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| author | Anton Blanchard <anton@samba.org> | 2013-08-07 02:01:46 +1000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2013-08-14 15:33:35 +1000 |
| commit | 7ffcf8ec26f4b94b95b1297131d223b121d951e5 (patch) | |
| tree | 7b4b47eaeafe56c253350b14470fecf03b40277f /arch/powerpc/platforms | |
| parent | c72cd555e828b710bce8c3635254dbb483397142 (diff) | |
| download | op-kernel-dev-7ffcf8ec26f4b94b95b1297131d223b121d951e5.zip op-kernel-dev-7ffcf8ec26f4b94b95b1297131d223b121d951e5.tar.gz | |
powerpc: Fix little endian lppaca, slb_shadow and dtl_entry
The lppaca, slb_shadow and dtl_entry hypervisor structures are
big endian, so we have to byte swap them in little endian builds.
LE KVM hosts will also need to be fixed but for now add an #error
to remind us.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/platforms')
| -rw-r--r-- | arch/powerpc/platforms/pseries/dtl.c | 2 | ||||
| -rw-r--r-- | arch/powerpc/platforms/pseries/lpar.c | 2 | ||||
| -rw-r--r-- | arch/powerpc/platforms/pseries/processor_idle.c | 6 | ||||
| -rw-r--r-- | arch/powerpc/platforms/pseries/setup.c | 2 |
4 files changed, 8 insertions, 4 deletions
diff --git a/arch/powerpc/platforms/pseries/dtl.c b/arch/powerpc/platforms/pseries/dtl.c index 0cc0ac0..238240e 100644 --- a/arch/powerpc/platforms/pseries/dtl.c +++ b/arch/powerpc/platforms/pseries/dtl.c @@ -87,7 +87,7 @@ static void consume_dtle(struct dtl_entry *dtle, u64 index) barrier(); /* check for hypervisor ring buffer overflow, ignore this entry if so */ - if (index + N_DISPATCH_LOG < vpa->dtl_idx) + if (index + N_DISPATCH_LOG < be64_to_cpu(vpa->dtl_idx)) return; ++wp; diff --git a/arch/powerpc/platforms/pseries/lpar.c b/arch/powerpc/platforms/pseries/lpar.c index 60b6f4e..0b7c86e 100644 --- a/arch/powerpc/platforms/pseries/lpar.c +++ b/arch/powerpc/platforms/pseries/lpar.c @@ -106,7 +106,7 @@ void vpa_init(int cpu) lppaca_of(cpu).dtl_idx = 0; /* hypervisor reads buffer length from this field */ - dtl->enqueue_to_dispatch_time = DISPATCH_LOG_BYTES; + dtl->enqueue_to_dispatch_time = cpu_to_be32(DISPATCH_LOG_BYTES); ret = register_dtl(hwcpu, __pa(dtl)); if (ret) pr_err("WARNING: DTL registration of cpu %d (hw %d) " diff --git a/arch/powerpc/platforms/pseries/processor_idle.c b/arch/powerpc/platforms/pseries/processor_idle.c index 92db881..14899b1 100644 --- a/arch/powerpc/platforms/pseries/processor_idle.c +++ b/arch/powerpc/platforms/pseries/processor_idle.c @@ -45,7 +45,11 @@ static inline void idle_loop_prolog(unsigned long *in_purr) static inline void idle_loop_epilog(unsigned long in_purr) { - get_lppaca()->wait_state_cycles += mfspr(SPRN_PURR) - in_purr; + u64 wait_cycles; + + wait_cycles = be64_to_cpu(get_lppaca()->wait_state_cycles); + wait_cycles += mfspr(SPRN_PURR) - in_purr; + get_lppaca()->wait_state_cycles = cpu_to_be64(wait_cycles); get_lppaca()->idle = 0; } diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c index b19cd83..33d6196 100644 --- a/arch/powerpc/platforms/pseries/setup.c +++ b/arch/powerpc/platforms/pseries/setup.c @@ -323,7 +323,7 @@ static int alloc_dispatch_logs(void) get_paca()->lppaca_ptr->dtl_idx = 0; /* hypervisor reads buffer length from this field */ - dtl->enqueue_to_dispatch_time = DISPATCH_LOG_BYTES; + dtl->enqueue_to_dispatch_time = cpu_to_be32(DISPATCH_LOG_BYTES); ret = register_dtl(hard_smp_processor_id(), __pa(dtl)); if (ret) pr_err("WARNING: DTL registration of cpu %d (hw %d) failed " |
