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RISC-V: KVM: Add the split page cache for ioctl context

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Add the split page cache for dirty logging enablement and the
KVM_CLEAR_DIRTY_LOG ioctl.

Signed-off-by: Wang Yechao <wang.yechao255@zte.com.cn>
Reviewed-by: Anup Patel <anup@brainfault.org>
Link: https://lore.kernel.org/r/20260731091215.1549430-2-wang.yechao255@zte.com.cn
Signed-off-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Wang Yechao 2026-07-31 17:12:06 +08:00 committed by Anup Patel
parent 5044816169
commit 6c7f75ef09
2 changed files with 4 additions and 0 deletions
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1
arch/riscv/include/asm/kvm_host.h
View File

@ -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;

3
arch/riscv/kvm/mmu.c
View File

@ -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)