69 lines
2.5 KiB
Diff
69 lines
2.5 KiB
Diff
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From 3feeca228b010716aacdf7159df10ea63f7e34cd Mon Sep 17 00:00:00 2001
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From: Tianrui Zhao <zhaotianrui@loongson.cn>
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Date: Fri, 5 Jan 2024 15:58:02 +0800
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Subject: [PATCH] target/loongarch: Implement kvm_arch_handle_exit
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Implement kvm_arch_handle_exit for loongarch. In this
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function, the KVM_EXIT_LOONGARCH_IOCSR is handled,
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we read or write the iocsr address space by the addr,
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length and is_write argument in kvm_run.
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Signed-off-by: Tianrui Zhao <zhaotianrui@loongson.cn>
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Signed-off-by: xianglai li <lixianglai@loongson.cn>
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Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
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Reviewed-by: Song Gao <gaosong@loongson.cn>
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Message-Id: <20240105075804.1228596-8-zhaotianrui@loongson.cn>
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Signed-off-by: Song Gao <gaosong@loongson.cn>
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---
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target/loongarch/kvm/kvm.c | 24 +++++++++++++++++++++++-
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target/loongarch/trace-events | 1 +
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2 files changed, 24 insertions(+), 1 deletion(-)
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diff --git a/target/loongarch/kvm/kvm.c b/target/loongarch/kvm/kvm.c
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index 85e7aeb083..d2dab3fef4 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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@@ -723,7 +723,29 @@ bool kvm_arch_cpu_check_are_resettable(void)
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int kvm_arch_handle_exit(CPUState *cs, struct kvm_run *run)
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{
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- return 0;
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+ int ret = 0;
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+ LoongArchCPU *cpu = LOONGARCH_CPU(cs);
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+ CPULoongArchState *env = &cpu->env;
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+ MemTxAttrs attrs = {};
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+
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+ attrs.requester_id = env_cpu(env)->cpu_index;
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+
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+ trace_kvm_arch_handle_exit(run->exit_reason);
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+ switch (run->exit_reason) {
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+ case KVM_EXIT_LOONGARCH_IOCSR:
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+ address_space_rw(&env->address_space_iocsr,
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+ run->iocsr_io.phys_addr,
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+ attrs,
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+ run->iocsr_io.data,
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+ run->iocsr_io.len,
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+ run->iocsr_io.is_write);
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+ break;
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+ default:
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+ ret = -1;
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+ warn_report("KVM: unknown exit reason %d", run->exit_reason);
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+ break;
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+ }
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+ return ret;
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}
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void kvm_arch_accel_class_init(ObjectClass *oc)
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diff --git a/target/loongarch/trace-events b/target/loongarch/trace-events
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index 937c3c7c0c..021839880e 100644
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--- a/target/loongarch/trace-events
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+++ b/target/loongarch/trace-events
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@@ -11,3 +11,4 @@ kvm_failed_get_counter(const char *msg) "Failed to get counter from KVM: %s"
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kvm_failed_put_counter(const char *msg) "Failed to put counter into KVM: %s"
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kvm_failed_get_cpucfg(const char *msg) "Failed to get cpucfg from KVM: %s"
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kvm_failed_put_cpucfg(const char *msg) "Failed to put cpucfg into KVM: %s"
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+kvm_arch_handle_exit(int num) "kvm arch handle exit, the reason number: %d"
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--
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2.27.0
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