[PATCH v3 07/11] KVM: arm: add trap handlers for 64-bit debug registers
From: Zhichao Huang <hidden>
Date: 2015-06-22 10:41:30
Also in:
kvm, kvmarm
Subsystem:
arm port, the rest · Maintainers:
Russell King, Linus Torvalds
Add handlers for all the 64-bit debug registers. There is an overlap between 32 and 64bit registers. Make sure that 64-bit registers preceding 32-bit ones. Signed-off-by: Zhichao Huang <redacted> --- arch/arm/kvm/coproc.c | 12 ++++++++++++ 1 file changed, 12 insertions(+)
diff --git a/arch/arm/kvm/coproc.c b/arch/arm/kvm/coproc.c
index 59b65b7..eeee648 100644
--- a/arch/arm/kvm/coproc.c
+++ b/arch/arm/kvm/coproc.c@@ -435,9 +435,17 @@ static const struct coproc_reg cp15_regs[] = { { CRn( 1), CRm((n)), Op1( 0), Op2( 1), is32, trap_raz_wi } /* + * Architected CP14 registers. + * * Trapped cp14 registers. We generally ignore most of the external * debug, on the principle that they don't really make sense to a * guest. Revisit this one day, whould this principle change. + * + * CRn denotes the primary register number, but is copied to the CRm in the + * user space API for 64-bit register access in line with the terminology used + * in the ARM ARM. + * Important: Must be sorted ascending by CRn, CRM, Op1, Op2 and with 64-bit + * registers preceding 32-bit ones. */ static const struct coproc_reg cp14_regs[] = { /* DBGIDR */
@@ -445,10 +453,14 @@ static const struct coproc_reg cp14_regs[] = { /* DBGDTRRXext */ { CRn( 0), CRm( 0), Op1( 0), Op2( 2), is32, trap_raz_wi }, DBG_BCR_BVR_WCR_WVR(0), + /* DBGDRAR (64bit) */ + { CRn( 0), CRm( 1), Op1( 0), Op2( 0), is64, trap_raz_wi}, /* DBGDSCRint */ { CRn( 0), CRm( 1), Op1( 0), Op2( 0), is32, trap_dbgdscr, NULL, cp14_DBGDSCRext }, DBG_BCR_BVR_WCR_WVR(1), + /* DBGDSAR (64bit) */ + { CRn( 0), CRm( 2), Op1( 0), Op2( 0), is64, trap_raz_wi}, /* DBGDSCRext */ { CRn( 0), CRm( 2), Op1( 0), Op2( 2), is32, trap_debug32, reset_val, cp14_DBGDSCRext, 0 },
--
1.7.12.4