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Wed, 04 Jun 2025 23:15:35 -0700 (PDT) Received: from localhost.localdomain ([14.141.91.70]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-3132c0bedc7sm716026a91.49.2025.06.04.23.15.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 04 Jun 2025 23:15:35 -0700 (PDT) From: Anup Patel To: Atish Patra Cc: Palmer Dabbelt , Paul Walmsley , Alexandre Ghiti , Andrew Jones , Anup Patel , kvm@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, Anup Patel Subject: [PATCH 08/13] RISC-V: KVM: Implement kvm_arch_flush_remote_tlbs_range() Date: Thu, 5 Jun 2025 11:44:53 +0530 Message-ID: <20250605061458.196003-9-apatel@ventanamicro.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250605061458.196003-1-apatel@ventanamicro.com> References: <20250605061458.196003-1-apatel@ventanamicro.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250604_231536_763348_F99D9D0C X-CRM114-Status: GOOD ( 11.23 ) X-BeenThere: kvm-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "kvm-riscv" Errors-To: kvm-riscv-bounces+kvm-riscv=archiver.kernel.org@lists.infradead.org The kvm_arch_flush_remote_tlbs_range() expected by KVM core can be easily implemented for RISC-V using kvm_riscv_hfence_gvma_vmid_gpa() hence provide it. Also with kvm_arch_flush_remote_tlbs_range() available for RISC-V, the mmu_wp_memory_region() can happily use kvm_flush_remote_tlbs_memslot() instead of kvm_flush_remote_tlbs(). Signed-off-by: Anup Patel --- arch/riscv/include/asm/kvm_host.h | 2 ++ arch/riscv/kvm/mmu.c | 2 +- arch/riscv/kvm/tlb.c | 8 ++++++++ 3 files changed, 11 insertions(+), 1 deletion(-) diff --git a/arch/riscv/include/asm/kvm_host.h b/arch/riscv/include/asm/kvm_host.h index afaf25f2c5ab..b9e241c46209 100644 --- a/arch/riscv/include/asm/kvm_host.h +++ b/arch/riscv/include/asm/kvm_host.h @@ -42,6 +42,8 @@ KVM_ARCH_REQ_FLAGS(5, KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP) #define KVM_REQ_STEAL_UPDATE KVM_ARCH_REQ(6) +#define __KVM_HAVE_ARCH_FLUSH_REMOTE_TLBS_RANGE + #define KVM_HEDELEG_DEFAULT (BIT(EXC_INST_MISALIGNED) | \ BIT(EXC_BREAKPOINT) | \ BIT(EXC_SYSCALL) | \ diff --git a/arch/riscv/kvm/mmu.c b/arch/riscv/kvm/mmu.c index d4eb1999b794..834d855b0478 100644 --- a/arch/riscv/kvm/mmu.c +++ b/arch/riscv/kvm/mmu.c @@ -342,7 +342,7 @@ static void gstage_wp_memory_region(struct kvm *kvm, int slot) spin_lock(&kvm->mmu_lock); gstage_wp_range(kvm, start, end); spin_unlock(&kvm->mmu_lock); - kvm_flush_remote_tlbs(kvm); + kvm_flush_remote_tlbs_memslot(kvm, memslot); } int kvm_riscv_gstage_ioremap(struct kvm *kvm, gpa_t gpa, diff --git a/arch/riscv/kvm/tlb.c b/arch/riscv/kvm/tlb.c index da98ca801d31..f46a27658c2e 100644 --- a/arch/riscv/kvm/tlb.c +++ b/arch/riscv/kvm/tlb.c @@ -403,3 +403,11 @@ void kvm_riscv_hfence_vvma_all(struct kvm *kvm, make_xfence_request(kvm, hbase, hmask, KVM_REQ_HFENCE_VVMA_ALL, KVM_REQ_HFENCE_VVMA_ALL, NULL); } + +int kvm_arch_flush_remote_tlbs_range(struct kvm *kvm, gfn_t gfn, u64 nr_pages) +{ + kvm_riscv_hfence_gvma_vmid_gpa(kvm, -1UL, 0, + gfn << PAGE_SHIFT, nr_pages << PAGE_SHIFT, + PAGE_SHIFT); + return 0; +} -- 2.43.0 -- kvm-riscv mailing list kvm-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/kvm-riscv From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pj1-f53.google.com (mail-pj1-f53.google.com [209.85.216.53]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id EE33A1F4C94 for ; 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Wed, 04 Jun 2025 23:15:35 -0700 (PDT) Received: from localhost.localdomain ([14.141.91.70]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-3132c0bedc7sm716026a91.49.2025.06.04.23.15.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 04 Jun 2025 23:15:35 -0700 (PDT) From: Anup Patel To: Atish Patra Cc: Palmer Dabbelt , Paul Walmsley , Alexandre Ghiti , Andrew Jones , Anup Patel , kvm@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, Anup Patel Subject: [PATCH 08/13] RISC-V: KVM: Implement kvm_arch_flush_remote_tlbs_range() Date: Thu, 5 Jun 2025 11:44:53 +0530 Message-ID: <20250605061458.196003-9-apatel@ventanamicro.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250605061458.196003-1-apatel@ventanamicro.com> References: <20250605061458.196003-1-apatel@ventanamicro.com> Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit The kvm_arch_flush_remote_tlbs_range() expected by KVM core can be easily implemented for RISC-V using kvm_riscv_hfence_gvma_vmid_gpa() hence provide it. Also with kvm_arch_flush_remote_tlbs_range() available for RISC-V, the mmu_wp_memory_region() can happily use kvm_flush_remote_tlbs_memslot() instead of kvm_flush_remote_tlbs(). Signed-off-by: Anup Patel --- arch/riscv/include/asm/kvm_host.h | 2 ++ arch/riscv/kvm/mmu.c | 2 +- arch/riscv/kvm/tlb.c | 8 ++++++++ 3 files changed, 11 insertions(+), 1 deletion(-) diff --git a/arch/riscv/include/asm/kvm_host.h b/arch/riscv/include/asm/kvm_host.h index afaf25f2c5ab..b9e241c46209 100644 --- a/arch/riscv/include/asm/kvm_host.h +++ b/arch/riscv/include/asm/kvm_host.h @@ -42,6 +42,8 @@ KVM_ARCH_REQ_FLAGS(5, KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP) #define KVM_REQ_STEAL_UPDATE KVM_ARCH_REQ(6) +#define __KVM_HAVE_ARCH_FLUSH_REMOTE_TLBS_RANGE + #define KVM_HEDELEG_DEFAULT (BIT(EXC_INST_MISALIGNED) | \ BIT(EXC_BREAKPOINT) | \ BIT(EXC_SYSCALL) | \ diff --git a/arch/riscv/kvm/mmu.c b/arch/riscv/kvm/mmu.c index d4eb1999b794..834d855b0478 100644 --- a/arch/riscv/kvm/mmu.c +++ b/arch/riscv/kvm/mmu.c @@ -342,7 +342,7 @@ static void gstage_wp_memory_region(struct kvm *kvm, int slot) spin_lock(&kvm->mmu_lock); gstage_wp_range(kvm, start, end); spin_unlock(&kvm->mmu_lock); - kvm_flush_remote_tlbs(kvm); + kvm_flush_remote_tlbs_memslot(kvm, memslot); } int kvm_riscv_gstage_ioremap(struct kvm *kvm, gpa_t gpa, diff --git a/arch/riscv/kvm/tlb.c b/arch/riscv/kvm/tlb.c index da98ca801d31..f46a27658c2e 100644 --- a/arch/riscv/kvm/tlb.c +++ b/arch/riscv/kvm/tlb.c @@ -403,3 +403,11 @@ void kvm_riscv_hfence_vvma_all(struct kvm *kvm, make_xfence_request(kvm, hbase, hmask, KVM_REQ_HFENCE_VVMA_ALL, KVM_REQ_HFENCE_VVMA_ALL, NULL); } + +int kvm_arch_flush_remote_tlbs_range(struct kvm *kvm, gfn_t gfn, u64 nr_pages) +{ + kvm_riscv_hfence_gvma_vmid_gpa(kvm, -1UL, 0, + gfn << PAGE_SHIFT, nr_pages << PAGE_SHIFT, + PAGE_SHIFT); + return 0; +} -- 2.43.0 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 2AAA6C5B552 for ; 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Wed, 04 Jun 2025 23:15:35 -0700 (PDT) Received: from localhost.localdomain ([14.141.91.70]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-3132c0bedc7sm716026a91.49.2025.06.04.23.15.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 04 Jun 2025 23:15:35 -0700 (PDT) From: Anup Patel To: Atish Patra Cc: Palmer Dabbelt , Paul Walmsley , Alexandre Ghiti , Andrew Jones , Anup Patel , kvm@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, Anup Patel Subject: [PATCH 08/13] RISC-V: KVM: Implement kvm_arch_flush_remote_tlbs_range() Date: Thu, 5 Jun 2025 11:44:53 +0530 Message-ID: <20250605061458.196003-9-apatel@ventanamicro.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250605061458.196003-1-apatel@ventanamicro.com> References: <20250605061458.196003-1-apatel@ventanamicro.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250604_231537_163225_61D2671B X-CRM114-Status: GOOD ( 11.23 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org The kvm_arch_flush_remote_tlbs_range() expected by KVM core can be easily implemented for RISC-V using kvm_riscv_hfence_gvma_vmid_gpa() hence provide it. Also with kvm_arch_flush_remote_tlbs_range() available for RISC-V, the mmu_wp_memory_region() can happily use kvm_flush_remote_tlbs_memslot() instead of kvm_flush_remote_tlbs(). Signed-off-by: Anup Patel --- arch/riscv/include/asm/kvm_host.h | 2 ++ arch/riscv/kvm/mmu.c | 2 +- arch/riscv/kvm/tlb.c | 8 ++++++++ 3 files changed, 11 insertions(+), 1 deletion(-) diff --git a/arch/riscv/include/asm/kvm_host.h b/arch/riscv/include/asm/kvm_host.h index afaf25f2c5ab..b9e241c46209 100644 --- a/arch/riscv/include/asm/kvm_host.h +++ b/arch/riscv/include/asm/kvm_host.h @@ -42,6 +42,8 @@ KVM_ARCH_REQ_FLAGS(5, KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP) #define KVM_REQ_STEAL_UPDATE KVM_ARCH_REQ(6) +#define __KVM_HAVE_ARCH_FLUSH_REMOTE_TLBS_RANGE + #define KVM_HEDELEG_DEFAULT (BIT(EXC_INST_MISALIGNED) | \ BIT(EXC_BREAKPOINT) | \ BIT(EXC_SYSCALL) | \ diff --git a/arch/riscv/kvm/mmu.c b/arch/riscv/kvm/mmu.c index d4eb1999b794..834d855b0478 100644 --- a/arch/riscv/kvm/mmu.c +++ b/arch/riscv/kvm/mmu.c @@ -342,7 +342,7 @@ static void gstage_wp_memory_region(struct kvm *kvm, int slot) spin_lock(&kvm->mmu_lock); gstage_wp_range(kvm, start, end); spin_unlock(&kvm->mmu_lock); - kvm_flush_remote_tlbs(kvm); + kvm_flush_remote_tlbs_memslot(kvm, memslot); } int kvm_riscv_gstage_ioremap(struct kvm *kvm, gpa_t gpa, diff --git a/arch/riscv/kvm/tlb.c b/arch/riscv/kvm/tlb.c index da98ca801d31..f46a27658c2e 100644 --- a/arch/riscv/kvm/tlb.c +++ b/arch/riscv/kvm/tlb.c @@ -403,3 +403,11 @@ void kvm_riscv_hfence_vvma_all(struct kvm *kvm, make_xfence_request(kvm, hbase, hmask, KVM_REQ_HFENCE_VVMA_ALL, KVM_REQ_HFENCE_VVMA_ALL, NULL); } + +int kvm_arch_flush_remote_tlbs_range(struct kvm *kvm, gfn_t gfn, u64 nr_pages) +{ + kvm_riscv_hfence_gvma_vmid_gpa(kvm, -1UL, 0, + gfn << PAGE_SHIFT, nr_pages << PAGE_SHIFT, + PAGE_SHIFT); + return 0; +} -- 2.43.0 _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv