Commit ba2aecab authored by Eric Auger's avatar Eric Auger Committed by Peter Maydell
Browse files

hw/intc/arm_gicv3_its: Implement full reset 



Voiding the ITS caches is not supposed to happen via
individual register writes. So we introduced a dedicated
ITS KVM device ioctl to perform a cold reset of the ITS:
KVM_DEV_ARM_VGIC_GRP_CTRL/KVM_DEV_ARM_ITS_CTRL_RESET. Let's
use this latter if the kernel supports it.

Signed-off-by: default avatarEric Auger <eric.auger@redhat.com>
Reviewed-by: default avatarPeter Maydell <peter.maydell@linaro.org>
Message-id: 1511883692-11511-5-git-send-email-eric.auger@redhat.com
Signed-off-by: default avatarPeter Maydell <peter.maydell@linaro.org>
parent dd873966

hw/intc/arm_gicv3_its_kvm.c

+8 −1
Original line number Diff line number Diff line
@@ -204,7 +204,14 @@ static void kvm_arm_its_reset(DeviceState *dev) 


    c->parent_reset(dev);



    error_report("ITS KVM: full reset is not supported by QEMU");

    if (kvm_device_check_attr(s->dev_fd, KVM_DEV_ARM_VGIC_GRP_CTRL,

                               KVM_DEV_ARM_ITS_CTRL_RESET)) {

        kvm_device_access(s->dev_fd, KVM_DEV_ARM_VGIC_GRP_CTRL,

                          KVM_DEV_ARM_ITS_CTRL_RESET, NULL, true, &error_abort);

        return;

    }



    error_report("ITS KVM: full reset is not supported by the host kernel");



    if (!kvm_device_check_attr(s->dev_fd, KVM_DEV_ARM_VGIC_GRP_ITS_REGS,

                               GITS_CTLR)) {