Searched hist:"6 cac5a92" (Results 1 – 2 of 2) sorted by relevance
| /openbmc/linux/arch/x86/include/asm/ |
| H A D | traps.h | 6cac5a92 Sun Mar 29 21:56:29 CDT 2009 Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> 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>
6cac5a92 Sun Mar 29 21:56:29 CDT 2009 Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> 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>
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| /openbmc/linux/arch/x86/xen/ |
| H A D | enlighten.c | 6cac5a92 Sun Mar 29 21:56:29 CDT 2009 Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> 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>
6cac5a92 Sun Mar 29 21:56:29 CDT 2009 Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> 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>
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