https://github.com/torvalds/linux
Revision ea5f95c3d6bb117abfe41fd2612f3213cf22b609 authored by Ram Pai on 04 June 2020, 23:52:01 UTC, committed by Linus Torvalds on 05 June 2020, 02:06:27 UTC
In some cases, a pkey's bits need not necessarily change in a way that the value of the pkey register increases when performing a pkey_disable_set() or decreases when performing a pkey_disable_clear(). For example, on powerpc, if a pkey's current state is PKEY_DISABLE_ACCESS and we perform a pkey_write_disable() on it, the bits still remain the same. We will observe something similar when the pkey's current state is 0 and a pkey_access_enable() is performed on it. Either case would cause some assertions to fail. This fixes the problem. Signed-off-by: Ram Pai <linuxram@us.ibm.com> Signed-off-by: Sandipan Das <sandipan@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Dave Hansen <dave.hansen@intel.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Florian Weimer <fweimer@redhat.com> Cc: "Desnes A. Nunes do Rosario" <desnesn@linux.vnet.ibm.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Thiago Jung Bauermann <bauerman@linux.ibm.com> Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Hocko <mhocko@kernel.org> Cc: Michal Suchanek <msuchanek@suse.de> Cc: Shuah Khan <shuah@kernel.org> Link: http://lkml.kernel.org/r/8240665131e43fc93eed4eea8194676c1ea39a7f.1585646528.git.sandipan@linux.ibm.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 parent 1155180
Tip revision: ea5f95c3d6bb117abfe41fd2612f3213cf22b609 authored by Ram Pai on 04 June 2020, 23:52:01 UTC
selftests/vm/pkeys: fix assertion in pkey_disable_set/clear()
selftests/vm/pkeys: fix assertion in pkey_disable_set/clear()
Tip revision: ea5f95c
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kernel | ||
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net | ||
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.cocciconfig | -rw-r--r-- | 59 bytes |
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COPYING | -rw-r--r-- | 496 bytes |
CREDITS | -rw-r--r-- | 97.4 KB |
Kbuild | -rw-r--r-- | 1.3 KB |
Kconfig | -rw-r--r-- | 595 bytes |
MAINTAINERS | -rw-r--r-- | 543.3 KB |
Makefile | -rw-r--r-- | 60.4 KB |
README | -rw-r--r-- | 727 bytes |
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