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x86/hyperv: Add smp support for SEV-SNP guest

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In the AMD SEV-SNP guest, AP needs to be started up via sev es
save area and Hyper-V requires to call HVCALL_START_VP hypercall
to pass the gpa of sev es save area with AP's vp index and VTL(Virtual
trust level) parameters. Override wakeup_secondary_cpu_64 callback
with hv_snp_boot_ap.

Reviewed-by: Dexuan Cui <decui@microsoft.com>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Signed-off-by: Tianyu Lan <tiala@microsoft.com>
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Link: https://lore.kernel.org/r/20230818102919.1318039-8-ltykernel@gmail.com
This commit is contained in:
Tianyu Lan
2023-08-18 06:29:17 -04:00
committed by Wei Liu
parent 45f46b1ac9
commit 44676bb9d5
4 changed files with 157 additions and 1 deletions
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1
include/asm-generic/hyperv-tlfs.h
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@@ -223,6 +223,7 @@ enum HV_GENERIC_SET_FORMAT {
#define HV_STATUS_INVALID_PORT_ID 17
#define HV_STATUS_INVALID_CONNECTION_ID 18
#define HV_STATUS_INSUFFICIENT_BUFFERS 19
#define HV_STATUS_TIME_OUT 120
#define HV_STATUS_VTL_ALREADY_ENABLED 134
/*