diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/kvm/e500_tlb.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/arch/powerpc/kvm/e500_tlb.c b/arch/powerpc/kvm/e500_tlb.c index ec17148392b..6fefb9144f2 100644 --- a/arch/powerpc/kvm/e500_tlb.c +++ b/arch/powerpc/kvm/e500_tlb.c @@ -24,6 +24,7 @@ #include <linux/sched.h> #include <linux/rwsem.h> #include <linux/vmalloc.h> +#include <linux/hugetlb.h> #include <asm/kvm_ppc.h> #include <asm/kvm_e500.h> @@ -673,12 +674,31 @@ static inline void kvmppc_e500_shadow_map(struct kvmppc_vcpu_e500 *vcpu_e500, pfn &= ~(tsize_pages - 1); break; } + } else if (vma && hva >= vma->vm_start && + (vma->vm_flags & VM_HUGETLB)) { + unsigned long psize = vma_kernel_pagesize(vma); + + tsize = (gtlbe->mas1 & MAS1_TSIZE_MASK) >> + MAS1_TSIZE_SHIFT; + + /* + * Take the largest page size that satisfies both host + * and guest mapping + */ + tsize = min(__ilog2(psize) - 10, tsize); + + /* + * e500 doesn't implement the lowest tsize bit, + * or 1K pages. + */ + tsize = max(BOOK3E_PAGESZ_4K, tsize & ~1); } up_read(¤t->mm->mmap_sem); } if (likely(!pfnmap)) { + unsigned long tsize_pages = 1 << (tsize + 10 - PAGE_SHIFT); pfn = gfn_to_pfn_memslot(vcpu_e500->vcpu.kvm, slot, gfn); if (is_error_pfn(pfn)) { printk(KERN_ERR "Couldn't get real page for gfn %lx!\n", @@ -686,6 +706,10 @@ static inline void kvmppc_e500_shadow_map(struct kvmppc_vcpu_e500 *vcpu_e500, kvm_release_pfn_clean(pfn); return; } + + /* Align guest and physical address to page map boundaries */ + pfn &= ~(tsize_pages - 1); + gvaddr &= ~((tsize_pages << PAGE_SHIFT) - 1); } /* Drop old ref and setup new one. */ |