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author | Linus Torvalds <torvalds@linux-foundation.org> | 2019-05-06 15:56:41 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-05-06 15:56:41 -0700 |
commit | 8f147727030bf9e81331ab9b8f42d4611bb6a3d9 (patch) | |
tree | d3f1e2410174bb8c479590a8f1c7e204e3a48eaf /arch/x86/kernel/asm-offsets_64.c | |
parent | Merge branch 'x86-entry-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip (diff) | |
parent | x86/irq: Fix outdated comments (diff) | |
download | linux-dev-8f147727030bf9e81331ab9b8f42d4611bb6a3d9.tar.xz linux-dev-8f147727030bf9e81331ab9b8f42d4611bb6a3d9.zip |
Merge branch 'x86-irq-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 irq updates from Ingo Molnar:
"Here are the main changes in this tree:
- Introduce x86-64 IRQ/exception/debug stack guard pages to detect
stack overflows immediately and deterministically.
- Clean up over a decade worth of cruft accumulated.
The outcome of this should be more clear-cut faults/crashes when any
of the low level x86 CPU stacks overflow, instead of silent memory
corruption and sporadic failures much later on"
* 'x86-irq-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (33 commits)
x86/irq: Fix outdated comments
x86/irq/64: Remove stack overflow debug code
x86/irq/64: Remap the IRQ stack with guard pages
x86/irq/64: Split the IRQ stack into its own pages
x86/irq/64: Init hardirq_stack_ptr during CPU hotplug
x86/irq/32: Handle irq stack allocation failure proper
x86/irq/32: Invoke irq_ctx_init() from init_IRQ()
x86/irq/64: Rename irq_stack_ptr to hardirq_stack_ptr
x86/irq/32: Rename hard/softirq_stack to hard/softirq_stack_ptr
x86/irq/32: Make irq stack a character array
x86/irq/32: Define IRQ_STACK_SIZE
x86/dumpstack/64: Speedup in_exception_stack()
x86/exceptions: Split debug IST stack
x86/exceptions: Enable IST guard pages
x86/exceptions: Disconnect IST index and stack order
x86/cpu: Remove orig_ist array
x86/cpu: Prepare TSS.IST setup for guard pages
x86/dumpstack/64: Use cpu_entry_area instead of orig_ist
x86/irq/64: Use cpu entry area instead of orig_ist
x86/traps: Use cpu_entry_area instead of orig_ist
...
Diffstat (limited to 'arch/x86/kernel/asm-offsets_64.c')
-rw-r--r-- | arch/x86/kernel/asm-offsets_64.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/x86/kernel/asm-offsets_64.c b/arch/x86/kernel/asm-offsets_64.c index ddced33184b5..d3d075226c0a 100644 --- a/arch/x86/kernel/asm-offsets_64.c +++ b/arch/x86/kernel/asm-offsets_64.c @@ -68,10 +68,12 @@ int main(void) #undef ENTRY OFFSET(TSS_ist, tss_struct, x86_tss.ist); + DEFINE(DB_STACK_OFFSET, offsetof(struct cea_exception_stacks, DB_stack) - + offsetof(struct cea_exception_stacks, DB1_stack)); BLANK(); #ifdef CONFIG_STACKPROTECTOR - DEFINE(stack_canary_offset, offsetof(union irq_stack_union, stack_canary)); + DEFINE(stack_canary_offset, offsetof(struct fixed_percpu_data, stack_canary)); BLANK(); #endif |