Alexey Kardashevskiy 7aafac11e3 powerpc/powernv/ioda2: Gracefully fail if too many TCE levels requested ... The IODA2 specification says that a 64 DMA address cannot use top 4 bits (3 are reserved and one is a "TVE select"); bottom page_shift bits cannot be used for multilevel table addressing either. The existing IODA2 table allocation code aligns the minimum TCE table size to PAGE_SIZE so in the case of 64K system pages and 4K IOMMU pages, we have 64-4-12=48 bits. Since 64K page stores 8192 TCEs, i.e. needs 13 bits, the maximum number of levels is 48/13 = 3 so we physically cannot address more and EEH happens on DMA accesses. This adds a check that too many levels were requested. It is still possible to have 5 levels in the case of 4K system page size. Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Acked-by: Gavin Shan <gwshan@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>		2017-03-09 19:07:12 +11:00
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alpha	sched/headers: Move task->mm handling methods to <linux/sched/mm.h>	2017-03-03 01:43:28 +01:00
arc	sched/headers: Move task->mm handling methods to <linux/sched/mm.h>	2017-03-03 01:43:28 +01:00
arm	Merge branch 'stable/for-linus-4.11' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb	2017-03-07 10:23:17 -08:00
arm64	ARM: SoC: late DT updates for v4.11	2017-03-03 16:15:48 -08:00
avr32	sched/headers: Prepare to remove the <linux/mm_types.h> dependency from <linux/sched.h>	2017-03-02 08:42:37 +01:00
blackfin	sched/headers: Move task->mm handling methods to <linux/sched/mm.h>	2017-03-03 01:43:28 +01:00
c6x	sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task_stack.h>	2017-03-02 08:42:36 +01:00
cris	sched/headers: Prepare to remove the <linux/mm_types.h> dependency from <linux/sched.h>	2017-03-02 08:42:37 +01:00
frv	sched/headers: Prepare to move 'init_task' and 'init_thread_union' from <linux/sched.h> to <linux/sched/task.h>	2017-03-02 08:42:38 +01:00
h8300	sched/headers: Prepare to remove the <linux/mm_types.h> dependency from <linux/sched.h>	2017-03-02 08:42:37 +01:00
hexagon	sched/headers: Move task->mm handling methods to <linux/sched/mm.h>	2017-03-03 01:43:28 +01:00
ia64	sched/core: Remove unused prefetch_stack()	2017-03-03 01:45:38 +01:00
m32r	sched/headers: Move task->mm handling methods to <linux/sched/mm.h>	2017-03-03 01:43:28 +01:00
m68k	sched/headers: Prepare to remove the <linux/mm_types.h> dependency from <linux/sched.h>	2017-03-02 08:42:37 +01:00
metag	sched/headers: Move task->mm handling methods to <linux/sched/mm.h>	2017-03-03 01:43:28 +01:00
microblaze	sched/headers: Prepare to remove the <linux/mm_types.h> dependency from <linux/sched.h>	2017-03-02 08:42:37 +01:00
mips	sched/headers: Remove the <linux/topology.h> include from <linux/sched.h>	2017-03-03 01:45:41 +01:00
mn10300	sched/headers: Prepare to remove the <linux/mm_types.h> dependency from <linux/sched.h>	2017-03-02 08:42:37 +01:00
nios2	sched/headers: Prepare to move 'init_task' and 'init_thread_union' from <linux/sched.h> to <linux/sched/task.h>	2017-03-02 08:42:38 +01:00
openrisc	sched/headers: Prepare to move kstack_end() from <linux/sched.h> to <linux/sched/task_stack.h>	2017-03-02 08:42:39 +01:00
parisc	Merge branch 'parisc-4.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux	2017-03-03 16:20:06 -08:00
powerpc	powerpc/powernv/ioda2: Gracefully fail if too many TCE levels requested	2017-03-09 19:07:12 +11:00
s390	sched/headers: Move task statistics APIs from <linux/sched.h> to <linux/sched/stat.h>	2017-03-03 01:43:43 +01:00
score	sched/headers: Move task->mm handling methods to <linux/sched/mm.h>	2017-03-03 01:43:28 +01:00
sh	sched/headers: Remove <asm/ptrace.h> from <linux/sched.h>	2017-03-03 01:45:33 +01:00
sparc	sched/headers: Move task->mm handling methods to <linux/sched/mm.h>	2017-03-03 01:43:28 +01:00
tile	sched/headers: Move task->mm handling methods to <linux/sched/mm.h>	2017-03-03 01:43:28 +01:00
um	sched/headers: Prepare to move kstack_end() from <linux/sched.h> to <linux/sched/task_stack.h>	2017-03-02 08:42:39 +01:00
unicore32	sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task_stack.h>	2017-03-02 08:42:36 +01:00
x86	Second batch of KVM changes for 4.11 merge window	2017-03-04 11:36:19 -08:00
xtensa	Xtensa improvements for v4.11:	2017-03-03 16:17:55 -08:00
.gitignore
Kconfig	scripts/spelling.txt: add "an user" pattern and fix typo instances	2017-02-27 18:43:46 -08:00