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KVM: PPC: Book3S: PR: Fix C/R bit setting 

Commit 9308ab8e2d made C/R HTAB updates go byte-wise into the target HTAB.
However, it didn't update the guest's copy of the HTAB, but instead the
host local copy of it.

Write to the guest's HTAB instead.

Signed-off-by: Alexander Graf <agraf@suse.de>
CC: Paul Mackerras <paulus@samba.org>
Acked-by: Paul Mackerras <paulus@samba.org>
hifive-unleashed-5.1
Alexander Graf 2014-04-24 12:48:19 +02:00
parent 7562c4fded
commit 740f834eb2
2 changed files with 3 additions and 3 deletions
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2
arch/powerpc/kvm/book3s_32_mmu.c
View File

@ -270,7 +270,7 @@ static int kvmppc_mmu_book3s_32_xlate_pte(struct kvm_vcpu *vcpu, gva_t eaddr,
page */
if (found) {
u32 pte_r = pteg[i+1];
char __user *addr = (char __user *) &pteg[i+1];
char __user *addr = (char __user *) (ptegp + (i+1) * sizeof(u32));
/*
* Use single-byte writes to update the HPTE, to

4
arch/powerpc/kvm/book3s_64_mmu.c
View File

@ -342,14 +342,14 @@ do_second:
* non-PAPR platforms such as mac99, and this is
* what real hardware does.
*/
char __user *addr = (char __user *) &pteg[i+1];
char __user *addr = (char __user *) (ptegp + (i + 1) * sizeof(u64));
r |= HPTE_R_R;
put_user(r >> 8, addr + 6);
}
if (iswrite && gpte->may_write && !(r & HPTE_R_C)) {
/* Set the dirty flag */
/* Use a single byte write */
char __user *addr = (char __user *) &pteg[i+1];
char __user *addr = (char __user *) (ptegp + (i + 1) * sizeof(u64));
r |= HPTE_R_C;
put_user(r, addr + 7);
}