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| author | Tom Lendacky <thomas.lendacky@amd.com> | 2020-12-10 11:09:39 -0600 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-12-14 11:09:32 -0500 |
| commit | 0f60bde15ee11d03b6143f567cf840d30bf1b588 (patch) | |
| tree | 5216ec386092b86840de83a80531d3f1c710cb1d | |
| parent | 916391a2d1dc225bfb68624352b1495ec529444e (diff) | |
| download | lwn-0f60bde15ee11d03b6143f567cf840d30bf1b588.tar.gz lwn-0f60bde15ee11d03b6143f567cf840d30bf1b588.zip | |
KVM: SVM: Add GHCB accessor functions for retrieving fields
Update the GHCB accessor functions to add functions for retrieve GHCB
fields by name. Update existing code to use the new accessor functions.
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Message-Id: <664172c53a5fb4959914e1a45d88e805649af0ad.1607620209.git.thomas.lendacky@amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
| -rw-r--r-- | arch/x86/include/asm/svm.h | 10 | ||||
| -rw-r--r-- | arch/x86/kernel/cpu/vmware.c | 12 |
2 files changed, 16 insertions, 6 deletions
diff --git a/arch/x86/include/asm/svm.h b/arch/x86/include/asm/svm.h index 71d630bb5e08..1edf24f51b53 100644 --- a/arch/x86/include/asm/svm.h +++ b/arch/x86/include/asm/svm.h @@ -379,6 +379,16 @@ struct vmcb { (unsigned long *)&ghcb->save.valid_bitmap); \ } \ \ + static inline u64 ghcb_get_##field(struct ghcb *ghcb) \ + { \ + return ghcb->save.field; \ + } \ + \ + static inline u64 ghcb_get_##field##_if_valid(struct ghcb *ghcb) \ + { \ + return ghcb_##field##_is_valid(ghcb) ? ghcb->save.field : 0; \ + } \ + \ static inline void ghcb_set_##field(struct ghcb *ghcb, u64 value) \ { \ __set_bit(GHCB_BITMAP_IDX(field), \ diff --git a/arch/x86/kernel/cpu/vmware.c b/arch/x86/kernel/cpu/vmware.c index 924571fe5864..c6ede3b3d302 100644 --- a/arch/x86/kernel/cpu/vmware.c +++ b/arch/x86/kernel/cpu/vmware.c @@ -501,12 +501,12 @@ static bool vmware_sev_es_hcall_finish(struct ghcb *ghcb, struct pt_regs *regs) ghcb_rbp_is_valid(ghcb))) return false; - regs->bx = ghcb->save.rbx; - regs->cx = ghcb->save.rcx; - regs->dx = ghcb->save.rdx; - regs->si = ghcb->save.rsi; - regs->di = ghcb->save.rdi; - regs->bp = ghcb->save.rbp; + regs->bx = ghcb_get_rbx(ghcb); + regs->cx = ghcb_get_rcx(ghcb); + regs->dx = ghcb_get_rdx(ghcb); + regs->si = ghcb_get_rsi(ghcb); + regs->di = ghcb_get_rdi(ghcb); + regs->bp = ghcb_get_rbp(ghcb); return true; } |