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Sponsored by:	The FreeBSD Foundation
MFC after:	3 days
This commit is contained in:
Konstantin Belousov 2018-05-19 21:36:55 +00:00
parent b97c07ccc1
commit ba6ce3a34b
1 changed files with 2 additions and 2 deletions
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4
sys/x86/x86/cpu_machdep.c
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@ -773,11 +773,11 @@ hw_ibrs_recalculate(void)
if ((cpu_ia32_arch_caps & IA32_ARCH_CAP_IBRS_ALL) != 0) {
if (hw_ibrs_disable) {
v= rdmsr(MSR_IA32_SPEC_CTRL);
v = rdmsr(MSR_IA32_SPEC_CTRL);
v &= ~(uint64_t)IA32_SPEC_CTRL_IBRS;
wrmsr(MSR_IA32_SPEC_CTRL, v);
} else {
v= rdmsr(MSR_IA32_SPEC_CTRL);
v = rdmsr(MSR_IA32_SPEC_CTRL);
v |= IA32_SPEC_CTRL_IBRS;
wrmsr(MSR_IA32_SPEC_CTRL, v);
}