diff options
| author | Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com> | 2016-05-04 14:09:46 -0500 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2016-05-18 18:04:28 +0200 |
| commit | 44a95dae1d229a4967bbfcc56fb2116a9b4fe942 (patch) | |
| tree | a4d63ca6d968ca8878b9e6d833c6c0b16f59be39 /arch/x86/include/asm | |
| parent | 3d5615e5342781453633af7107d72afd601b36a7 (diff) | |
| download | blackbird-obmc-linux-44a95dae1d229a4967bbfcc56fb2116a9b4fe942.tar.gz blackbird-obmc-linux-44a95dae1d229a4967bbfcc56fb2116a9b4fe942.zip | |
KVM: x86: Detect and Initialize AVIC support
This patch introduces AVIC-related data structure, and AVIC
initialization code.
There are three main data structures for AVIC:
* Virtual APIC (vAPIC) backing page (per-VCPU)
* Physical APIC ID table (per-VM)
* Logical APIC ID table (per-VM)
Currently, AVIC is disabled by default. Users can manually
enable AVIC via kernel boot option kvm-amd.avic=1 or during
kvm-amd module loading with parameter avic=1.
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
[Avoid extra indentation (Boris). - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/include/asm')
| -rw-r--r-- | arch/x86/include/asm/kvm_host.h | 4 | ||||
| -rw-r--r-- | arch/x86/include/asm/svm.h | 3 |
2 files changed, 7 insertions, 0 deletions
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index 2df5db6fb58b..337e13b0d01d 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -773,6 +773,10 @@ struct kvm_arch { u8 nr_reserved_ioapic_pins; bool disabled_lapic_found; + + /* Struct members for AVIC */ + struct page *avic_logical_id_table_page; + struct page *avic_physical_id_table_page; }; struct kvm_vm_stat { diff --git a/arch/x86/include/asm/svm.h b/arch/x86/include/asm/svm.h index 4711fa4457f3..d0fe23ec7e98 100644 --- a/arch/x86/include/asm/svm.h +++ b/arch/x86/include/asm/svm.h @@ -116,6 +116,9 @@ struct __attribute__ ((__packed__)) vmcb_control_area { #define V_INTR_MASKING_SHIFT 24 #define V_INTR_MASKING_MASK (1 << V_INTR_MASKING_SHIFT) +#define AVIC_ENABLE_SHIFT 31 +#define AVIC_ENABLE_MASK (1 << AVIC_ENABLE_SHIFT) + #define SVM_INTERRUPT_SHADOW_MASK 1 #define SVM_IOIO_STR_SHIFT 2 |
