diff options
| author | Marc Zyngier <marc.zyngier@arm.com> | 2018-02-01 11:07:34 +0000 |
|---|---|---|
| committer | Leonard Crestez <leonard.crestez@nxp.com> | 2018-08-24 12:41:33 +0300 |
| commit | 2faa58a1bb0561c5c7426dd5aecb983c958385a9 (patch) | |
| tree | 6a6ab454c6ca8eb9101d661e452860b54ee35ed4 /arch/arm/mm/fsr-2level.c | |
| parent | 33f7adb3a791346cdf7ee8a98961a4a77ce9c214 (diff) | |
arm: Invalidate BTB on prefetch abort outside of user mapping on Cortex A8, A9, A12 and A17
** Not yet queued for inclusion in mainline **
In order to prevent aliasing attacks on the branch predictor,
invalidate the BTB on CPUs that are known to be affected when taking
a prefetch abort on a address that is outside of a user task limit.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Alex Shi <alex.shi@linaro.org>
Diffstat (limited to 'arch/arm/mm/fsr-2level.c')
| -rw-r--r-- | arch/arm/mm/fsr-2level.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/arm/mm/fsr-2level.c b/arch/arm/mm/fsr-2level.c index 18ca74c0f341..4cede9bc7722 100644 --- a/arch/arm/mm/fsr-2level.c +++ b/arch/arm/mm/fsr-2level.c @@ -50,7 +50,7 @@ static struct fsr_info ifsr_info[] = { { do_bad, SIGBUS, 0, "unknown 4" }, { do_translation_fault, SIGSEGV, SEGV_MAPERR, "section translation fault" }, { do_bad, SIGSEGV, SEGV_ACCERR, "page access flag fault" }, - { do_page_fault, SIGSEGV, SEGV_MAPERR, "page translation fault" }, + { do_pabt_page_fault, SIGSEGV, SEGV_MAPERR, "page translation fault" }, { do_bad, SIGBUS, 0, "external abort on non-linefetch" }, { do_bad, SIGSEGV, SEGV_ACCERR, "section domain fault" }, { do_bad, SIGBUS, 0, "unknown 10" }, @@ -58,7 +58,7 @@ static struct fsr_info ifsr_info[] = { { do_bad, SIGBUS, 0, "external abort on translation" }, { do_sect_fault, SIGSEGV, SEGV_ACCERR, "section permission fault" }, { do_bad, SIGBUS, 0, "external abort on translation" }, - { do_page_fault, SIGSEGV, SEGV_ACCERR, "page permission fault" }, + { do_pabt_page_fault, SIGSEGV, SEGV_ACCERR, "page permission fault" }, { do_bad, SIGBUS, 0, "unknown 16" }, { do_bad, SIGBUS, 0, "unknown 17" }, { do_bad, SIGBUS, 0, "unknown 18" }, |