Re: [PATCH v8 11/14] KVM: arm64: Implement kvm_arch_flush_remote_tlbs_range()
From: Shaoqin Huang <hidden>
Date: 2023-08-11 03:04:52
Also in:
kvm, kvm-riscv, kvmarm, linux-mips, linux-riscv, lkml
On 8/9/23 07:13, Raghavendra Rao Ananta wrote:
quoted hunk ↗ jump to hunk
Implement kvm_arch_flush_remote_tlbs_range() for arm64 to invalidate the given range in the TLB. Signed-off-by: Raghavendra Rao Ananta <redacted> Reviewed-by: Gavin Shan <redacted> Reviewed-by: Shaoqin Huang <redacted> --- arch/arm64/include/asm/kvm_host.h | 2 ++ arch/arm64/kvm/mmu.c | 8 ++++++++ 2 files changed, 10 insertions(+)diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h index 20f2ba149c70c..8f2d99eaab036 100644 --- a/arch/arm64/include/asm/kvm_host.h +++ b/arch/arm64/include/asm/kvm_host.h@@ -1113,6 +1113,8 @@ struct kvm *kvm_arch_alloc_vm(void); #define __KVM_HAVE_ARCH_FLUSH_REMOTE_TLBS +#define __KVM_HAVE_ARCH_FLUSH_REMOTE_TLBS_RANGE + static inline bool kvm_vm_is_protected(struct kvm *kvm) { return false;diff --git a/arch/arm64/kvm/mmu.c b/arch/arm64/kvm/mmu.c index 0ac721fa27f18..294078ce16349 100644 --- a/arch/arm64/kvm/mmu.c +++ b/arch/arm64/kvm/mmu.c@@ -172,6 +172,14 @@ int kvm_arch_flush_remote_tlbs(struct kvm *kvm) return 0; } +int kvm_arch_flush_remote_tlbs_range(struct kvm *kvm, + gfn_t gfn, u64 nr_pages)
Hi Raghavendra, As the kernel test robot points out, the parameter `gfn` should change to `start_gfn`. Thanks, Shaoqin
+{
+ kvm_tlb_flush_vmid_range(&kvm->arch.mmu,
+ start_gfn << PAGE_SHIFT, nr_pages << PAGE_SHIFT);
+ return 0;
+}
+
static bool kvm_is_device_pfn(unsigned long pfn)
{
return !pfn_is_map_memory(pfn);-- Shaoqin _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel