lkml.org 
[lkml]   [2022]   [Jul]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 4/5] RISC-V: KVM: Use PAGE_KERNEL_IO in kvm_riscv_gstage_ioremap()
Date
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: Anup Patel <apatel@ventanamicro.com>
---
arch/riscv/kvm/mmu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/riscv/kvm/mmu.c b/arch/riscv/kvm/mmu.c
index f7862ca4c4c6..bc545aef6034 100644
--- a/arch/riscv/kvm/mmu.c
+++ b/arch/riscv/kvm/mmu.c
@@ -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);
--
2.34.1
\
 
 \ /
  Last update: 2022-07-07 16:56    [W:0.102 / U:0.432 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site