Hi Li and Zhao,
On 9/10/23 11:01, xianglai li wrote:
From: Tianrui Zhao <[email protected]>
Implement kvm_arch_get/set_registers interfaces, many regs
can be get/set in the function, such as core regs, csr regs,
fpu regs, mp state, etc.
Cc: "Michael S. Tsirkin" <[email protected]>
Cc: Cornelia Huck <[email protected]>
Cc: Paolo Bonzini <[email protected]>
Cc: "Marc-André Lureau" <[email protected]>
Cc: "Daniel P. Berrangé" <[email protected]>
Cc: Thomas Huth <[email protected]>
Cc: "Philippe Mathieu-Daudé" <[email protected]>
Cc: Richard Henderson <[email protected]>
Cc: Peter Maydell <[email protected]>
Cc: Bibo Mao <[email protected]>
Cc: Song Gao <[email protected]>
Cc: Xiaojuan Yang <[email protected]>
Cc: Tianrui Zhao <[email protected]>
Signed-off-by: Tianrui Zhao <[email protected]>
Signed-off-by: xianglai li <[email protected]>
---
meson.build | 1 +
target/loongarch/cpu.c | 3 +
target/loongarch/cpu.h | 2 +
target/loongarch/kvm.c | 406 +++++++++++++++++++++++++++++++++-
target/loongarch/trace-events | 13 ++
target/loongarch/trace.h | 1 +
6 files changed, 424 insertions(+), 2 deletions(-)
create mode 100644 target/loongarch/trace-events
create mode 100644 target/loongarch/trace.h
+static int kvm_larch_getq(CPUState *cs, uint64_t reg_id,
+ uint64_t *addr)
+{
+ struct kvm_one_reg csrreg = {
+ .id = reg_id,
+ .addr = (uintptr_t)addr
+ };
+
+ return kvm_vcpu_ioctl(cs, KVM_GET_ONE_REG, &csrreg);
+}
This is kvm_get_one_reg().
+static int kvm_larch_putq(CPUState *cs, uint64_t reg_id,
+ uint64_t *addr)
+{
+ struct kvm_one_reg csrreg = {
+ .id = reg_id,
+ .addr = (uintptr_t)addr
+ };
+
+ return kvm_vcpu_ioctl(cs, KVM_SET_ONE_REG, &csrreg);
+}
This is kvm_set_one_reg().
+
+#define KVM_GET_ONE_UREG64(cs, ret, regidx, addr) \
+ ({ \
+ err = kvm_larch_getq(cs, KVM_IOC_CSRID(regidx), addr); \
+ if (err < 0) { \
+ ret = err; \
+ trace_kvm_failed_get_csr(regidx, strerror(errno)); \
+ } \
+ })
+
+#define KVM_PUT_ONE_UREG64(cs, ret, regidx, addr) \
+ ({ \
+ err = kvm_larch_putq(cs, KVM_IOC_CSRID(regidx), addr); \
+ if (err < 0) { \
+ ret = err; \
+ trace_kvm_failed_put_csr(regidx, strerror(errno)); \
+ } \
+ })
