From: chenjiajun chenjiajun8@huawei.com
virt inclusion category: feature bugzilla: bugzilla: https://gitee.com/openeuler/kernel/issues/I8TN8N CVE: NA
This patch export remaining aarch64 exit items to vcpu_stat via debugfs. The items include: fp_asimd_exit_stat, irq_exit_stat, sys64_exit_stat, mabt_exit_stat, fail_entry_exit_stat, internal_error_exit_stat, unknown_ec_exit_stat, cp15_32_exit_stat, cp15_64_exit_stat, cp14_mr_exit_stat, cp14_ls_exit_stat, cp14_64_exit_stat, smc_exit_stat, sve_exit_stat, debug_exit_stat
Signed-off-by: Biaoxiang Ye yebiaoxiang@huawei.com Signed-off-by: Zengruan Ye yezengruan@huawei.com Signed-off-by: chenjiajun chenjiajun8@huawei.com Reviewed-by: Xiangyou Xie xiexiangyou@huawei.com Acked-by: Xie XiuQi xiexiuqi@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com
Signed-off-by: lishusen lishusen2@huawei.com --- C | 0 arch/arm64/include/asm/kvm_host.h | 15 +++++++++++++++ arch/arm64/kvm/handle_exit.c | 9 +++++++++ arch/arm64/kvm/hyp/include/hyp/switch.h | 1 + arch/arm64/kvm/mmu.c | 1 + arch/arm64/kvm/sys_regs.c | 11 +++++++++++ 6 files changed, 37 insertions(+) create mode 100644 C
diff --git a/C b/C new file mode 100644 index 000000000000..e69de29bb2d1 diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h index e9bf556f206f..41bb0610176c 100644 --- a/arch/arm64/include/asm/kvm_host.h +++ b/arch/arm64/include/asm/kvm_host.h @@ -918,6 +918,21 @@ struct kvm_vcpu_stat { u64 mmio_exit_kernel; u64 signal_exits; u64 exits; + u64 fp_asimd_exit_stat; + u64 irq_exit_stat; + u64 sys64_exit_stat; + u64 mabt_exit_stat; + u64 fail_entry_exit_stat; + u64 internal_error_exit_stat; + u64 unknown_ec_exit_stat; + u64 cp15_32_exit_stat; + u64 cp15_64_exit_stat; + u64 cp14_mr_exit_stat; + u64 cp14_ls_exit_stat; + u64 cp14_64_exit_stat; + u64 smc_exit_stat; + u64 sve_exit_stat; + u64 debug_exit_stat; };
unsigned long kvm_arm_num_regs(struct kvm_vcpu *vcpu); diff --git a/arch/arm64/kvm/handle_exit.c b/arch/arm64/kvm/handle_exit.c index 617ae6dea5d5..299cc9d7226b 100644 --- a/arch/arm64/kvm/handle_exit.c +++ b/arch/arm64/kvm/handle_exit.c @@ -73,6 +73,7 @@ static int handle_smc(struct kvm_vcpu *vcpu) */ if (kvm_vcpu_hvc_get_imm(vcpu)) { vcpu_set_reg(vcpu, 0, ~0UL); + vcpu->stat.smc_exit_stat++; return 1; }
@@ -173,6 +174,8 @@ static int kvm_handle_guest_debug(struct kvm_vcpu *vcpu) run->debug.arch.hsr_high = upper_32_bits(esr); run->flags = KVM_DEBUG_ARCH_HSR_HIGH_VALID;
+ vcpu->stat.debug_exit_stat++; + switch (ESR_ELx_EC(esr)) { case ESR_ELx_EC_WATCHPT_LOW: run->debug.arch.far = vcpu->arch.fault.far_el2; @@ -193,6 +196,7 @@ static int kvm_handle_unknown_ec(struct kvm_vcpu *vcpu) esr, esr_get_class_string(esr));
kvm_inject_undefined(vcpu); + vcpu->stat.unknown_ec_exit_stat++; return 1; }
@@ -203,6 +207,7 @@ static int kvm_handle_unknown_ec(struct kvm_vcpu *vcpu) static int handle_sve(struct kvm_vcpu *vcpu) { kvm_inject_undefined(vcpu); + vcpu->stat.sve_exit_stat++; return 1; }
@@ -335,6 +340,7 @@ int handle_exit(struct kvm_vcpu *vcpu, int exception_index)
switch (exception_index) { case ARM_EXCEPTION_IRQ: + vcpu->stat.irq_exit_stat++; return 1; case ARM_EXCEPTION_EL1_SERROR: return 1; @@ -346,6 +352,7 @@ int handle_exit(struct kvm_vcpu *vcpu, int exception_index) * is pre-emptied by kvm_reboot()'s shutdown call. */ run->exit_reason = KVM_EXIT_FAIL_ENTRY; + vcpu->stat.fail_entry_exit_stat++; return 0; case ARM_EXCEPTION_IL: /* @@ -353,11 +360,13 @@ int handle_exit(struct kvm_vcpu *vcpu, int exception_index) * have been corrupted somehow. Give up. */ run->exit_reason = KVM_EXIT_FAIL_ENTRY; + vcpu->stat.fail_entry_exit_stat++; return -EINVAL; default: kvm_pr_unimpl("Unsupported exception type: %d", exception_index); run->exit_reason = KVM_EXIT_INTERNAL_ERROR; + vcpu->stat.internal_error_exit_stat++; return 0; } } diff --git a/arch/arm64/kvm/hyp/include/hyp/switch.h b/arch/arm64/kvm/hyp/include/hyp/switch.h index 9cfe6bd1dbe4..c91e641346d6 100644 --- a/arch/arm64/kvm/hyp/include/hyp/switch.h +++ b/arch/arm64/kvm/hyp/include/hyp/switch.h @@ -294,6 +294,7 @@ static bool kvm_hyp_handle_fpsimd(struct kvm_vcpu *vcpu, u64 *exit_code) /* Only handle traps the vCPU can support here: */ switch (esr_ec) { case ESR_ELx_EC_FP_ASIMD: + vcpu->stat.fp_asimd_exit_stat++; break; case ESR_ELx_EC_SVE: if (!sve_guest) diff --git a/arch/arm64/kvm/mmu.c b/arch/arm64/kvm/mmu.c index 482280fe22d7..121a3d90240d 100644 --- a/arch/arm64/kvm/mmu.c +++ b/arch/arm64/kvm/mmu.c @@ -1416,6 +1416,7 @@ static int user_mem_abort(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa, write_fault = kvm_is_write_fault(vcpu); exec_fault = kvm_vcpu_trap_is_exec_fault(vcpu); VM_BUG_ON(write_fault && exec_fault); + vcpu->stat.mabt_exit_stat++;
if (fault_status == ESR_ELx_FSC_PERM && !write_fault && !exec_fault) { kvm_err("Unexpected L2 read permission error\n"); diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c index 0afd6136e275..8a92e848a1e6 100644 --- a/arch/arm64/kvm/sys_regs.c +++ b/arch/arm64/kvm/sys_regs.c @@ -2774,6 +2774,8 @@ static bool check_sysreg_table(const struct sys_reg_desc *table, unsigned int n, int kvm_handle_cp14_load_store(struct kvm_vcpu *vcpu) { kvm_inject_undefined(vcpu); + vcpu->stat.cp14_ls_exit_stat++; + return 1; }
@@ -3050,6 +3052,8 @@ static int kvm_handle_cp_32(struct kvm_vcpu *vcpu,
int kvm_handle_cp15_64(struct kvm_vcpu *vcpu) { + vcpu->stat.cp15_64_exit_stat++; + return kvm_handle_cp_64(vcpu, cp15_64_regs, ARRAY_SIZE(cp15_64_regs)); }
@@ -3059,6 +3063,8 @@ int kvm_handle_cp15_32(struct kvm_vcpu *vcpu)
params = esr_cp1x_32_to_params(kvm_vcpu_get_esr(vcpu));
+ vcpu->stat.cp15_32_exit_stat++; + /* * Certain AArch32 ID registers are handled by rerouting to the AArch64 * system register table. Registers in the ID range where CRm=0 are @@ -3073,6 +3079,8 @@ int kvm_handle_cp15_32(struct kvm_vcpu *vcpu)
int kvm_handle_cp14_64(struct kvm_vcpu *vcpu) { + vcpu->stat.cp14_64_exit_stat++; + return kvm_handle_cp_64(vcpu, cp14_64_regs, ARRAY_SIZE(cp14_64_regs)); }
@@ -3082,6 +3090,8 @@ int kvm_handle_cp14_32(struct kvm_vcpu *vcpu)
params = esr_cp1x_32_to_params(kvm_vcpu_get_esr(vcpu));
+ vcpu->stat.cp14_mr_exit_stat++; + return kvm_handle_cp_32(vcpu, ¶ms, cp14_regs, ARRAY_SIZE(cp14_regs)); }
@@ -3178,6 +3188,7 @@ int kvm_handle_sys_reg(struct kvm_vcpu *vcpu) int Rt = kvm_vcpu_sys_get_rt(vcpu);
trace_kvm_handle_sys_reg(esr); + vcpu->stat.sys64_exit_stat++;
if (__check_nv_sr_forward(vcpu)) return 1;