Commit bea7e97f authored by Marc Zyngier's avatar Marc Zyngier
Browse files

KVM: arm64: Fix missing RES1 in emulation of DBGBIDR 



The AArch32 CP14 DBGDIDR has bit 15 set to RES1, which our current
emulation doesn't set. Just add the missing bit.

Reported-by: default avatarPeter Maydell <peter.maydell@linaro.org>
Reviewed-by: default avatarEric Auger <eric.auger@redhat.com>
Reviewed-by: default avatarAlexandru Elisei <alexandru.elisei@arm.com>
Signed-off-by: default avatarMarc Zyngier <maz@kernel.org>
parent 5c8fe583

arch/arm64/kvm/sys_regs.c

+1 −1
Original line number Diff line number Diff line
@@ -1711,7 +1711,7 @@ static bool trap_dbgidr(struct kvm_vcpu *vcpu, 
		p->regval = ((((dfr >> ID_AA64DFR0_WRPS_SHIFT) & 0xf) << 28) |

			     (((dfr >> ID_AA64DFR0_BRPS_SHIFT) & 0xf) << 24) |

			     (((dfr >> ID_AA64DFR0_CTX_CMPS_SHIFT) & 0xf) << 20)

			     | (6 << 16) | (el3 << 14) | (el3 << 12));

			     | (6 << 16) | (1 << 15) | (el3 << 14) | (el3 << 12));

		return true;

	}

}