• James Hogan's avatar
    MIPS: KVM: Add KScratch registers · 05108709
    James Hogan authored
    Allow up to 6 KVM guest KScratch registers to be enabled and accessed
    via the KVM guest register API and from the guest itself (the fallback
    reading and writing of commpage registers is sufficient for KScratch
    registers to work as expected).
    
    User mode can expose the registers by setting the appropriate bits of
    the guest Config4.KScrExist field. KScratch registers that aren't usable
    won't be writeable via the KVM Ioctl API.
    Signed-off-by: default avatarJames Hogan <james.hogan@imgtec.com>
    Cc: Paolo Bonzini <pbonzini@redhat.com>
    Cc: Radim Krčmář <rkrcmar@redhat.com>
    Cc: Ralf Baechle <ralf@linux-mips.org>
    Cc: linux-mips@linux-mips.org
    Cc: kvm@vger.kernel.org
    Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
    05108709
api.txt 122 KB