git: 4c599db71af5 - main - vmm: Let guests enable SMEP/SMAP if the host supports it

[Mark Johnston]

The branch main has been updated by markj:

URL: https://cgit.FreeBSD.org/src/commit/?id=4c599db71af56c28bb0388e73bd0570a3873c0ec

commit 4c599db71af56c28bb0388e73bd0570a3873c0ec
Author:     Mark Johnston <markj at FreeBSD.org>
AuthorDate: 2021-05-26 13:34:52 +0000
Commit:     Mark Johnston <markj at FreeBSD.org>
CommitDate: 2021-05-26 13:34:52 +0000

    vmm: Let guests enable SMEP/SMAP if the host supports it
    
    Reviewed by:    kib, grehan, jhb
    Tested by:      grehan (AMD)
    MFC after:      3 weeks
    Sponsored by:   The FreeBSD Foundation
    Differential Revision:  https://reviews.freebsd.org/D30462
---
 sys/amd64/vmm/x86.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/sys/amd64/vmm/x86.c b/sys/amd64/vmm/x86.c
index a4a9c8203fc5..c43a3c870211 100644
--- a/sys/amd64/vmm/x86.c
+++ b/sys/amd64/vmm/x86.c
@@ -441,10 +441,12 @@ x86_emulate_cpuid(struct vm *vm, int vcpu_id, uint64_t *rax, uint64_t *rbx,
 				 */
 				regs[1] &= (CPUID_STDEXT_FSGSBASE |
 				    CPUID_STDEXT_BMI1 | CPUID_STDEXT_HLE |
-				    CPUID_STDEXT_AVX2 | CPUID_STDEXT_BMI2 |
+				    CPUID_STDEXT_AVX2 | CPUID_STDEXT_SMEP |
+				    CPUID_STDEXT_BMI2 |
 				    CPUID_STDEXT_ERMS | CPUID_STDEXT_RTM |
 				    CPUID_STDEXT_AVX512F |
 				    CPUID_STDEXT_RDSEED |
+				    CPUID_STDEXT_SMAP |
 				    CPUID_STDEXT_AVX512PF |
 				    CPUID_STDEXT_AVX512ER |
 				    CPUID_STDEXT_AVX512CD | CPUID_STDEXT_SHA);