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Subject[PATCH] KVM: arm64: add esr_el2 and far_el2 to sysreg
Date
For the firmware-first RAS solution, SEA and SEI is injected
by the user space, user space needs to know the esr_el2 and
far_el2's value, so add them to sysreg. user space uses
the IOCTL KVM_GET_ONE_REG can get their value.

Signed-off-by: Dongjiu Geng <gengdongjiu@huawei.com>
Signed-off-by: Quanming Wu <wuquanming@huawei.com>
---
arch/arm64/include/asm/kvm_host.h | 6 ++++--
arch/arm64/kvm/sys_regs.c | 6 ++++++
2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h
index b6242fb..6063eec 100644
--- a/arch/arm64/include/asm/kvm_host.h
+++ b/arch/arm64/include/asm/kvm_host.h
@@ -103,10 +103,12 @@ enum vcpu_sysreg {
TTBR0_EL1, /* Translation Table Base Register 0 */
TTBR1_EL1, /* Translation Table Base Register 1 */
TCR_EL1, /* Translation Control Register */
- ESR_EL1, /* Exception Syndrome Register */
+ ESR_EL1, /* Exception Syndrome Register for EL1 */
+ ESR_EL2, /* Exception Syndrome Register for EL2 */
AFSR0_EL1, /* Auxiliary Fault Status Register 0 */
AFSR1_EL1, /* Auxiliary Fault Status Register 1 */
- FAR_EL1, /* Fault Address Register */
+ FAR_EL1, /* Fault Address Register for EL1 */
+ FAR_EL2, /* Fault Address Register for EL2 */
MAIR_EL1, /* Memory Attribute Indirection Register */
VBAR_EL1, /* Vector Base Address Register */
CONTEXTIDR_EL1, /* Context ID Register */
diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c
index 0e26f8c..0c286bf 100644
--- a/arch/arm64/kvm/sys_regs.c
+++ b/arch/arm64/kvm/sys_regs.c
@@ -987,9 +987,15 @@ static const struct sys_reg_desc sys_reg_descs[] = {
/* ESR_EL1 */
{ Op0(0b11), Op1(0b000), CRn(0b0101), CRm(0b0010), Op2(0b000),
access_vm_reg, reset_unknown, ESR_EL1 },
+ /* ESR_EL2 */
+ { Op0(0b11), Op1(0b100), CRn(0b0101), CRm(0b0010), Op2(0b000),
+ access_vm_reg, reset_unknown, ESR_EL2 },
/* FAR_EL1 */
{ Op0(0b11), Op1(0b000), CRn(0b0110), CRm(0b0000), Op2(0b000),
access_vm_reg, reset_unknown, FAR_EL1 },
+ /* FAR_EL2 */
+ { Op0(0b11), Op1(0b100), CRn(0b0110), CRm(0b0000), Op2(0b000),
+ access_vm_reg, reset_unknown, FAR_EL2 },
/* PAR_EL1 */
{ Op0(0b11), Op1(0b000), CRn(0b0111), CRm(0b0100), Op2(0b000),
NULL, reset_unknown, PAR_EL1 },
--
2.10.1
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