On Thu, May 15, 2025 at 12:54 AM Michael Kelley <mhkli...@outlook.com> wrote: > > From: Tianyu Lan <ltyker...@gmail.com> Sent: Tuesday, May 6, 2025 6:07 AM > > > > For the patch Subject, use: > > x86/hyperv: Don't use auto-EOI when Secure AVIC is available > > > Hyper-V doesn't support auto-eoi with Secure AVIC. > > So Enable HV_DEPRECATING_AEOI_RECOMMENDED flag > > s/Enable/enable/ > > to force to write eoi register after handling interrupt. > > "to force writing the EOI register after handling an interrupt." > > > > > Signed-off-by: Tianyu Lan <ti...@microsoft.com> > > --- > > 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 3e2533954675..fbe45b5e9790 100644 > > --- a/arch/x86/kernel/cpu/mshyperv.c > > +++ b/arch/x86/kernel/cpu/mshyperv.c > > @@ -463,6 +463,9 @@ 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; > > + > > Shouldn't Hyper-V already be setting this flag if it is offering Secure AVIC > to guests? I guess it doesn't hurt to do this in the Linux code, but it seems > like it should be Hyper-V's responsibility. >
OK. I will double check from OpenHCL side. -- Thanks Tianyu Lan
