[PATCH v4 15/15] KVM: arm: enable trapping of all debug registers
From: Zhichao Huang <hidden>
Date: 2015-08-10 13:26:07
Also in:
kvm, kvmarm
Subsystem:
arm port, the rest · Maintainers:
Russell King, Linus Torvalds
Enable trapping of the debug registers unconditionally, allowing guests to use the debug infrastructure. Signed-off-by: Zhichao Huang <redacted> Reviewed-by: Christoffer Dall <redacted> --- arch/arm/kvm/interrupts_head.S | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm/kvm/interrupts_head.S b/arch/arm/kvm/interrupts_head.S
index 7ad0adf..494991d 100644
--- a/arch/arm/kvm/interrupts_head.S
+++ b/arch/arm/kvm/interrupts_head.S@@ -792,7 +792,7 @@ ARM_BE8(rev r6, r6 ) * (hardware reset value is 0) */ .macro set_hdcr operation mrc p15, 4, r2, c1, c1, 1 - ldr r3, =(HDCR_TPM|HDCR_TPMCR) + ldr r3, =(HDCR_TPM|HDCR_TPMCR|HDCR_TDRA|HDCR_TDOSA|HDCR_TDA) .if \operation == vmentry orr r2, r2, r3 @ Trap some perfmon accesses .else
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1.7.12.4