diff options
| author | Kishon Vijay Abraham I <kvijayab@amd.com> | 2025-08-28 16:41:41 +0530 |
|---|---|---|
| committer | Borislav Petkov (AMD) <bp@alien8.de> | 2025-09-01 12:48:35 +0200 |
| commit | c77683eccf53428a6934df76702e33c0faf46fe5 (patch) | |
| tree | ffcc44d9617502aefa7dc35eee535ea520b9afc3 | |
| parent | ea7d792e11e10f502933c39f3836cb73d35dac36 (diff) | |
x86/sev: Initialize VGIF for secondary vCPUs for Secure AVIC
Virtual GIF (VGIF) provides masking capability for when virtual interrupts
(virtual maskable interrupts, virtual NMIs) can be taken by the guest vCPU.
The Secure AVIC hardware reads VGIF state from the vCPU's VMSA. So, set VGIF for
secondary CPUs (the configuration for the boot CPU is done by the hypervisor),
to unmask delivery of virtual interrupts to the vCPU.
Signed-off-by: Kishon Vijay Abraham I <kvijayab@amd.com>
Signed-off-by: Neeraj Upadhyay <Neeraj.Upadhyay@amd.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Tianyu Lan <tiala@microsoft.com>
Link: https://lore.kernel.org/20250828111141.208920-1-Neeraj.Upadhyay@amd.com
| -rw-r--r-- | arch/x86/coco/sev/core.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/coco/sev/core.c b/arch/x86/coco/sev/core.c index da9fa9d7254b..37b1d41e68d0 100644 --- a/arch/x86/coco/sev/core.c +++ b/arch/x86/coco/sev/core.c @@ -974,6 +974,9 @@ static int wakeup_cpu_via_vmgexit(u32 apic_id, unsigned long start_ip, unsigned vmsa->x87_ftw = AP_INIT_X87_FTW_DEFAULT; vmsa->x87_fcw = AP_INIT_X87_FCW_DEFAULT; + if (cc_platform_has(CC_ATTR_SNP_SECURE_AVIC)) + vmsa->vintr_ctrl |= V_GIF_MASK; + /* SVME must be set. */ vmsa->efer = EFER_SVME; |