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authorPeter Zijlstra <peterz@infradead.org>2021-11-10 13:01:17 +0300
committerPeter Zijlstra <peterz@infradead.org>2021-12-11 11:09:49 +0300
commit3e8ea7803a1dedf19120a2fef12c590e90e4b469 (patch)
treed86c7c76ff6f4b4ca0c39352c059259d8f250d00 /tools/perf/scripts/python/stackcollapse.py
parentc9a34c3f4ece192f6d804039fe6aac9618f0d236 (diff)
downloadlinux-3e8ea7803a1dedf19120a2fef12c590e90e4b469.tar.xz
x86/vmx: Remove .fixup usage
In the vmread exceptin path, use the, thus far, unused output register to push the @fault argument onto the stack. This, in turn, enables the exception handler to not do pushes and only modify that register when an exception does occur. As noted by Sean the input constraint needs to be changed to "=&r" to avoid the value and field occupying the same register. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Josh Poimboeuf <jpoimboe@redhat.com> Link: https://lore.kernel.org/r/20211110101325.781308550@infradead.org
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