iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

KVM: PPC: Book3S HV: ptes are big endian

Browse Source 
When being restored from qemu, the kvm_get_htab_header are in native
endian, but the ptes are big endian.

This patch fixes restore on a KVM LE host. Qemu also needs a fix for
this :

     http://lists.nongnu.org/archive/html/qemu-ppc/2014-11/msg00008.html

Signed-off-by: Cédric Le Goater <clg@fr.ibm.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Cédric Le Goater 2014-11-21 00:45:59 +01:00 committed by Alexander Graf
parent 5b88cda665
commit ffada016fb
1 changed files with 7 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
arch/powerpc/kvm/book3s_64_mmu_hv.c
View File

@ -1542,9 +1542,15 @@ static ssize_t kvm_htab_write(struct file *file, const char __user *buf,
hptp = (__be64 *)(kvm->arch.hpt_virt + (i * HPTE_SIZE));
lbuf = (unsigned long __user *)buf;
for (j = 0; j < hdr.n_valid; ++j) {
__be64 hpte_v;
__be64 hpte_r;
err = -EFAULT;
if (__get_user(v, lbuf) || __get_user(r, lbuf + 1))
if (__get_user(hpte_v, lbuf) ||
__get_user(hpte_r, lbuf + 1))
goto out;
v = be64_to_cpu(hpte_v);
r = be64_to_cpu(hpte_r);
err = -EINVAL;
if (!(v & HPTE_V_VALID))
goto out;