Re: [PATCH Part1 RFC v4 10/36] x86/compressed: Register GHCB memory when SEV-SNP is active
From: Borislav Petkov <bp@alien8.de>
Date: 2021-08-13 10:47:11
Also in:
linux-coco, linux-crypto, linux-efi, linux-mm, lkml, platform-driver-x86
On Wed, Jul 07, 2021 at 01:14:40PM -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 aee07d1bb138..b19d8d301f5d 100644 --- a/arch/x86/include/asm/sev-common.h +++ b/arch/x86/include/asm/sev-common.h@@ -45,6 +45,17 @@ (((unsigned long)reg & GHCB_MSR_CPUID_REG_MASK) << GHCB_MSR_CPUID_REG_POS) | \ (((unsigned long)fn) << GHCB_MSR_CPUID_FUNC_POS)) +/* GHCB GPA Register */ +#define GHCB_MSR_GPA_REG_REQ 0x012 +#define GHCB_MSR_GPA_REG_VALUE_POS 12 +#define GHCB_MSR_GPA_REG_GFN_MASK GENMASK_ULL(51, 0) +#define GHCB_MSR_GPA_REQ_GFN_VAL(v) \ + (((unsigned long)((v) & GHCB_MSR_GPA_REG_GFN_MASK) << GHCB_MSR_GPA_REG_VALUE_POS)| \ + GHCB_MSR_GPA_REG_REQ) + +#define GHCB_MSR_GPA_REG_RESP 0x013 +#define GHCB_MSR_GPA_REG_RESP_VAL(v) ((v) >> GHCB_MSR_GPA_REG_VALUE_POS)
Simplify...
--
Regards/Gruss,
Boris.
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