diff options
| author | Anton Blanchard <anton@samba.org> | 2013-08-07 02:01:51 +1000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2013-08-14 15:33:40 +1000 |
| commit | 54bb7f4bda0ee49f39dc593c2d73fe6053a99dbb (patch) | |
| tree | 80a86974e8e89de50ec9eaacf3366a2f44c82986 /arch/powerpc/kvm/book3s_hv_rm_mmu.c | |
| parent | 8bd0b119ae64bf448e5f45d208007950e0ac2754 (diff) | |
powerpc: Make rwlocks endian safe
Our ppc64 spinlocks and rwlocks use a trick where a lock token and
the paca index are placed in the lock with a single store. Since we
are using two u16s they need adjusting for little endian.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/kvm/book3s_hv_rm_mmu.c')
| -rw-r--r-- | arch/powerpc/kvm/book3s_hv_rm_mmu.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/powerpc/kvm/book3s_hv_rm_mmu.c b/arch/powerpc/kvm/book3s_hv_rm_mmu.c index fc25689a9f35..c3785d4aeed7 100644 --- a/arch/powerpc/kvm/book3s_hv_rm_mmu.c +++ b/arch/powerpc/kvm/book3s_hv_rm_mmu.c @@ -363,7 +363,11 @@ long kvmppc_h_enter(struct kvm_vcpu *vcpu, unsigned long flags, vcpu->arch.pgdir, true, &vcpu->arch.gpr[4]); } +#ifdef __BIG_ENDIAN__ #define LOCK_TOKEN (*(u32 *)(&get_paca()->lock_token)) +#else +#define LOCK_TOKEN (*(u32 *)(&get_paca()->paca_index)) +#endif static inline int try_lock_tlbie(unsigned int *lock) { |