linux

iv/linux

History

Greg Edwards d471bd853d KVM: x86: Allow APICv APIC ID inhibit to be cleared

Legacy kernels prior to commit 4399c03c6780 ("x86/apic: Remove
verify_local_APIC()") write the APIC ID of the boot CPU twice to verify
a functioning local APIC.  This results in APIC acceleration inhibited
on these kernels for reason APICV_INHIBIT_REASON_APIC_ID_MODIFIED.

Allow the APICV_INHIBIT_REASON_APIC_ID_MODIFIED inhibit reason to be
cleared if/when all APICs in xAPIC mode set their APIC ID back to the
expected vcpu_id value.

Fold the functionality previously in kvm_lapic_xapic_id_updated() into
kvm_recalculate_apic_map(), as this allows examining all APICs in one
pass.

Fixes: 3743c2f02517 ("KVM: x86: inhibit APICv/AVIC on changes to APIC ID or APIC base")
Signed-off-by: Greg Edwards <gedwards@ddn.com>
Link: https://lore.kernel.org/r/20221117183247.94314-1-gedwards@ddn.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20230106011306.85230-33-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

2023-01-13 10:45:35 -05:00

alpha

asm-generic: arch/alpha regression fix for 6.1

2022-10-14 13:47:42 -07:00

arc

ARC: mm: fix leakage of memory allocated for PTE

2022-10-17 16:32:12 -07:00

arm

ARM: dts: ux500: Add trips to battery thermal zones

2022-11-01 12:21:17 +01:00

arm64

KVM/arm64 updates for 6.2