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powerpc: Fix little endian lppaca, slb_shadow and dtl_entry

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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>
This commit is contained in:
Anton Blanchard
2013-08-07 02:01:46 +10:00
committed by Benjamin Herrenschmidt
parent c72cd555e8
commit 7ffcf8ec26
15 changed files with 65 additions and 32 deletions
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16
arch/powerpc/kernel/time.c
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@@ -210,18 +210,18 @@ static u64 scan_dispatch_log(u64 stop_tb)
if (!dtl)
return 0;
if (i == vpa->dtl_idx)
if (i == be64_to_cpu(vpa->dtl_idx))
return 0;
while (i < vpa->dtl_idx) {
while (i < be64_to_cpu(vpa->dtl_idx)) {
if (dtl_consumer)
dtl_consumer(dtl, i);
dtb = dtl->timebase;
tb_delta = dtl->enqueue_to_dispatch_time +
dtl->ready_to_enqueue_time;
dtb = be64_to_cpu(dtl->timebase);
tb_delta = be32_to_cpu(dtl->enqueue_to_dispatch_time) +
be32_to_cpu(dtl->ready_to_enqueue_time);
barrier();
if (i + N_DISPATCH_LOG < vpa->dtl_idx) {
if (i + N_DISPATCH_LOG < be64_to_cpu(vpa->dtl_idx)) {
/* buffer has overflowed */
i = vpa->dtl_idx - N_DISPATCH_LOG;
i = be64_to_cpu(vpa->dtl_idx) - N_DISPATCH_LOG;
dtl = local_paca->dispatch_log + (i % N_DISPATCH_LOG);
continue;
}
@@ -269,7 +269,7 @@ static inline u64 calculate_stolen_time(u64 stop_tb)
{
u64 stolen = 0;
if (get_paca()->dtl_ridx != get_paca()->lppaca_ptr->dtl_idx) {
if (get_paca()->dtl_ridx != be64_to_cpu(get_lppaca()->dtl_idx)) {
stolen = scan_dispatch_log(stop_tb);
get_paca()->system_time -= stolen;
}