
|
||||
cpu_clear(cpu, cpu_present_map);
|
||||
nr++;
|
||||
}
|
||||
|
||||
nr = 0;
|
||||
for_each_possible_cpu(cpu) {
|
||||
if (nr >= 8)
|
||||
cpu_clear(cpu, cpu_possible_map);
|
||||
nr++;
|
||||
}
|
||||
|
||||
nr_cpu_ids = 8;
|
||||
}
|
||||
#endif
|
||||
|
||||
if (!physid_isset(hard_smp_processor_id(), phys_cpu_present_map)) {
|
||||
printk(KERN_WARNING "weird, boot CPU (#%d) not listed"
|
||||
"by the BIOS.\n", hard_smp_processor_id());
|
||||
@ -1386,17 +1404,3 @@ void __cpu_die(unsigned int cpu)
|
||||
BUG();
|
||||
}
|
||||
#endif
|
||||
|
||||
/*
|
||||
* If the BIOS enumerates physical processors before logical,
|
||||
* maxcpus=N at enumeration-time can be used to disable HT.
|
||||
*/
|
||||
static int __init parse_maxcpus(char *arg)
|
||||
{
|
||||
extern unsigned int maxcpus;
|
||||
|
||||
if (arg)
|
||||
maxcpus = simple_strtoul(arg, NULL, 0);
|
||||
return 0;
|
||||
}
|
||||
early_param("maxcpus", parse_maxcpus);
|
||||
|
||||
@ -8,18 +8,21 @@
|
||||
DEFINE_PER_CPU(unsigned long, this_cpu_off);
|
||||
EXPORT_PER_CPU_SYMBOL(this_cpu_off);
|
||||
|
||||
/* Initialize the CPU's GDT. This is either the boot CPU doing itself
|
||||
(still using the master per-cpu area), or a CPU doing it for a
|
||||
secondary which will soon come up. */
|
||||
/*
|
||||
* Initialize the CPU's GDT. This is either the boot CPU doing itself
|
||||
* (still using the master per-cpu area), or a CPU doing it for a
|
||||
* secondary which will soon come up.
|
||||
*/
|
||||
__cpuinit void init_gdt(int cpu)
|
||||
{
|
||||
struct desc_struct *gdt = get_cpu_gdt_table(cpu);
|
||||
struct desc_struct gdt;
|
||||
|
||||
pack_descriptor(&gdt[GDT_ENTRY_PERCPU],
|
||||
__per_cpu_offset[cpu], 0xFFFFF,
|
||||
pack_descriptor(&gdt, __per_cpu_offset[cpu], 0xFFFFF,
|
||||
0x2 | DESCTYPE_S, 0x8);
|
||||
gdt.s = 1;
|
||||
|
||||
gdt[GDT_ENTRY_PERCPU].s = 1;
|
||||
write_gdt_entry(get_cpu_gdt_table(cpu),
|
||||
GDT_ENTRY_PERCPU, &gdt, DESCTYPE_S);
|
||||
|
||||
per_cpu(this_cpu_off, cpu) = __per_cpu_offset[cpu];
|
||||
per_cpu(cpu_number, cpu) = cpu;
|
||||
|
||||
@ -1131,7 +1131,14 @@ asmlinkage void math_state_restore(void)
|
||||
}
|
||||
|
||||
clts(); /* Allow maths ops (or we recurse) */
|
||||
restore_fpu_checking(&me->thread.xstate->fxsave);
|
||||
/*
|
||||
* Paranoid restore. send a SIGSEGV if we fail to restore the state.
|
||||
*/
|
||||
if (unlikely(restore_fpu_checking(&me->thread.xstate->fxsave))) {
|
||||
stts();
|
||||
force_sig(SIGSEGV, me);
|
||||
return;
|
||||
}
|
||||
task_thread_info(me)->status |= TS_USEDFPU;
|
||||
me->fpu_counter++;
|
||||
}
|
||||
|
||||
@ -184,8 +184,6 @@ static int __init visws_get_smp_config(unsigned int early)
|
||||
return 1;
|
||||
}
|
||||
|
||||
extern unsigned int __cpuinitdata maxcpus;
|
||||
|
||||
/*
|
||||
* The Visual Workstation is Intel MP compliant in the hardware
|
||||
* sense, but it doesn't have a BIOS(-configuration table).
|
||||
@ -244,8 +242,8 @@ static int __init visws_find_smp_config(unsigned int reserve)
|
||||
ncpus = CO_CPU_MAX;
|
||||
}
|
||||
|
||||
if (ncpus > maxcpus)
|
||||
ncpus = maxcpus;
|
||||
if (ncpus > setup_max_cpus)
|
||||
ncpus = setup_max_cpus;
|
||||
|
||||
#ifdef CONFIG_X86_LOCAL_APIC
|
||||
smp_found_config = 1;
|
||||
|
||||
@ -60,7 +60,7 @@ static unsigned long dma_reserve __initdata;
|
||||
|
||||
DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
|
||||
|
||||
int direct_gbpages __meminitdata
|
||||
int direct_gbpages
|
||||
#ifdef CONFIG_DIRECT_GBPAGES
|
||||
= 1
|
||||
#endif
|
||||
@ -88,7 +88,11 @@ early_param("gbpages", parse_direct_gbpages_on);
|
||||
|
||||
int after_bootmem;
|
||||
|
||||
static __init void *spp_getpage(void)
|
||||
/*
|
||||
* NOTE: This function is marked __ref because it calls __init function
|
||||
* (alloc_bootmem_pages). It's safe to do it ONLY when after_bootmem == 0.
|
||||
*/
|
||||
static __ref void *spp_getpage(void)
|
||||
{
|
||||
void *ptr;
|
||||
|
||||
@ -314,6 +318,7 @@ phys_pmd_init(pmd_t *pmd_page, unsigned long address, unsigned long end,
|
||||
{
|
||||
unsigned long pages = 0;
|
||||
unsigned long last_map_addr = end;
|
||||
unsigned long start = address;
|
||||
|
||||
int i = pmd_index(address);
|
||||
|
||||
@ -334,6 +339,9 @@ phys_pmd_init(pmd_t *pmd_page, unsigned long address, unsigned long end,
|
||||
if (!pmd_large(*pmd))
|
||||
last_map_addr = phys_pte_update(pmd, address,
|
||||
end);
|
||||
/* Count entries we're using from level2_ident_pgt */
|
||||
if (start == 0)
|
||||
pages++;
|
||||
continue;
|
||||
}
|
||||
|
||||
|
||||
@ -221,8 +221,7 @@ static int pageattr_test(void)
|
||||
failed += print_split(&sc);
|
||||
|
||||
if (failed) {
|
||||
printk(KERN_ERR "NOT PASSED. Please report.\n");
|
||||
WARN_ON(1);
|
||||
WARN(1, KERN_ERR "NOT PASSED. Please report.\n");
|
||||
return -EINVAL;
|
||||
} else {
|
||||
if (print)
|
||||
|
||||
@ -55,13 +55,19 @@ static void split_page_count(int level)
|
||||
|
||||
int arch_report_meminfo(char *page)
|
||||
{
|
||||
int n = sprintf(page, "DirectMap4k: %8lu\n"
|
||||
"DirectMap2M: %8lu\n",
|
||||
direct_pages_count[PG_LEVEL_4K],
|
||||
direct_pages_count[PG_LEVEL_2M]);
|
||||
int n = sprintf(page, "DirectMap4k: %8lu kB\n",
|
||||
direct_pages_count[PG_LEVEL_4K] << 2);
|
||||
#if defined(CONFIG_X86_64) || defined(CONFIG_X86_PAE)
|
||||
n += sprintf(page + n, "DirectMap2M: %8lu kB\n",
|
||||
direct_pages_count[PG_LEVEL_2M] << 11);
|
||||
#else
|
||||
n += sprintf(page + n, "DirectMap4M: %8lu kB\n",
|
||||
direct_pages_count[PG_LEVEL_2M] << 12);
|
||||
#endif
|
||||
#ifdef CONFIG_X86_64
|
||||
n += sprintf(page + n, "DirectMap1G: %8lu\n",
|
||||
direct_pages_count[PG_LEVEL_1G]);
|
||||
if (direct_gbpages)
|
||||
n += sprintf(page + n, "DirectMap1G: %8lu kB\n",
|
||||
direct_pages_count[PG_LEVEL_1G] << 20);
|
||||
#endif
|
||||
return n;
|
||||
}
|
||||
@ -592,10 +598,9 @@ repeat:
|
||||
if (!pte_val(old_pte)) {
|
||||
if (!primary)
|
||||
return 0;
|
||||
printk(KERN_WARNING "CPA: called for zero pte. "
|
||||
WARN(1, KERN_WARNING "CPA: called for zero pte. "
|
||||
"vaddr = %lx cpa->vaddr = %lx\n", address,
|
||||
cpa->vaddr);
|
||||
WARN_ON(1);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
|
||||
@ -178,7 +178,7 @@ void acpi_numa_arch_fixup(void)
|
||||
* start of the node, and that the current "end" address is after
|
||||
* the previous one.
|
||||
*/
|
||||
static __init void node_read_chunk(int nid, struct node_memory_chunk_s *memory_chunk)
|
||||
static __init int node_read_chunk(int nid, struct node_memory_chunk_s *memory_chunk)
|
||||
{
|
||||
/*
|
||||
* Only add present memory as told by the e820.
|
||||
@ -189,10 +189,10 @@ static __init void node_read_chunk(int nid, struct node_memory_chunk_s *memory_c
|
||||
if (memory_chunk->start_pfn >= max_pfn) {
|
||||
printk(KERN_INFO "Ignoring SRAT pfns: %08lx - %08lx\n",
|
||||
memory_chunk->start_pfn, memory_chunk->end_pfn);
|
||||
return;
|
||||
return -1;
|
||||
}
|
||||
if (memory_chunk->nid != nid)
|
||||
return;
|
||||
return -1;
|
||||
|
||||
if (!node_has_online_mem(nid))
|
||||
node_start_pfn[nid] = memory_chunk->start_pfn;
|
||||
@ -202,6 +202,8 @@ static __init void node_read_chunk(int nid, struct node_memory_chunk_s *memory_c
|
||||
|
||||
if (node_end_pfn[nid] < memory_chunk->end_pfn)
|
||||
node_end_pfn[nid] = memory_chunk->end_pfn;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int __init get_memcfg_from_srat(void)
|
||||
@ -259,7 +261,9 @@ int __init get_memcfg_from_srat(void)
|
||||
printk(KERN_DEBUG
|
||||
"chunk %d nid %d start_pfn %08lx end_pfn %08lx\n",
|
||||
j, chunk->nid, chunk->start_pfn, chunk->end_pfn);
|
||||
node_read_chunk(chunk->nid, chunk);
|
||||
if (node_read_chunk(chunk->nid, chunk))
|
||||
continue;
|
||||
|
||||
e820_register_active_regions(chunk->nid, chunk->start_pfn,
|
||||
min(chunk->end_pfn, max_pfn));
|
||||
}
|
||||
|
||||
@ -365,7 +365,7 @@ static void __init pci_mmcfg_reject_broken(int early)
|
||||
return;
|
||||
|
||||
reject:
|
||||
printk(KERN_ERR "PCI: Not using MMCONFIG.\n");
|
||||
printk(KERN_INFO "PCI: Not using MMCONFIG.\n");
|
||||
pci_mmcfg_arch_free();
|
||||
kfree(pci_mmcfg_config);
|
||||
pci_mmcfg_config = NULL;
|
||||
|
||||
@ -31,9 +31,6 @@
|
||||
#define ALIAS_TABLE_ENTRY_SIZE 2
|
||||
#define RLOOKUP_TABLE_ENTRY_SIZE (sizeof(void *))
|
||||
|
||||
/* helper macros */
|
||||
#define LOW_U32(x) ((x) & ((1ULL << 32)-1))
|
||||
|
||||
/* Length of the MMIO region for the AMD IOMMU */
|
||||
#define MMIO_REGION_LENGTH 0x4000
|
||||
|
||||
@ -69,6 +66,9 @@
|
||||
#define MMIO_EVT_TAIL_OFFSET 0x2018
|
||||
#define MMIO_STATUS_OFFSET 0x2020
|
||||
|
||||
/* MMIO status bits */
|
||||
#define MMIO_STATUS_COM_WAIT_INT_MASK 0x04
|
||||
|
||||
/* feature control bits */
|
||||
#define CONTROL_IOMMU_EN 0x00ULL
|
||||
#define CONTROL_HT_TUN_EN 0x01ULL
|
||||
@ -89,6 +89,7 @@
|
||||
#define CMD_INV_IOMMU_PAGES 0x03
|
||||
|
||||
#define CMD_COMPL_WAIT_STORE_MASK 0x01
|
||||
#define CMD_COMPL_WAIT_INT_MASK 0x02
|
||||
#define CMD_INV_IOMMU_PAGES_SIZE_MASK 0x01
|
||||
#define CMD_INV_IOMMU_PAGES_PDE_MASK 0x02
|
||||
|
||||
@ -99,6 +100,7 @@
|
||||
#define DEV_ENTRY_TRANSLATION 0x01
|
||||
#define DEV_ENTRY_IR 0x3d
|
||||
#define DEV_ENTRY_IW 0x3e
|
||||
#define DEV_ENTRY_NO_PAGE_FAULT 0x62
|
||||
#define DEV_ENTRY_EX 0x67
|
||||
#define DEV_ENTRY_SYSMGT1 0x68
|
||||
#define DEV_ENTRY_SYSMGT2 0x69
|
||||
|
||||
@ -50,6 +50,7 @@ extern int geode_get_dev_base(unsigned int dev);
|
||||
#define MSR_PIC_YSEL_HIGH 0x51400021
|
||||
#define MSR_PIC_ZSEL_LOW 0x51400022
|
||||
#define MSR_PIC_ZSEL_HIGH 0x51400023
|
||||
#define MSR_PIC_IRQM_LPC 0x51400025
|
||||
|
||||
#define MSR_MFGPT_IRQ 0x51400028
|
||||
#define MSR_MFGPT_NR 0x51400029
|
||||
@ -237,7 +238,7 @@ static inline u16 geode_mfgpt_read(int timer, u16 reg)
|
||||
}
|
||||
|
||||
extern int geode_mfgpt_toggle_event(int timer, int cmp, int event, int enable);
|
||||
extern int geode_mfgpt_set_irq(int timer, int cmp, int irq, int enable);
|
||||
extern int geode_mfgpt_set_irq(int timer, int cmp, int *irq, int enable);
|
||||
extern int geode_mfgpt_alloc_timer(int timer, int domain);
|
||||
|
||||
#define geode_mfgpt_setup_irq(t, c, i) geode_mfgpt_set_irq((t), (c), (i), 1)
|
||||
|
||||
@ -63,8 +63,6 @@ static inline int restore_fpu_checking(struct i387_fxsave_struct *fx)
|
||||
#else
|
||||
: [fx] "cdaSDb" (fx), "m" (*fx), "0" (0));
|
||||
#endif
|
||||
if (unlikely(err))
|
||||
init_fpu(current);
|
||||
return err;
|
||||
}
|
||||
|
||||
|
||||
@ -21,7 +21,7 @@ extern void __iomem *fix_ioremap(unsigned idx, unsigned long phys);
|
||||
|
||||
#define build_mmio_read(name, size, type, reg, barrier) \
|
||||
static inline type name(const volatile void __iomem *addr) \
|
||||
{ type ret; asm volatile("mov" size " %1,%0":"=" reg (ret) \
|
||||
{ type ret; asm volatile("mov" size " %1,%0":reg (ret) \
|
||||
:"m" (*(volatile type __force *)addr) barrier); return ret; }
|
||||
|
||||
#define build_mmio_write(name, size, type, reg, barrier) \
|
||||
@ -29,13 +29,13 @@ static inline void name(type val, volatile void __iomem *addr) \
|
||||
{ asm volatile("mov" size " %0,%1": :reg (val), \
|
||||
"m" (*(volatile type __force *)addr) barrier); }
|
||||
|
||||
build_mmio_read(readb, "b", unsigned char, "q", :"memory")
|
||||
build_mmio_read(readw, "w", unsigned short, "r", :"memory")
|
||||
build_mmio_read(readl, "l", unsigned int, "r", :"memory")
|
||||
build_mmio_read(readb, "b", unsigned char, "=q", :"memory")
|
||||
build_mmio_read(readw, "w", unsigned short, "=r", :"memory")
|
||||
build_mmio_read(readl, "l", unsigned int, "=r", :"memory")
|
||||
|
||||
build_mmio_read(__readb, "b", unsigned char, "q", )
|
||||
build_mmio_read(__readw, "w", unsigned short, "r", )
|
||||
build_mmio_read(__readl, "l", unsigned int, "r", )
|
||||
build_mmio_read(__readb, "b", unsigned char, "=q", )
|
||||
build_mmio_read(__readw, "w", unsigned short, "=r", )
|
||||
build_mmio_read(__readl, "l", unsigned int, "=r", )
|
||||
|
||||
build_mmio_write(writeb, "b", unsigned char, "q", :"memory")
|
||||
build_mmio_write(writew, "w", unsigned short, "r", :"memory")
|
||||
@ -59,8 +59,8 @@ build_mmio_write(__writel, "l", unsigned int, "r", )
|
||||
#define mmiowb() barrier()
|
||||
|
||||
#ifdef CONFIG_X86_64
|
||||
build_mmio_read(readq, "q", unsigned long, "r", :"memory")
|
||||
build_mmio_read(__readq, "q", unsigned long, "r", )
|
||||
build_mmio_read(readq, "q", unsigned long, "=r", :"memory")
|
||||
build_mmio_read(__readq, "q", unsigned long, "=r", )
|
||||
build_mmio_write(writeq, "q", unsigned long, "r", :"memory")
|
||||
build_mmio_write(__writeq, "q", unsigned long, "r", )
|
||||
|
||||
|
||||
@ -97,10 +97,16 @@ static inline int pfn_valid(int pfn)
|
||||
reserve_bootmem_node(NODE_DATA(0), (addr), (size), (flags))
|
||||
#define alloc_bootmem(x) \
|
||||
__alloc_bootmem_node(NODE_DATA(0), (x), SMP_CACHE_BYTES, __pa(MAX_DMA_ADDRESS))
|
||||
#define alloc_bootmem_nopanic(x) \
|
||||
__alloc_bootmem_node_nopanic(NODE_DATA(0), (x), SMP_CACHE_BYTES, \
|
||||
__pa(MAX_DMA_ADDRESS))
|
||||
#define alloc_bootmem_low(x) \
|
||||
__alloc_bootmem_node(NODE_DATA(0), (x), SMP_CACHE_BYTES, 0)
|
||||
#define alloc_bootmem_pages(x) \
|
||||
__alloc_bootmem_node(NODE_DATA(0), (x), PAGE_SIZE, __pa(MAX_DMA_ADDRESS))
|
||||
#define alloc_bootmem_pages_nopanic(x) \
|
||||
__alloc_bootmem_node_nopanic(NODE_DATA(0), (x), PAGE_SIZE, \
|
||||
__pa(MAX_DMA_ADDRESS))
|
||||
#define alloc_bootmem_low_pages(x) \
|
||||
__alloc_bootmem_node(NODE_DATA(0), (x), PAGE_SIZE, 0)
|
||||
#define alloc_bootmem_node(pgdat, x) \
|
||||
|
||||
@ -151,7 +151,7 @@ static inline void native_pgd_clear(pgd_t *pgd)
|
||||
#define VMALLOC_END _AC(0xffffe1ffffffffff, UL)
|
||||
#define VMEMMAP_START _AC(0xffffe20000000000, UL)
|
||||
#define MODULES_VADDR _AC(0xffffffffa0000000, UL)
|
||||
#define MODULES_END _AC(0xfffffffffff00000, UL)
|
||||
#define MODULES_END _AC(0xffffffffff000000, UL)
|
||||
#define MODULES_LEN (MODULES_END - MODULES_VADDR)
|
||||
|
||||
#ifndef __ASSEMBLY__
|
||||
|
||||
@ -728,6 +728,29 @@ extern unsigned long boot_option_idle_override;
|
||||
extern unsigned long idle_halt;
|
||||
extern unsigned long idle_nomwait;
|
||||
|
||||
/*
|
||||
* on systems with caches, caches must be flashed as the absolute
|
||||
* last instruction before going into a suspended halt. Otherwise,
|
||||
* dirty data can linger in the cache and become stale on resume,
|
||||
* leading to strange errors.
|
||||
*
|
||||
* perform a variety of operations to guarantee that the compiler
|
||||
* will not reorder instructions. wbinvd itself is serializing
|
||||
* so the processor will not reorder.
|
||||
*
|
||||
* Systems without cache can just go into halt.
|
||||
*/
|
||||
static inline void wbinvd_halt(void)
|
||||
{
|
||||
mb();
|
||||
/* check for clflush to determine if wbinvd is legal */
|
||||
if (cpu_has_clflush)
|
||||
asm volatile("cli; wbinvd; 1: hlt; jmp 1b" : : : "memory");
|
||||
else
|
||||
while (1)
|
||||
halt();
|
||||
}
|
||||
|
||||
extern void enable_sep_cpu(void);
|
||||
extern int sysenter_setup(void);
|
||||
|
||||
|
||||
@ -65,7 +65,7 @@ static inline int __ticket_spin_is_contended(raw_spinlock_t *lock)
|
||||
{
|
||||
int tmp = ACCESS_ONCE(lock->slock);
|
||||
|
||||
return (((tmp >> 8) & 0xff) - (tmp & 0xff)) > 1;
|
||||
return (((tmp >> 8) - tmp) & 0xff) > 1;
|
||||
}
|
||||
|
||||
static __always_inline void __ticket_spin_lock(raw_spinlock_t *lock)
|
||||
@ -127,7 +127,7 @@ static inline int __ticket_spin_is_contended(raw_spinlock_t *lock)
|
||||
{
|
||||
int tmp = ACCESS_ONCE(lock->slock);
|
||||
|
||||
return (((tmp >> 16) & 0xffff) - (tmp & 0xffff)) > 1;
|
||||
return (((tmp >> 16) - tmp) & 0xffff) > 1;
|
||||
}
|
||||
|
||||
static __always_inline void __ticket_spin_lock(raw_spinlock_t *lock)
|
||||
|
||||
Loading…
Reference in New Issue
Block a user