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| author | Alexander Graf <agraf@suse.de> | 2014-04-24 12:54:54 +0200 |
|---|---|---|
| committer | Alexander Graf <agraf@suse.de> | 2014-05-30 14:26:19 +0200 |
| commit | 4e509af9f83debe296661d2e09a8a214850efe3c (patch) | |
| tree | 7876a46c921fce704c1178cc7e2a05ab7d200ae3 /arch/powerpc | |
| parent | 860540bc50a174c2dff5e11821375475a5da5f4e (diff) | |
| download | linux-4e509af9f83debe296661d2e09a8a214850efe3c.tar.bz2 | |
KVM: PPC: Book3S_64 PR: Access HTAB in big endian
The HTAB is always big endian. We access the guest's HTAB using
copy_from/to_user, but don't yet take care of the fact that we might
be running on an LE host.
Wrap all accesses to the guest HTAB with big endian accessors.
Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/kvm/book3s_64_mmu.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/arch/powerpc/kvm/book3s_64_mmu.c b/arch/powerpc/kvm/book3s_64_mmu.c index 171e5caf2b88..b93c2456253d 100644 --- a/arch/powerpc/kvm/book3s_64_mmu.c +++ b/arch/powerpc/kvm/book3s_64_mmu.c @@ -275,12 +275,15 @@ do_second: key = 4; for (i=0; i<16; i+=2) { + u64 pte0 = be64_to_cpu(pteg[i]); + u64 pte1 = be64_to_cpu(pteg[i + 1]); + /* Check all relevant fields of 1st dword */ - if ((pteg[i] & v_mask) == v_val) { + if ((pte0 & v_mask) == v_val) { /* If large page bit is set, check pgsize encoding */ if (slbe->large && (vcpu->arch.hflags & BOOK3S_HFLAG_MULTI_PGSIZE)) { - pgsize = decode_pagesize(slbe, pteg[i+1]); + pgsize = decode_pagesize(slbe, pte1); if (pgsize < 0) continue; } @@ -297,8 +300,8 @@ do_second: goto do_second; } - v = pteg[i]; - r = pteg[i+1]; + v = be64_to_cpu(pteg[i]); + r = be64_to_cpu(pteg[i+1]); pp = (r & HPTE_R_PP) | key; if (r & HPTE_R_PP0) pp |= 8; |