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Merge remote-tracking branch 'qemu-kvm/uq/master' into staging

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# By Jan Kiszka (1) and others
# Via Gleb Natapov
* qemu-kvm/uq/master:
  kvm: Fix uninitialized cpuid_data
  pci-assign: Remove dead code for direct I/O region access from userspace
  KVM: x86: fix typo in KVM_GET_XCRS

Message-id: cover.1385040432.git.gleb@redhat.com
Signed-off-by: Anthony Liguori <aliguori@amazon.com>
This commit is contained in:
Anthony Liguori 2013-11-21 07:09:52 -08:00
commit 0a3c738507
2 changed files with 14 additions and 55 deletions
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56
hw/i386/kvm/pci-assign.c
View File

@ -154,55 +154,19 @@ static uint64_t assigned_dev_ioport_rw(AssignedDevRegion *dev_region,
uint64_t val = 0;
int fd = dev_region->region->resource_fd;
if (fd >= 0) {
if (data) {
DEBUG("pwrite data=%" PRIx64 ", size=%d, e_phys=" TARGET_FMT_plx
", addr="TARGET_FMT_plx"\n", *data, size, addr, addr);
if (pwrite(fd, data, size, addr) != size) {
error_report("%s - pwrite failed %s",
__func__, strerror(errno));
}
} else {
if (pread(fd, &val, size, addr) != size) {
error_report("%s - pread failed %s",
__func__, strerror(errno));
val = (1UL << (size * 8)) - 1;
}
DEBUG("pread val=%" PRIx64 ", size=%d, e_phys=" TARGET_FMT_plx
", addr=" TARGET_FMT_plx "\n", val, size, addr, addr);
if (data) {
DEBUG("pwrite data=%" PRIx64 ", size=%d, e_phys=" TARGET_FMT_plx
", addr="TARGET_FMT_plx"\n", *data, size, addr, addr);
if (pwrite(fd, data, size, addr) != size) {
error_report("%s - pwrite failed %s", __func__, strerror(errno));
}
} else {
uint32_t port = addr + dev_region->u.r_baseport;
if (data) {
DEBUG("out data=%" PRIx64 ", size=%d, e_phys=" TARGET_FMT_plx
", host=%x\n", *data, size, addr, port);
switch (size) {
case 1:
outb(*data, port);
break;
case 2:
outw(*data, port);
break;
case 4:
outl(*data, port);
break;
}
} else {
switch (size) {
case 1:
val = inb(port);
break;
case 2:
val = inw(port);
break;
case 4:
val = inl(port);
break;
}
DEBUG("in data=%" PRIx64 ", size=%d, e_phys=" TARGET_FMT_plx
", host=%x\n", val, size, addr, port);
if (pread(fd, &val, size, addr) != size) {
error_report("%s - pread failed %s", __func__, strerror(errno));
val = (1UL << (size * 8)) - 1;
}
DEBUG("pread val=%" PRIx64 ", size=%d, e_phys=" TARGET_FMT_plx
", addr=" TARGET_FMT_plx "\n", val, size, addr, addr);
}
return val;
}

13
target-i386/kvm.c
View File

@ -456,11 +456,12 @@ int kvm_arch_init_vcpu(CPUState *cs)
uint32_t signature[3];
int r;
memset(&cpuid_data, 0, sizeof(cpuid_data));
cpuid_i = 0;
/* Paravirtualization CPUIDs */
c = &cpuid_data.entries[cpuid_i++];
memset(c, 0, sizeof(*c));
c->function = KVM_CPUID_SIGNATURE;
if (!hyperv_enabled(cpu)) {
memcpy(signature, "KVMKVMKVM\0\0\0", 12);
@ -474,7 +475,6 @@ int kvm_arch_init_vcpu(CPUState *cs)
c->edx = signature[2];
c = &cpuid_data.entries[cpuid_i++];
memset(c, 0, sizeof(*c));
c->function = KVM_CPUID_FEATURES;
c->eax = env->features[FEAT_KVM];
@ -483,13 +483,11 @@ int kvm_arch_init_vcpu(CPUState *cs)
c->eax = signature[0];
c = &cpuid_data.entries[cpuid_i++];
memset(c, 0, sizeof(*c));
c->function = HYPERV_CPUID_VERSION;
c->eax = 0x00001bbc;
c->ebx = 0x00060001;
c = &cpuid_data.entries[cpuid_i++];
memset(c, 0, sizeof(*c));
c->function = HYPERV_CPUID_FEATURES;
if (cpu->hyperv_relaxed_timing) {
c->eax |= HV_X64_MSR_HYPERCALL_AVAILABLE;
@ -500,7 +498,6 @@ int kvm_arch_init_vcpu(CPUState *cs)
}
c = &cpuid_data.entries[cpuid_i++];
memset(c, 0, sizeof(*c));
c->function = HYPERV_CPUID_ENLIGHTMENT_INFO;
if (cpu->hyperv_relaxed_timing) {
c->eax |= HV_X64_RELAXED_TIMING_RECOMMENDED;
@ -511,13 +508,11 @@ int kvm_arch_init_vcpu(CPUState *cs)
c->ebx = cpu->hyperv_spinlock_attempts;
c = &cpuid_data.entries[cpuid_i++];
memset(c, 0, sizeof(*c));
c->function = HYPERV_CPUID_IMPLEMENT_LIMITS;
c->eax = 0x40;
c->ebx = 0x40;
c = &cpuid_data.entries[cpuid_i++];
memset(c, 0, sizeof(*c));
c->function = KVM_CPUID_SIGNATURE_NEXT;
memcpy(signature, "KVMKVMKVM\0\0\0", 12);
c->eax = 0;
@ -1314,8 +1309,8 @@ static int kvm_get_xcrs(X86CPU *cpu)
for (i = 0; i < xcrs.nr_xcrs; i++) {
/* Only support xcr0 now */
if (xcrs.xcrs[0].xcr == 0) {
env->xcr0 = xcrs.xcrs[0].value;
if (xcrs.xcrs[i].xcr == 0) {
env->xcr0 = xcrs.xcrs[i].value;
break;
}
}