b60d6a584c
- target/i386: csv: Release CSV3 shared pages after unmapping DMA - target/i386: Add new CPU model ClearwaterForest - target/i386: add sha512, sm3, sm4 feature bits - docs: Add GNR, SRF and CWF CPU models - target/i386: Export BHI_NO bit to guests - target/i386: Introduce SierraForest-v2 model - vdpa/iommufd:Implement DMA mapping through the iommufd interface - vdpa/iommufd:Introduce vdpa-iommufd module - vdpa/iommufd:support associating iommufd backend for vDPA devices - Kconfig/iommufd/VDPA: Update IOMMUFD module configuration dependencies The vDPA module can also use IOMMUFD like the VFIO module. - backends/iommufd: Get rid of qemu_open_old() - backends/iommufd: Make iommufd_backend_*() return bool - backends/iommufd: Fix missing ERRP_GUARD() for error_prepend() - backends/iommufd: Remove mutex - backends/iommufd: Remove check on number of backend users - hw/intc: Add extioi ability of 256 vcpu interrupt routing - hw/rtc: Fixed loongson rtc emulation errors - hw/loongarch/boot: Adjust the loading position of the initrd - target/loongarch: Fix the cpu unplug resource leak - target/loongarch: fix vcpu reset command word issue - vdpa:Fix dirty page bitmap synchronization not done after suspend for vdpa devices Signed-off-by: Jiabo Feng <fengjiabo1@huawei.com> (cherry picked from commit a5212066e7516ff2a316e1b2feaa75dd5ee4d17a)
77 lines
2.7 KiB
Diff
77 lines
2.7 KiB
Diff
From 2a51f062a46c2e3fbd96a1d75f9d53cab449f4ac Mon Sep 17 00:00:00 2001
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From: Xianglai Li <lixianglai@loongson.cn>
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Date: Fri, 21 Mar 2025 20:40:37 +0800
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Subject: [PATCH] target/loongarch: Fix the cpu unplug resource leak
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When the cpu is created, qemu_add_vm_change_state_handler
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is called in the kvm_arch_init_vcpu function to create
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the VMChangeStateEntry resource.
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However, the resource is not released when the cpu is destroyed.
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This results in a qemu process segment error when the virtual
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machine restarts after the cpu is unplugged.
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This patch solves the problem by adding the corresponding resource
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release process to the kvm_arch_destroy_vcpu function.
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Signed-off-by: Xianglai Li <lixianglai@loongson.cn>
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---
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target/loongarch/cpu.c | 2 +-
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target/loongarch/cpu.h | 1 +
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target/loongarch/kvm/kvm.c | 5 ++++-
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3 files changed, 6 insertions(+), 2 deletions(-)
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diff --git a/target/loongarch/cpu.c b/target/loongarch/cpu.c
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index 570ce8be3b..561566f3a0 100644
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--- a/target/loongarch/cpu.c
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+++ b/target/loongarch/cpu.c
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@@ -573,7 +573,7 @@ static void loongarch_cpu_reset_hold(Object *obj)
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env->CSR_ECFG = FIELD_DP64(env->CSR_ECFG, CSR_ECFG, VS, 0);
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env->CSR_ECFG = FIELD_DP64(env->CSR_ECFG, CSR_ECFG, LIE, 0);
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- env->CSR_ESTAT = env->CSR_ESTAT & (~MAKE_64BIT_MASK(0, 2));
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+ env->CSR_ESTAT = 0;
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env->CSR_RVACFG = FIELD_DP64(env->CSR_RVACFG, CSR_RVACFG, RBITS, 0);
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env->CSR_CPUID = cs->cpu_index;
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env->CSR_TCFG = FIELD_DP64(env->CSR_TCFG, CSR_TCFG, EN, 0);
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diff --git a/target/loongarch/cpu.h b/target/loongarch/cpu.h
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index 9af622aba5..6cc717c5ea 100644
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--- a/target/loongarch/cpu.h
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+++ b/target/loongarch/cpu.h
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@@ -427,6 +427,7 @@ struct ArchCPU {
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const char *dtb_compatible;
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/* used by KVM_REG_LOONGARCH_COUNTER ioctl to access guest time counters */
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uint64_t kvm_state_counter;
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+ VMChangeStateEntry *vmsentry;
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};
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/**
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diff --git a/target/loongarch/kvm/kvm.c b/target/loongarch/kvm/kvm.c
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index 277210ca04..f6e008a517 100644
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--- a/target/loongarch/kvm/kvm.c
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+++ b/target/loongarch/kvm/kvm.c
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@@ -905,9 +905,10 @@ int kvm_arch_init_vcpu(CPUState *cs)
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uint64_t val;
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int ret;
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Error *local_err = NULL;
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+ LoongArchCPU *cpu = LOONGARCH_CPU(cs);
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ret = 0;
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- qemu_add_vm_change_state_handler(kvm_loongarch_vm_stage_change, cs);
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+ cpu->vmsentry = qemu_add_vm_change_state_handler(kvm_loongarch_vm_stage_change, cs);
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if (!kvm_get_one_reg(cs, KVM_REG_LOONGARCH_DEBUG_INST, &val)) {
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brk_insn = val;
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@@ -928,6 +929,8 @@ int kvm_arch_init_vcpu(CPUState *cs)
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int kvm_arch_destroy_vcpu(CPUState *cs)
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{
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+ LoongArchCPU *cpu = LOONGARCH_CPU(cs);
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+ qemu_del_vm_change_state_handler(cpu->vmsentry);
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return 0;
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}
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--
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2.41.0.windows.1
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