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authorJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>2009-03-29 19:56:29 -0700
committerJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>2009-05-08 15:51:03 -0700
commit6cac5a924668a56c7ccefc345805f1fe0536a90e (patch)
tree0e15fe317a21ac40244cbf38cdeaa36f4c9837fd /arch/x86/include/asm/traps.h
parent6b2e8523df148c15ea5abf13075026fb8bdb3f86 (diff)
xen/x86-64: fix breakpoints and hardware watchpoints
Native x86-64 uses the IST mechanism to run int3 and debug traps on an alternative stack. Xen does not do this, and so the frames were being misinterpreted by the ptrace code. This change special-cases these two exceptions by using Xen variants which run on the normal kernel stack properly. Impact: avoid crash or bad data when IST trap is invoked under Xen Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Diffstat (limited to 'arch/x86/include/asm/traps.h')
-rw-r--r--arch/x86/include/asm/traps.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/include/asm/traps.h b/arch/x86/include/asm/traps.h
index 0d5342515b86..c44e5002f2ff 100644
--- a/arch/x86/include/asm/traps.h
+++ b/arch/x86/include/asm/traps.h
@@ -13,6 +13,9 @@ asmlinkage void divide_error(void);
asmlinkage void debug(void);
asmlinkage void nmi(void);
asmlinkage void int3(void);
+asmlinkage void xen_debug(void);
+asmlinkage void xen_int3(void);
+asmlinkage void xen_stack_segment(void);
asmlinkage void overflow(void);
asmlinkage void bounds(void);
asmlinkage void invalid_op(void);