Commit 659ad6d8 authored by Anup Patel's avatar Anup Patel Committed by Anup Patel
Browse files

RISC-V: KVM: Use PAGE_KERNEL_IO in kvm_riscv_gstage_ioremap() 



When the host has Svpbmt extension, we should use page based memory
type 2 (i.e. IO) for IO mappings in the G-stage page table.

To achieve this, we replace use of PAGE_KERNEL with PAGE_KERNEL_IO
in the kvm_riscv_gstage_ioremap().

Signed-off-by: default avatarAnup Patel <apatel@ventanamicro.com>
Reviewed-by: default avatarAtish Patra <atishp@rivosinc.com>
Signed-off-by: default avatarAnup Patel <anup@brainfault.org>
parent c9d57373

arch/riscv/kvm/mmu.c

+1 −1
Original line number Diff line number Diff line
@@ -361,7 +361,7 @@ int kvm_riscv_gstage_ioremap(struct kvm *kvm, gpa_t gpa, 
	pfn = __phys_to_pfn(hpa);



	for (addr = gpa; addr < end; addr += PAGE_SIZE) {

		pte = pfn_pte(pfn, PAGE_KERNEL);

		pte = pfn_pte(pfn, PAGE_KERNEL_IO);



		if (!writable)

			pte = pte_wrprotect(pte);