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| author | Russell King <rmk+kernel@armlinux.org.uk> | 2016-05-13 13:40:20 +0300 |
|---|---|---|
| committer | Russell King <rmk+kernel@armlinux.org.uk> | 2016-07-07 18:01:01 +0300 |
| commit | e6978e4bf181fb3b5f8cb6f71b4fe30fbf1b655c (patch) | |
| tree | dddb20dbc9a5e594e406e71ed598039b33e0a4be /arch/arm/kernel/asm-offsets.c | |
| parent | dd665be0e243873343a28e18f9f345927b658daf (diff) | |
| download | linux-e6978e4bf181fb3b5f8cb6f71b4fe30fbf1b655c.tar.xz | |
ARM: save and reset the address limit when entering an exception
When we enter an exception, the current address limit should not apply
to the exception context: if the exception context wishes to access
kernel space via the user accessors (eg, perf code), it must explicitly
request such access.
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Diffstat (limited to 'arch/arm/kernel/asm-offsets.c')
| -rw-r--r-- | arch/arm/kernel/asm-offsets.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm/kernel/asm-offsets.c b/arch/arm/kernel/asm-offsets.c index 9a8ce342cd82..608008229c7d 100644 --- a/arch/arm/kernel/asm-offsets.c +++ b/arch/arm/kernel/asm-offsets.c @@ -109,6 +109,7 @@ int main(void) DEFINE(S_OLD_R0, offsetof(struct pt_regs, ARM_ORIG_r0)); DEFINE(PT_REGS_SIZE, sizeof(struct pt_regs)); DEFINE(SVC_DACR, offsetof(struct svc_pt_regs, dacr)); + DEFINE(SVC_ADDR_LIMIT, offsetof(struct svc_pt_regs, addr_limit)); DEFINE(SVC_REGS_SIZE, sizeof(struct svc_pt_regs)); BLANK(); #ifdef CONFIG_CACHE_L2X0 |