Searched hist:f84fcb66568c0b00626f7f03e28db7d0dcba8098 (Results 1 – 2 of 2) sorted by relevance
| /openbmc/linux/arch/x86/include/asm/ |
| H A D | hyperv-tlfs.h | diff f84fcb66568c0b00626f7f03e28db7d0dcba8098 Tue Nov 01 09:53:50 CDT 2022 Vitaly Kuznetsov <vkuznets@redhat.com> KVM: x86: hyper-v: Expose support for extended gva ranges for flush hypercalls
Extended GVA ranges support bit seems to indicate whether lower 12
bits of GVA can be used to specify up to 4095 additional consequent
GVAs to flush. This is somewhat described in TLFS.
Previously, KVM was handling HVCALL_FLUSH_VIRTUAL_ADDRESS_LIST{,EX}
requests by flushing the whole VPID so technically, extended GVA
ranges were already supported. As such requests are handled more
gently now, advertizing support for extended ranges starts making
sense to reduce the size of TLB flush requests.
Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>
Reviewed-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20221101145426.251680-13-vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
|
| /openbmc/linux/arch/x86/kvm/ |
| H A D | hyperv.c | diff f84fcb66568c0b00626f7f03e28db7d0dcba8098 Tue Nov 01 09:53:50 CDT 2022 Vitaly Kuznetsov <vkuznets@redhat.com> KVM: x86: hyper-v: Expose support for extended gva ranges for flush hypercalls
Extended GVA ranges support bit seems to indicate whether lower 12
bits of GVA can be used to specify up to 4095 additional consequent
GVAs to flush. This is somewhat described in TLFS.
Previously, KVM was handling HVCALL_FLUSH_VIRTUAL_ADDRESS_LIST{,EX}
requests by flushing the whole VPID so technically, extended GVA
ranges were already supported. As such requests are handled more
gently now, advertizing support for extended ranges starts making
sense to reduce the size of TLB flush requests.
Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>
Reviewed-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20221101145426.251680-13-vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
|