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@xxxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Alexey Kardashevskiy <aik@xxxxxxxxx>
Cc: Gregory Kurz <gkurz@xxxxxxxxxxxxxxxxxx>
---
Tested on 3.17-rc7 with LE and BE host.
arch/powerpc/kvm/book3s_64_mmu_hv.c | 2 ++
1 file changed, 2 insertions(+)
Index: linux-3.18-hv.git/arch/powerpc/kvm/book3s_64_mmu_hv.c
===================================================================
--- linux-3.18-hv.git.orig/arch/powerpc/kvm/book3s_64_mmu_hv.c
+++ linux-3.18-hv.git/arch/powerpc/kvm/book3s_64_mmu_hv.c
@@ -1542,6 +1542,8 @@ static ssize_t kvm_htab_write(struct fil
err = -EFAULT;
if (__get_user(v, lbuf) || __get_user(r, lbuf + 1))
goto out;
+ v = be64_to_cpu(v);
+ r = be64_to_cpu(r);
err = -EINVAL;
if (!(v & HPTE_V_VALID))
goto out;
--
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