[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] [xen master] tools/insn-fuzz: Provide IA32_DEBUGCTL consistently to the emulator
commit 9e9b56fe8aab1f9376acdbbac575b97b7a4e8df9 Author: Andrew Cooper <andrew.cooper3@xxxxxxxxxx> AuthorDate: Mon Mar 27 10:37:35 2017 +0100 Commit: Andrew Cooper <andrew.cooper3@xxxxxxxxxx> CommitDate: Thu Apr 6 18:42:49 2017 +0100 tools/insn-fuzz: Provide IA32_DEBUGCTL consistently to the emulator x86_emulates()'s is_branch_step() performs a speculative read of IA32_DEBUGCTL, but doesn't squash exceptions should they arise. In reality, this MSR is always available. Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx> Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx> --- tools/fuzz/x86_instruction_emulator/fuzz-emul.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/tools/fuzz/x86_instruction_emulator/fuzz-emul.c b/tools/fuzz/x86_instruction_emulator/fuzz-emul.c index 10501d9..9544aa4 100644 --- a/tools/fuzz/x86_instruction_emulator/fuzz-emul.c +++ b/tools/fuzz/x86_instruction_emulator/fuzz-emul.c @@ -402,7 +402,8 @@ enum { MSRI_STAR, MSRI_LSTAR, MSRI_CSTAR, - MSRI_SYSCALL_MASK + MSRI_SYSCALL_MASK, + MSRI_IA32_DEBUGCTLMSR, }; static const unsigned int msr_index[MSR_INDEX_MAX] = { @@ -413,7 +414,8 @@ static const unsigned int msr_index[MSR_INDEX_MAX] = { [MSRI_STAR] = MSR_STAR, [MSRI_LSTAR] = MSR_LSTAR, [MSRI_CSTAR] = MSR_CSTAR, - [MSRI_SYSCALL_MASK] = MSR_SYSCALL_MASK + [MSRI_SYSCALL_MASK] = MSR_SYSCALL_MASK, + [MSRI_IA32_DEBUGCTLMSR] = MSR_IA32_DEBUGCTLMSR, }; static int fuzz_read_msr( -- generated by git-patchbot for /home/xen/git/xen.git#master _______________________________________________ Xen-changelog mailing list Xen-changelog@xxxxxxxxxxxxx https://lists.xenproject.org/xen-changelog
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