linux_dsm_epyc7002/arch/x86/mm
H. Peter Anvin 4640c7ee9b x86, smap: smap_violation() is bogus if CONFIG_X86_SMAP is off
If CONFIG_X86_SMAP is disabled, smap_violation() tests for conditions
which are incorrect (as the AC flag doesn't matter), causing spurious
faults.

The dynamic disabling of SMAP (nosmap on the command line) is fine
because it disables X86_FEATURE_SMAP, therefore causing the
static_cpu_has() to return false.

Found by Fengguang Wu's test system.

[ v3: move all predicates into smap_violation() ]
[ v2: use IS_ENABLED() instead of #ifdef ]

Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Link: http://lkml.kernel.org/r/20140213124550.GA30497@localhost
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Cc: <stable@vger.kernel.org> # v3.7+
2014-02-13 08:40:52 -08:00
..
kmemcheck
amdtopology.c
dump_pagetables.c
extable.c
fault.c x86, smap: smap_violation() is bogus if CONFIG_X86_SMAP is off 2014-02-13 08:40:52 -08:00
gup.c mm: dump page when hitting a VM_BUG_ON using VM_BUG_ON_PAGE 2014-01-23 16:36:50 -08:00
highmem_32.c
hugetlbpage.c
init_32.c memblock: make memblock_set_node() support different memblock_type 2014-01-21 16:19:44 -08:00
init_64.c memblock: make memblock_set_node() support different memblock_type 2014-01-21 16:19:44 -08:00
init.c
iomap_32.c
ioremap.c
kmmio.c x86: Delete non-required instances of include <linux/init.h> 2014-01-06 21:25:18 -08:00
Makefile
memtest.c x86/mm: memblock: switch to use NUMA_NO_NODE 2014-01-21 16:19:47 -08:00
mm_internal.h
mmap.c
mmio-mod.c
numa_32.c x86: Fix the initialization of physnode_map 2014-02-01 22:15:51 -08:00
numa_64.c
numa_emulation.c
numa_internal.h
numa.c arch/x86/mm/numa.c: fix array index overflow when synchronizing nid to memblock.reserved. 2014-02-06 13:48:51 -08:00
pageattr-test.c x86: Delete non-required instances of include <linux/init.h> 2014-01-06 21:25:18 -08:00
pageattr.c
pat_internal.h
pat_rbtree.c
pat.c
pf_in.c
pf_in.h
pgtable_32.c
pgtable.c
physaddr.c
physaddr.h
setup_nx.c
srat.c * Avoid WARN_ON() when mapping BGRT on Baytrail (EFI 32-bit). 2014-02-07 11:27:30 -08:00
testmmiotrace.c
tlb.c x86/mm: Eliminate redundant page table walk during TLB range flushing 2014-01-25 09:10:43 +01:00