diff options
| author | Andrew Jones <ajones@ventanamicro.com> | 2023-12-20 17:00:19 +0100 |
|---|---|---|
| committer | Anup Patel <anup@brainfault.org> | 2023-12-30 11:26:26 +0530 |
| commit | 38b3390ee4880140b6245fe3273fe9ce53f65bde (patch) | |
| tree | 66c6a64af72cdecd051cf7b5bb5d17c582ef278c /arch/riscv/kvm/vcpu_sbi_sta.c | |
| parent | 2a1f6bf079700f0f9d8045ab77b302aeb4d12c06 (diff) | |
RISC-V: KVM: Add SBI STA info to vcpu_arch
KVM's implementation of SBI STA needs to track the address of each
VCPU's steal-time shared memory region as well as the amount of
stolen time. Add a structure to vcpu_arch to contain this state
and make sure that the address is always set to INVALID_GPA on
vcpu reset. And, of course, ensure KVM won't try to update steal-
time when the shared memory address is invalid.
Reviewed-by: Anup Patel <anup@brainfault.org>
Reviewed-by: Atish Patra <atishp@rivosinc.com>
Signed-off-by: Andrew Jones <ajones@ventanamicro.com>
Signed-off-by: Anup Patel <anup@brainfault.org>
Diffstat (limited to 'arch/riscv/kvm/vcpu_sbi_sta.c')
| -rw-r--r-- | arch/riscv/kvm/vcpu_sbi_sta.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/riscv/kvm/vcpu_sbi_sta.c b/arch/riscv/kvm/vcpu_sbi_sta.c index e28351c9488b..6592d287fc4e 100644 --- a/arch/riscv/kvm/vcpu_sbi_sta.c +++ b/arch/riscv/kvm/vcpu_sbi_sta.c @@ -8,8 +8,18 @@ #include <asm/kvm_vcpu_sbi.h> #include <asm/sbi.h> +void kvm_riscv_vcpu_sbi_sta_reset(struct kvm_vcpu *vcpu) +{ + vcpu->arch.sta.shmem = INVALID_GPA; + vcpu->arch.sta.last_steal = 0; +} + void kvm_riscv_vcpu_record_steal_time(struct kvm_vcpu *vcpu) { + gpa_t shmem = vcpu->arch.sta.shmem; + + if (shmem == INVALID_GPA) + return; } static int kvm_sbi_sta_steal_time_set_shmem(struct kvm_vcpu *vcpu) |