diff options
Diffstat (limited to 'virt/kvm/arm/mmu.c')
| -rw-r--r-- | virt/kvm/arm/mmu.c | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/virt/kvm/arm/mmu.c b/virt/kvm/arm/mmu.c index 2bc32bdf932a..52b0ee31ebee 100644 --- a/virt/kvm/arm/mmu.c +++ b/virt/kvm/arm/mmu.c @@ -713,28 +713,38 @@ int create_hyp_mappings(void *from, void *to, pgprot_t prot) * @phys_addr: The physical start address which gets mapped * @size: Size of the region being mapped * @kaddr: Kernel VA for this mapping - * - * The resulting HYP VA is the same as the kernel VA, modulo - * HYP_PAGE_OFFSET. + * @haddr: HYP VA for this mapping */ int create_hyp_io_mappings(phys_addr_t phys_addr, size_t size, - void __iomem **kaddr) + void __iomem **kaddr, + void __iomem **haddr) { unsigned long start, end; + int ret; *kaddr = ioremap(phys_addr, size); if (!*kaddr) return -ENOMEM; if (is_kernel_in_hyp_mode()) { + *haddr = *kaddr; return 0; } start = kern_hyp_va((unsigned long)*kaddr); end = kern_hyp_va((unsigned long)*kaddr + size); - return __create_hyp_mappings(hyp_pgd, PTRS_PER_PGD, start, end, + ret = __create_hyp_mappings(hyp_pgd, PTRS_PER_PGD, start, end, __phys_to_pfn(phys_addr), PAGE_HYP_DEVICE); + + if (ret) { + iounmap(*kaddr); + *kaddr = NULL; + return ret; + } + + *haddr = (void __iomem *)start; + return 0; } /** |