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x86/hyperv: Don't use auto-eoi when Secure AVIC is available

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Hyper-V doesn't support auto-eoi with Secure AVIC.
So set the HV_DEPRECATING_AEOI_RECOMMENDED flag
to force writing the EOI register after handling an interrupt.

Reviewed-by: Michael Kelley <mhklinux@outlook.com>
Reviewed-by: Neeraj Upadhyay <Neeraj.Upadhyay@amd.com>
Signed-off-by: Tianyu Lan <tiala@microsoft.com>
Signed-off-by: Wei Liu <wei.liu@kernel.org>
This commit is contained in:
Tianyu Lan
2025-09-18 11:00:21 -04:00
committed by Wei Liu
parent 3e1b611515
commit c52c957e41
1 changed files with 3 additions and 0 deletions
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3
arch/x86/kernel/cpu/mshyperv.c
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@@ -470,6 +470,9 @@ static void __init ms_hyperv_init_platform(void)
hv_identify_partition_type();
if (cc_platform_has(CC_ATTR_SNP_SECURE_AVIC))
ms_hyperv.hints |= HV_DEPRECATING_AEOI_RECOMMENDED;
if (ms_hyperv.hints & HV_X64_HYPERV_NESTED) {
hv_nested = true;
pr_info("Hyper-V: running on a nested hypervisor\n");