From: James Hogan Date: Fri, 8 Jul 2016 10:53:21 +0000 (+0100) Subject: MIPS: KVM: Use virt_to_phys() to get commpage PFN X-Git-Tag: Ubuntu-5.13.0-19.19~15297^2~11 X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=cfacaced0cce20859de25b61d672edeb9789a1e9;p=mirror_ubuntu-jammy-kernel.git MIPS: KVM: Use virt_to_phys() to get commpage PFN Calculate the PFN of the commpage using virt_to_phys() instead of CPHYSADDR(). This is more portable as kzalloc() may allocate from XKPhys instead of KSeg0 on 64-bit kernels, which CPHYSADDR() doesn't handle. This is sufficient for highmem kernels too since kzalloc() will allocate from lowmem in KSeg0. Signed-off-by: James Hogan Cc: Paolo Bonzini Cc: "Radim Krčmář" Cc: Ralf Baechle Cc: linux-mips@linux-mips.org Cc: kvm@vger.kernel.org Signed-off-by: Paolo Bonzini --- diff --git a/arch/mips/kvm/tlb.c b/arch/mips/kvm/tlb.c index 9699352293e4..f5f8c2acae53 100644 --- a/arch/mips/kvm/tlb.c +++ b/arch/mips/kvm/tlb.c @@ -176,7 +176,7 @@ int kvm_mips_handle_commpage_tlb_fault(unsigned long badvaddr, unsigned long entrylo[2] = { 0, 0 }; unsigned int pair_idx; - pfn = CPHYSADDR(vcpu->arch.kseg0_commpage) >> PAGE_SHIFT; + pfn = PFN_DOWN(virt_to_phys(vcpu->arch.kseg0_commpage)); pair_idx = (badvaddr >> PAGE_SHIFT) & 1; entrylo[pair_idx] = mips3_paddr_to_tlbpfn(pfn << PAGE_SHIFT) | ((_page_cachable_default >> _CACHE_SHIFT) << ENTRYLO_C_SHIFT) |