From 6c7f75ef096ad6631d62eb66833f3737a85e5dbe Mon Sep 17 00:00:00 2001 From: Wang Yechao Date: Fri, 31 Jul 2026 17:12:06 +0800 Subject: [PATCH] RISC-V: KVM: Add the split page cache for ioctl context Add the split page cache for dirty logging enablement and the KVM_CLEAR_DIRTY_LOG ioctl. Signed-off-by: Wang Yechao Reviewed-by: Anup Patel Link: https://lore.kernel.org/r/20260731091215.1549430-2-wang.yechao255@zte.com.cn Signed-off-by: Anup Patel --- arch/riscv/include/asm/kvm_host.h | 1 + arch/riscv/kvm/mmu.c | 3 +++ 2 files changed, 4 insertions(+) diff --git a/arch/riscv/include/asm/kvm_host.h b/arch/riscv/include/asm/kvm_host.h index 489c02135d43..ba5e53e7962b 100644 --- a/arch/riscv/include/asm/kvm_host.h +++ b/arch/riscv/include/asm/kvm_host.h @@ -86,6 +86,7 @@ struct kvm_arch { pgd_t *pgd; phys_addr_t pgd_phys; unsigned long pgd_levels; + struct kvm_mmu_memory_cache pgd_split_page_cache; /* Guest Timer */ struct kvm_guest_timer timer; diff --git a/arch/riscv/kvm/mmu.c b/arch/riscv/kvm/mmu.c index cbe65e92b128..49e8cb7e3229 100644 --- a/arch/riscv/kvm/mmu.c +++ b/arch/riscv/kvm/mmu.c @@ -677,6 +677,7 @@ int kvm_riscv_mmu_alloc_pgd(struct kvm *kvm) kvm->arch.pgd = page_to_virt(pgd_page); kvm->arch.pgd_phys = page_to_phys(pgd_page); kvm->arch.pgd_levels = kvm_riscv_gstage_max_pgd_levels; + kvm->arch.pgd_split_page_cache.gfp_zero = __GFP_ZERO; return 0; } @@ -704,6 +705,8 @@ void kvm_riscv_mmu_free_pgd(struct kvm *kvm) if (pgd) free_pages((unsigned long)pgd, get_order(kvm_riscv_gstage_pgd_size)); + + kvm_mmu_free_memory_cache(&kvm->arch.pgd_split_page_cache); } void kvm_riscv_mmu_update_hgatp(struct kvm_vcpu *vcpu)