diff options
| author |   Alexander Graf <agraf@suse.de> | 2012-10-05 04:34:40 +0200 |
|---|---|---|
| committer | Alexander Graf <agraf@suse.de> | 2012-10-05 04:38:46 +0200 |
| commit | ef8beb0e94c75984e016e855164361c36e15396c (patch) | |
| tree | cc877c26df4ae9f7d79d4c3dfb7d639d3e2d95f8 | |
| parent | fb37c3029c5a695e367baaacc6baf17640cc63cc (diff) | |
PPC: KVM: Fix BAT put
In the sregs API, upper and lower 32bit segments of the BAT registers
are swapped when doing a set. Since we need to support old kernels out
there, don't bother to fix it in the kernel, but instead work around
the problem in QEMU by swapping on put.
Signed-off-by: Alexander Graf <agraf@suse.de>
| -rw-r--r-- | target-ppc/kvm.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/target-ppc/kvm.c b/target-ppc/kvm.c index 1975323eb..93c5bb75e 100644 --- a/target-ppc/kvm.c +++ b/target-ppc/kvm.c @@ -493,10 +493,11 @@ int kvm_arch_put_registers(CPUPPCState *env, int level) /* Sync BATs */ for (i = 0; i < 8; i++) { - sregs.u.s.ppc32.dbat[i] = ((uint64_t)env->DBAT[1][i] << 32) - | env->DBAT[0][i]; - sregs.u.s.ppc32.ibat[i] = ((uint64_t)env->IBAT[1][i] << 32) - | env->IBAT[0][i]; + /* Beware. We have to swap upper and lower bits here */ + sregs.u.s.ppc32.dbat[i] = ((uint64_t)env->DBAT[0][i] << 32) + | env->DBAT[1][i]; + sregs.u.s.ppc32.ibat[i] = ((uint64_t)env->IBAT[0][i] << 32) + | env->IBAT[1][i]; } ret = kvm_vcpu_ioctl(env, KVM_SET_SREGS, &sregs); |