Re: [PATCH Part1 RFC v4 05/36] x86/sev: Define the Linux specific guest termination reasons
From: Borislav Petkov <bp@alien8.de>
Date: 2021-08-10 11:33:02
Also in:
kvm, linux-crypto, linux-efi, linux-mm, lkml, platform-driver-x86
On Wed, Jul 07, 2021 at 01:14:35PM -0500, Brijesh Singh wrote:
quoted hunk ↗ jump to hunk
diff --git a/arch/x86/include/asm/sev-common.h b/arch/x86/include/asm/sev-common.h index 23929a3010df..e75e29c05f59 100644 --- a/arch/x86/include/asm/sev-common.h +++ b/arch/x86/include/asm/sev-common.h@@ -63,9 +63,17 @@ (((((u64)reason_set) & GHCB_MSR_TERM_REASON_SET_MASK) << GHCB_MSR_TERM_REASON_SET_POS) | \ ((((u64)reason_val) & GHCB_MSR_TERM_REASON_MASK) << GHCB_MSR_TERM_REASON_POS)) +/* Error code from reason set 0 */
... Error codes...
+#define SEV_TERM_SET_GEN 0 #define GHCB_SEV_ES_GEN_REQ 0 #define GHCB_SEV_ES_PROT_UNSUPPORTED 1 #define GHCB_RESP_CODE(v) ((v) & GHCB_MSR_INFO_MASK) +/* Linux specific reason codes (used with reason set 1) */
... Linux-specific ...
+#define SEV_TERM_SET_LINUX 1
GHCB doc says: "This document defines and owns reason code set 0x0" Should it also say, reason code set 1 is allocated for Linux guest use? I don't see why not... Tom?
+#define GHCB_TERM_REGISTER 0 /* GHCB GPA registration failure */ +#define GHCB_TERM_PSC 1 /* Page State Change failure */ +#define GHCB_TERM_PVALIDATE 2 /* Pvalidate failure */ + #endif
--
Regards/Gruss,
Boris.
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