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| author | Tianyu Lan <ltykernel@gmail.com> | 2025-09-18 18:00:21 +0300 |
|---|---|---|
| committer | Wei Liu <wei.liu@kernel.org> | 2025-11-15 09:18:14 +0300 |
| commit | c52c957e41e75d3f74157acffc53cefa3089ffa7 (patch) | |
| tree | d450543de76b0792ace5a719eaa767f25f7244e3 | |
| parent | 3e1b611515d286c6725028e17170f7143e5e51fc (diff) | |
| download | linux-c52c957e41e75d3f74157acffc53cefa3089ffa7.tar.xz | |
x86/hyperv: Don't use auto-eoi when Secure AVIC is available
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>
| -rw-r--r-- | arch/x86/kernel/cpu/mshyperv.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/kernel/cpu/mshyperv.c b/arch/x86/kernel/cpu/mshyperv.c index c4febdbcfe4d..217a41b63df3 100644 --- a/arch/x86/kernel/cpu/mshyperv.c +++ b/arch/x86/kernel/cpu/mshyperv.c @@ -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"); |