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RISC-V: KVM: Replace KVM_REQ_HFENCE_GVMA_VMID_ALL with KVM_REQ_TLB_FLUSH

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The KVM_REQ_HFENCE_GVMA_VMID_ALL is same as KVM_REQ_TLB_FLUSH so
to avoid confusion let's replace KVM_REQ_HFENCE_GVMA_VMID_ALL with
KVM_REQ_TLB_FLUSH. Also, rename kvm_riscv_hfence_gvma_vmid_all_process()
to kvm_riscv_tlb_flush_process().

Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Reviewed-by: Atish Patra <atishp@rivosinc.com>
Tested-by: Atish Patra <atishp@rivosinc.com>
Reviewed-by: Nutty Liu <liujingqi@lanxincomputing.com>
Link: https://lore.kernel.org/r/20250618113532.471448-5-apatel@ventanamicro.com
Signed-off-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Anup Patel
2025-06-18 17:05:24 +05:30
committed by Anup Patel
parent b79bf2025d
commit 7584eb611e
3 changed files with 8 additions and 12 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
arch/riscv/include/asm/kvm_host.h
View File

@@ -36,7 +36,6 @@
#define KVM_REQ_UPDATE_HGATP KVM_ARCH_REQ(2)
#define KVM_REQ_FENCE_I \
KVM_ARCH_REQ_FLAGS(3, KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP)
#define KVM_REQ_HFENCE_GVMA_VMID_ALL KVM_REQ_TLB_FLUSH
#define KVM_REQ_HFENCE_VVMA_ALL \
KVM_ARCH_REQ_FLAGS(4, KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP)
#define KVM_REQ_HFENCE \
@@ -330,8 +329,9 @@ void kvm_riscv_local_hfence_vvma_gva(unsigned long vmid,
unsigned long order);
void kvm_riscv_local_hfence_vvma_all(unsigned long vmid);
void kvm_riscv_tlb_flush_process(struct kvm_vcpu *vcpu);
void kvm_riscv_fence_i_process(struct kvm_vcpu *vcpu);
void kvm_riscv_hfence_gvma_vmid_all_process(struct kvm_vcpu *vcpu);
void kvm_riscv_hfence_vvma_all_process(struct kvm_vcpu *vcpu);
void kvm_riscv_hfence_process(struct kvm_vcpu *vcpu);

8
arch/riscv/kvm/tlb.c
View File

@@ -162,7 +162,7 @@ void kvm_riscv_fence_i_process(struct kvm_vcpu *vcpu)
local_flush_icache_all();
}
void kvm_riscv_hfence_gvma_vmid_all_process(struct kvm_vcpu *vcpu)
void kvm_riscv_tlb_flush_process(struct kvm_vcpu *vcpu)
{
struct kvm_vmid *v = &vcpu->kvm->arch.vmid;
unsigned long vmid = READ_ONCE(v->vmid);
@@ -342,14 +342,14 @@ void kvm_riscv_hfence_gvma_vmid_gpa(struct kvm *kvm,
data.size = gpsz;
data.order = order;
make_xfence_request(kvm, hbase, hmask, KVM_REQ_HFENCE,
KVM_REQ_HFENCE_GVMA_VMID_ALL, &data);
KVM_REQ_TLB_FLUSH, &data);
}
void kvm_riscv_hfence_gvma_vmid_all(struct kvm *kvm,
unsigned long hbase, unsigned long hmask)
{
make_xfence_request(kvm, hbase, hmask, KVM_REQ_HFENCE_GVMA_VMID_ALL,
KVM_REQ_HFENCE_GVMA_VMID_ALL, NULL);
make_xfence_request(kvm, hbase, hmask, KVM_REQ_TLB_FLUSH,
KVM_REQ_TLB_FLUSH, NULL);
}
void kvm_riscv_hfence_vvma_asid_gva(struct kvm *kvm,

8
arch/riscv/kvm/vcpu.c
View File

@@ -711,12 +711,8 @@ static void kvm_riscv_check_vcpu_requests(struct kvm_vcpu *vcpu)
if (kvm_check_request(KVM_REQ_FENCE_I, vcpu))
kvm_riscv_fence_i_process(vcpu);
/*
* The generic KVM_REQ_TLB_FLUSH is same as
* KVM_REQ_HFENCE_GVMA_VMID_ALL
*/
if (kvm_check_request(KVM_REQ_HFENCE_GVMA_VMID_ALL, vcpu))
kvm_riscv_hfence_gvma_vmid_all_process(vcpu);
if (kvm_check_request(KVM_REQ_TLB_FLUSH, vcpu))
kvm_riscv_tlb_flush_process(vcpu);
if (kvm_check_request(KVM_REQ_HFENCE_VVMA_ALL, vcpu))
kvm_riscv_hfence_vvma_all_process(vcpu);