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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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6
arch/powerpc/mm/fault.c
View File

@@ -443,8 +443,12 @@ good_area:
regs, address);
#ifdef CONFIG_PPC_SMLPAR
if (firmware_has_feature(FW_FEATURE_CMO)) {
u32 page_ins;
preempt_disable();
get_lppaca()->page_ins += (1 << PAGE_FACTOR);
page_ins = be32_to_cpu(get_lppaca()->page_ins);
page_ins += 1 << PAGE_FACTOR;
get_lppaca()->page_ins = cpu_to_be32(page_ins);
preempt_enable();
}
#endif /* CONFIG_PPC_SMLPAR */

9
arch/powerpc/mm/slb.c
View File

@@ -66,8 +66,10 @@ static inline void slb_shadow_update(unsigned long ea, int ssize,
* we only update the current CPU's SLB shadow buffer.
*/
get_slb_shadow()->save_area[entry].esid = 0;
get_slb_shadow()->save_area[entry].vsid = mk_vsid_data(ea, ssize, flags);
get_slb_shadow()->save_area[entry].esid = mk_esid_data(ea, ssize, entry);
get_slb_shadow()->save_area[entry].vsid =
cpu_to_be64(mk_vsid_data(ea, ssize, flags));
get_slb_shadow()->save_area[entry].esid =
cpu_to_be64(mk_esid_data(ea, ssize, entry));
}
static inline void slb_shadow_clear(unsigned long entry)
@@ -112,7 +114,8 @@ static void __slb_flush_and_rebolt(void)
} else {
/* Update stack entry; others don't change */
slb_shadow_update(get_paca()->kstack, mmu_kernel_ssize, lflags, 2);
ksp_vsid_data = get_slb_shadow()->save_area[2].vsid;
ksp_vsid_data =
be64_to_cpu(get_slb_shadow()->save_area[2].vsid);
}
/* We need to do this all in asm, so we're sure we don't touch