From: Tianyu Lan <[email protected]> Sent: Saturday, July 26, 2025 6:43 AM > > 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. > > Signed-off-by: Tianyu Lan <[email protected]> > --- > Change since RFC V3: > - Update title prefix from "x86/Hyper-V" to "x86/hyperv" > --- > arch/x86/kernel/cpu/mshyperv.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/arch/x86/kernel/cpu/mshyperv.c b/arch/x86/kernel/cpu/mshyperv.c > index c78f860419d6..8f029650f16c 100644 > --- a/arch/x86/kernel/cpu/mshyperv.c > +++ b/arch/x86/kernel/cpu/mshyperv.c > @@ -463,6 +463,8 @@ static void __init ms_hyperv_init_platform(void) > ms_hyperv.max_vp_index, ms_hyperv.max_lp_index); > > 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; > -- > 2.25.1 >
Reviewed-by: Michael Kelley <[email protected]>
