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 <[email protected]> Reviewed-by: Neeraj Upadhyay <[email protected]> Signed-off-by: Tianyu Lan <[email protected]> --- arch/x86/kernel/cpu/mshyperv.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/x86/kernel/cpu/mshyperv.c b/arch/x86/kernel/cpu/mshyperv.c index c78f860419d6..6dd3ae66a646 100644 --- a/arch/x86/kernel/cpu/mshyperv.c +++ b/arch/x86/kernel/cpu/mshyperv.c @@ -464,6 +464,9 @@ 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"); -- 2.25.1
