Re: [PATCH RFCv2 5/9] kvm/arm64: Replace hsr with esr
From: Gavin Shan
Date: Tue May 26 2020 - 22:56:48 EST
Hi Mark,
On 5/26/20 8:45 PM, Mark Rutland wrote:
On Fri, May 08, 2020 at 01:29:15PM +1000, Gavin Shan wrote:
This replace the variable names to make them self-explaining. The
tracepoint isn't changed accordingly because they're part of ABI:
* @hsr to @esr
* @hsr_ec to @ec
* Use kvm_vcpu_trap_get_class() helper if possible
Signed-off-by: Gavin Shan <gshan@xxxxxxxxxx>
As with patch 3, I think this cleanup makes sense independent from the
rest of the series, and I think it'd make sense to bundle all the
patches renaming hsr -> esr, and send those as a preparatory series.
Yes, PATCH[3/4/5] will be posted independently, as part of the
preparatory work, as you suggested.
Thanks,
Gavin
Thanks,
Mark.
---
arch/arm64/kvm/handle_exit.c | 28 ++++++++++++++--------------
arch/arm64/kvm/hyp/switch.c | 9 ++++-----
arch/arm64/kvm/sys_regs.c | 30 +++++++++++++++---------------
3 files changed, 33 insertions(+), 34 deletions(-)
diff --git a/arch/arm64/kvm/handle_exit.c b/arch/arm64/kvm/handle_exit.c
index 00858db82a64..e3b3dcd5b811 100644
--- a/arch/arm64/kvm/handle_exit.c
+++ b/arch/arm64/kvm/handle_exit.c
@@ -123,13 +123,13 @@ static int kvm_handle_wfx(struct kvm_vcpu *vcpu, struct kvm_run *run)
*/
static int kvm_handle_guest_debug(struct kvm_vcpu *vcpu, struct kvm_run *run)
{
- u32 hsr = kvm_vcpu_get_esr(vcpu);
+ u32 esr = kvm_vcpu_get_esr(vcpu);
int ret = 0;
run->exit_reason = KVM_EXIT_DEBUG;
- run->debug.arch.hsr = hsr;
+ run->debug.arch.hsr = esr;
- switch (ESR_ELx_EC(hsr)) {
+ switch (kvm_vcpu_trap_get_class(esr)) {
case ESR_ELx_EC_WATCHPT_LOW:
run->debug.arch.far = vcpu->arch.fault.far_el2;
/* fall through */
@@ -139,8 +139,8 @@ static int kvm_handle_guest_debug(struct kvm_vcpu *vcpu, struct kvm_run *run)
case ESR_ELx_EC_BRK64:
break;
default:
- kvm_err("%s: un-handled case hsr: %#08x\n",
- __func__, (unsigned int) hsr);
+ kvm_err("%s: un-handled case esr: %#08x\n",
+ __func__, (unsigned int)esr);
ret = -1;
break;
}
@@ -150,10 +150,10 @@ static int kvm_handle_guest_debug(struct kvm_vcpu *vcpu, struct kvm_run *run)
static int kvm_handle_unknown_ec(struct kvm_vcpu *vcpu, struct kvm_run *run)
{
- u32 hsr = kvm_vcpu_get_esr(vcpu);
+ u32 esr = kvm_vcpu_get_esr(vcpu);
- kvm_pr_unimpl("Unknown exception class: hsr: %#08x -- %s\n",
- hsr, esr_get_class_string(hsr));
+ kvm_pr_unimpl("Unknown exception class: esr: %#08x -- %s\n",
+ esr, esr_get_class_string(esr));
kvm_inject_undefined(vcpu);
return 1;
@@ -230,10 +230,10 @@ static exit_handle_fn arm_exit_handlers[] = {
static exit_handle_fn kvm_get_exit_handler(struct kvm_vcpu *vcpu)
{
- u32 hsr = kvm_vcpu_get_esr(vcpu);
- u8 hsr_ec = ESR_ELx_EC(hsr);
+ u32 esr = kvm_vcpu_get_esr(vcpu);
+ u8 ec = kvm_vcpu_trap_get_class(esr);
- return arm_exit_handlers[hsr_ec];
+ return arm_exit_handlers[ec];
}
/*
@@ -273,15 +273,15 @@ int handle_exit(struct kvm_vcpu *vcpu, struct kvm_run *run,
{
if (ARM_SERROR_PENDING(exception_index)) {
u32 esr = kvm_vcpu_get_esr(vcpu);
- u8 hsr_ec = ESR_ELx_EC(esr);
+ u8 ec = kvm_vcpu_trap_get_class(esr);
/*
* HVC/SMC already have an adjusted PC, which we need
* to correct in order to return to after having
* injected the SError.
*/
- if (hsr_ec == ESR_ELx_EC_HVC32 || hsr_ec == ESR_ELx_EC_HVC64 ||
- hsr_ec == ESR_ELx_EC_SMC32 || hsr_ec == ESR_ELx_EC_SMC64) {
+ if (ec == ESR_ELx_EC_HVC32 || ec == ESR_ELx_EC_HVC64 ||
+ ec == ESR_ELx_EC_SMC32 || ec == ESR_ELx_EC_SMC64) {
u32 adj = kvm_vcpu_trap_il_is32bit(esr) ? 4 : 2;
*vcpu_pc(vcpu) -= adj;
}
diff --git a/arch/arm64/kvm/hyp/switch.c b/arch/arm64/kvm/hyp/switch.c
index 369f22f49f3d..7bf4840bf90e 100644
--- a/arch/arm64/kvm/hyp/switch.c
+++ b/arch/arm64/kvm/hyp/switch.c
@@ -356,8 +356,8 @@ static bool __hyp_text __populate_fault_info(struct kvm_vcpu *vcpu)
static bool __hyp_text __hyp_handle_fpsimd(struct kvm_vcpu *vcpu)
{
u32 esr = kvm_vcpu_get_esr(vcpu);
+ u8 ec = kvm_vcpu_trap_get_class(esr);
bool vhe, sve_guest, sve_host;
- u8 hsr_ec;
if (!system_supports_fpsimd())
return false;
@@ -372,14 +372,13 @@ static bool __hyp_text __hyp_handle_fpsimd(struct kvm_vcpu *vcpu)
vhe = has_vhe();
}
- hsr_ec = kvm_vcpu_trap_get_class(esr);
- if (hsr_ec != ESR_ELx_EC_FP_ASIMD &&
- hsr_ec != ESR_ELx_EC_SVE)
+ if (ec != ESR_ELx_EC_FP_ASIMD &&
+ ec != ESR_ELx_EC_SVE)
return false;
/* Don't handle SVE traps for non-SVE vcpus here: */
if (!sve_guest)
- if (hsr_ec != ESR_ELx_EC_FP_ASIMD)
+ if (ec != ESR_ELx_EC_FP_ASIMD)
return false;
/* Valid trap. Switch the context: */
diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c
index 012fff834a4b..58f81ab519af 100644
--- a/arch/arm64/kvm/sys_regs.c
+++ b/arch/arm64/kvm/sys_regs.c
@@ -2182,10 +2182,10 @@ static void unhandled_cp_access(struct kvm_vcpu *vcpu,
struct sys_reg_params *params)
{
u32 esr = kvm_vcpu_get_esr(vcpu);
- u8 hsr_ec = kvm_vcpu_trap_get_class(esr);
+ u8 ec = kvm_vcpu_trap_get_class(esr);
int cp = -1;
- switch(hsr_ec) {
+ switch (ec) {
case ESR_ELx_EC_CP15_32:
case ESR_ELx_EC_CP15_64:
cp = 15;
@@ -2216,17 +2216,17 @@ static int kvm_handle_cp_64(struct kvm_vcpu *vcpu,
size_t nr_specific)
{
struct sys_reg_params params;
- u32 hsr = kvm_vcpu_get_esr(vcpu);
- int Rt = kvm_vcpu_sys_get_rt(hsr);
- int Rt2 = (hsr >> 10) & 0x1f;
+ u32 esr = kvm_vcpu_get_esr(vcpu);
+ int Rt = kvm_vcpu_sys_get_rt(esr);
+ int Rt2 = (esr >> 10) & 0x1f;
params.is_aarch32 = true;
params.is_32bit = false;
- params.CRm = (hsr >> 1) & 0xf;
- params.is_write = ((hsr & 1) == 0);
+ params.CRm = (esr >> 1) & 0xf;
+ params.is_write = ((esr & 1) == 0);
params.Op0 = 0;
- params.Op1 = (hsr >> 16) & 0xf;
+ params.Op1 = (esr >> 16) & 0xf;
params.Op2 = 0;
params.CRn = 0;
@@ -2273,18 +2273,18 @@ static int kvm_handle_cp_32(struct kvm_vcpu *vcpu,
size_t nr_specific)
{
struct sys_reg_params params;
- u32 hsr = kvm_vcpu_get_esr(vcpu);
- int Rt = kvm_vcpu_sys_get_rt(hsr);
+ u32 esr = kvm_vcpu_get_esr(vcpu);
+ int Rt = kvm_vcpu_sys_get_rt(esr);
params.is_aarch32 = true;
params.is_32bit = true;
- params.CRm = (hsr >> 1) & 0xf;
+ params.CRm = (esr >> 1) & 0xf;
params.regval = vcpu_get_reg(vcpu, Rt);
- params.is_write = ((hsr & 1) == 0);
- params.CRn = (hsr >> 10) & 0xf;
+ params.is_write = ((esr & 1) == 0);
+ params.CRn = (esr >> 10) & 0xf;
params.Op0 = 0;
- params.Op1 = (hsr >> 14) & 0x7;
- params.Op2 = (hsr >> 17) & 0x7;
+ params.Op1 = (esr >> 14) & 0x7;
+ params.Op2 = (esr >> 17) & 0x7;
if (!emulate_cp(vcpu, ¶ms, target_specific, nr_specific) ||
!emulate_cp(vcpu, ¶ms, global, nr_global)) {
--
2.23.0