Messages in this thread | | | Date | Mon, 20 Dec 2021 11:53:43 +0700 | Subject | Re: [PATCH v3 0/3] svm: avic: Allow AVIC support on system w/ physical APIC ID > 255 | From | Suravee Suthikulpanit <> |
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Are there any other concerns with this series?
Regards, Suravee
On 12/13/21 6:31 PM, Suravee Suthikulpanit wrote: > Originally, AMD SVM AVIC supports 8-bit host physical APIC ID. > However, newer AMD systems can have physical APIC ID larger than 255, > and AVIC hardware has been extended to support upto the maximum physical > APIC ID available in the system. > > This series introduces a helper function in the APIC subsystem to get > the maximum physical APIC ID allowing the SVM AVIC driver to calculate > the number of bits to program the host physical APIC ID in the AVIC > physical APIC ID table entry. > > Regards, > Suravee Suthikulpanit > > Changes from V2 (https://www.spinics.net/lists/kvm/msg261351.html) > > * Use global variable npt_enabled instead (patch 1/3) > > * Use BIT_ULL() instead of BIT() since avic_host_physical_id_mask > is 64-bit value (patch 3/3) > > Suravee Suthikulpanit (3): > KVM: SVM: Refactor AVIC hardware setup logic into helper function > x86/apic: Add helper function to get maximum physical APIC ID > KVM: SVM: Extend host physical APIC ID field to support more than > 8-bit > > arch/x86/include/asm/apic.h | 1 + > arch/x86/kernel/apic/apic.c | 6 ++++++ > arch/x86/kvm/svm/avic.c | 38 +++++++++++++++++++++++++++++-------- > arch/x86/kvm/svm/svm.c | 8 +------- > arch/x86/kvm/svm/svm.h | 2 +- > 5 files changed, 39 insertions(+), 16 deletions(-) >
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