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| author | Tom Lendacky <thomas.lendacky@amd.com> | 2020-09-07 16:15:28 +0300 |
|---|---|---|
| committer | Borislav Petkov <bp@suse.de> | 2020-09-07 21:15:51 +0300 |
| commit | a7de15d489d956217b47671705ac2218ca50eaae (patch) | |
| tree | 4869d19c30e8cfb6e52ec88b42cc4a3a58c9ea5b /arch/x86/boot | |
| parent | 1b4fb8545f2b00f2844c4b7619d64d98440a477c (diff) | |
| download | linux-a7de15d489d956217b47671705ac2218ca50eaae.tar.xz | |
x86/sev-es: Add CPUID handling to #VC handler
Handle #VC exceptions caused by CPUID instructions. These happen in
early boot code when the KASLR code checks for RDTSC.
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
[ jroedel@suse.de: Adapt to #VC handling framework ]
Co-developed-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20200907131613.12703-28-joro@8bytes.org
Diffstat (limited to 'arch/x86/boot')
| -rw-r--r-- | arch/x86/boot/compressed/sev-es.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/boot/compressed/sev-es.c b/arch/x86/boot/compressed/sev-es.c index 61504eb1ab46..b1790f487456 100644 --- a/arch/x86/boot/compressed/sev-es.c +++ b/arch/x86/boot/compressed/sev-es.c @@ -16,6 +16,7 @@ #include <asm/trapnr.h> #include <asm/trap_pf.h> #include <asm/msr-index.h> +#include <asm/fpu/xcr.h> #include <asm/ptrace.h> #include <asm/svm.h> @@ -183,6 +184,9 @@ void do_boot_stage2_vc(struct pt_regs *regs, unsigned long exit_code) case SVM_EXIT_IOIO: result = vc_handle_ioio(boot_ghcb, &ctxt); break; + case SVM_EXIT_CPUID: + result = vc_handle_cpuid(boot_ghcb, &ctxt); + break; default: result = ES_UNSUPPORTED; break; |