[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[PATCH RFC v3 13/14] target/riscv: Implement virtual time adjusting with
From: |
Yifei Jiang |
Subject: |
[PATCH RFC v3 13/14] target/riscv: Implement virtual time adjusting with vm state changing |
Date: |
Thu, 27 Aug 2020 17:21:36 +0800 |
We hope that virtual time adjusts with vm state changing. When a vm
is stopped, guest virtual time should stop counting and kvm_timer
should be stopped. When the vm is resumed, guest virtual time should
continue to count and kvm_timer should be restored.
Signed-off-by: Yifei Jiang <jiangyifei@huawei.com>
Signed-off-by: Yipeng Yin <yinyipeng1@huawei.com>
---
target/riscv/kvm.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/target/riscv/kvm.c b/target/riscv/kvm.c
index 59c537b1cb..943d733539 100644
--- a/target/riscv/kvm.c
+++ b/target/riscv/kvm.c
@@ -40,6 +40,7 @@
#include "kvm_riscv.h"
#include "sbi_ecall_interface.h"
#include "chardev/char-fe.h"
+#include "sysemu/runstate.h"
static __u64 kvm_riscv_reg_id(__u64 type, __u64 idx)
{
@@ -448,6 +449,17 @@ unsigned long kvm_arch_vcpu_id(CPUState *cpu)
return cpu->cpu_index;
}
+static void kvm_riscv_vm_state_change(void *opaque, int running, RunState
state)
+{
+ CPUState *cs = opaque;
+
+ if (running) {
+ kvm_riscv_put_regs_timer(cs);
+ } else {
+ kvm_riscv_get_regs_timer(cs);
+ }
+}
+
void kvm_arch_init_irq_routing(KVMState *s)
{
}
@@ -459,6 +471,8 @@ int kvm_arch_init_vcpu(CPUState *cs)
RISCVCPU *cpu = RISCV_CPU(cs);
__u64 id;
+ qemu_add_vm_change_state_handler(kvm_riscv_vm_state_change, cs);
+
id = kvm_riscv_reg_id(KVM_REG_RISCV_CONFIG, KVM_REG_RISCV_CONFIG_REG(isa));
ret = kvm_get_one_reg(cs, id, &isa);
if (ret) {
--
2.19.1
- [PATCH RFC v3 00/14] Add riscv kvm accel support, Yifei Jiang, 2020/08/27
- [PATCH RFC v3 03/14] target/riscv: Implement function kvm_arch_init_vcpu, Yifei Jiang, 2020/08/27
- [PATCH RFC v3 01/14] linux-header: Update linux/kvm.h, Yifei Jiang, 2020/08/27
- [PATCH RFC v3 07/14] hw/riscv: PLIC update external interrupt by KVM when kvm enabled, Yifei Jiang, 2020/08/27
- [PATCH RFC v3 06/14] target/riscv: Support start kernel directly by KVM, Yifei Jiang, 2020/08/27
- [PATCH RFC v3 05/14] arget/riscv: Implement kvm_arch_put_registers, Yifei Jiang, 2020/08/27
- [PATCH RFC v3 11/14] target/riscv: Support riscv cpu vmstate, Yifei Jiang, 2020/08/27
- [PATCH RFC v3 14/14] target/riscv: Support virtual time context synchronization, Yifei Jiang, 2020/08/27
- [PATCH RFC v3 02/14] target/riscv: Add target/riscv/kvm.c to place the public kvm interface, Yifei Jiang, 2020/08/27
- [PATCH RFC v3 12/14] target/riscv: Add kvm_riscv_get/put_regs_timer, Yifei Jiang, 2020/08/27
- [PATCH RFC v3 13/14] target/riscv: Implement virtual time adjusting with vm state changing,
Yifei Jiang <=
- [PATCH RFC v3 10/14] target/riscv: Add sifive_plic vmstate, Yifei Jiang, 2020/08/27
- [PATCH RFC v3 08/14] target/riscv: Handler KVM_EXIT_RISCV_SBI exit, Yifei Jiang, 2020/08/27
- [PATCH RFC v3 04/14] target/riscv: Implement kvm_arch_get_registers, Yifei Jiang, 2020/08/27
- [PATCH RFC v3 09/14] target/riscv: Add host cpu type, Yifei Jiang, 2020/08/27