From: Anup Patel <apatel@ventanamicro.com>
To: Atish Patra <atish.patra@linux.dev>
Cc: Palmer Dabbelt <palmer@dabbelt.com>,
Paul Walmsley <paul.walmsley@sifive.com>,
Alexandre Ghiti <alex@ghiti.fr>,
Andrew Jones <ajones@ventanamicro.com>,
Anup Patel <anup@brainfault.org>,
kvm@vger.kernel.org, kvm-riscv@lists.infradead.org,
linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org,
Anup Patel <apatel@ventanamicro.com>
Subject: [PATCH 06/13] RISC-V: KVM: Replace KVM_REQ_HFENCE_GVMA_VMID_ALL with KVM_REQ_TLB_FLUSH
Date: Thu, 5 Jun 2025 11:44:51 +0530 [thread overview]
Message-ID: <20250605061458.196003-7-apatel@ventanamicro.com> (raw)
In-Reply-To: <20250605061458.196003-1-apatel@ventanamicro.com>
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>
---
arch/riscv/include/asm/kvm_host.h | 4 ++--
arch/riscv/kvm/tlb.c | 8 ++++----
arch/riscv/kvm/vcpu.c | 8 ++------
3 files changed, 8 insertions(+), 12 deletions(-)
diff --git a/arch/riscv/include/asm/kvm_host.h b/arch/riscv/include/asm/kvm_host.h
index 134adc30af52..afaf25f2c5ab 100644
--- a/arch/riscv/include/asm/kvm_host.h
+++ b/arch/riscv/include/asm/kvm_host.h
@@ -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 \
@@ -327,8 +326,9 @@ 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);
diff --git a/arch/riscv/kvm/tlb.c b/arch/riscv/kvm/tlb.c
index b3461bfd9756..da98ca801d31 100644
--- a/arch/riscv/kvm/tlb.c
+++ b/arch/riscv/kvm/tlb.c
@@ -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,
diff --git a/arch/riscv/kvm/vcpu.c b/arch/riscv/kvm/vcpu.c
index cc7d00bcf345..684efaf5cee9 100644
--- a/arch/riscv/kvm/vcpu.c
+++ b/arch/riscv/kvm/vcpu.c
@@ -720,12 +720,8 @@ 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);
--
2.43.0
next prev parent reply other threads:[~2025-06-05 6:15 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-06-05 6:14 [PATCH 00/13] MMU related improvements for KVM RISC-V Anup Patel
2025-06-05 6:14 ` [PATCH 01/13] RISC-V: KVM: Fix the size parameter check in SBI SFENCE calls Anup Patel
2025-06-06 0:00 ` Atish Patra
2025-06-09 4:43 ` Anup Patel
2025-06-05 6:14 ` [PATCH 02/13] RISC-V: KVM: Don't treat SBI HFENCE calls as NOPs Anup Patel
2025-06-06 0:11 ` Atish Patra
2025-06-09 4:43 ` Anup Patel
2025-06-05 6:14 ` [PATCH 03/13] RISC-V: KVM: Check kvm_riscv_vcpu_alloc_vector_context() return value Anup Patel
2025-06-06 0:16 ` Atish Patra
2025-06-09 5:01 ` Anup Patel
2025-06-05 6:14 ` [PATCH 04/13] RISC-V: KVM: Drop the return value of kvm_riscv_vcpu_aia_init() Anup Patel
2025-06-06 0:52 ` Atish Patra
2025-06-06 4:14 ` Nutty Liu
2025-06-05 6:14 ` [PATCH 05/13] RISC-V: KVM: Rename and move kvm_riscv_local_tlb_sanitize() Anup Patel
2025-06-06 1:21 ` Atish Patra
2025-06-06 4:25 ` Nutty Liu
2025-06-05 6:14 ` Anup Patel [this message]
2025-06-06 1:24 ` [PATCH 06/13] RISC-V: KVM: Replace KVM_REQ_HFENCE_GVMA_VMID_ALL with KVM_REQ_TLB_FLUSH Atish Patra
2025-06-05 6:14 ` [PATCH 07/13] RISC-V: KVM: Don't flush TLB in gstage_set_pte() when PTE is unchanged Anup Patel
2025-06-05 6:14 ` [PATCH 08/13] RISC-V: KVM: Implement kvm_arch_flush_remote_tlbs_range() Anup Patel
2025-06-05 6:14 ` [PATCH 09/13] RISC-V: KVM: Factor-out MMU related declarations into separate headers Anup Patel
2025-06-05 6:14 ` [PATCH 10/13] RISC-V: KVM: Introduce struct kvm_gstage_mapping Anup Patel
2025-06-05 6:14 ` [PATCH 11/13] RISC-V: KVM: Add vmid field to struct kvm_riscv_hfence Anup Patel
2025-06-05 6:14 ` [PATCH 12/13] RISC-V: KVM: Factor-out g-stage page table management Anup Patel
2025-06-05 6:14 ` [PATCH 13/13] RISC-V: KVM: Pass VMID as parameter to kvm_riscv_hfence_xyz() APIs Anup Patel
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