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powerpc: Make slb_shadow a local 

The only external user of slb_shadow is the pseries lpar code, and it
can access through the paca array instead.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Jeremy Kerr 2013-12-05 11:31:08 +08:00 committed by Benjamin Herrenschmidt
parent d317ac1750
commit 1a8f6f97ea
3 changed files with 2 additions and 4 deletions
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2
arch/powerpc/include/asm/lppaca.h
View File

@ -132,8 +132,6 @@ struct slb_shadow {
} save_area[SLB_NUM_BOLTED];
} ____cacheline_aligned;
extern struct slb_shadow slb_shadow[];
/*
* Layout of entries in the hypervisor's dispatch trace log buffer.
*/

2
arch/powerpc/kernel/paca.c
View File

@ -99,7 +99,7 @@ static inline void free_lppacas(void) { }
* 3 persistent SLBs are registered here. The buffer will be zero
* initially, hence will all be invaild until we actually write them.
*/
struct slb_shadow slb_shadow[] __cacheline_aligned = {
static struct slb_shadow slb_shadow[] __cacheline_aligned = {
[0 ... (NR_CPUS-1)] = {
.persistent = cpu_to_be32(SLB_NUM_BOLTED),
.buffer_length = cpu_to_be32(sizeof(struct slb_shadow)),

2
arch/powerpc/platforms/pseries/lpar.c
View File

@ -92,7 +92,7 @@ void vpa_init(int cpu)
* PAPR says this feature is SLB-Buffer but firmware never
* reports that. All SPLPAR support SLB shadow buffer.
*/
addr = __pa(&slb_shadow[cpu]);
addr = __pa(paca[cpu].slb_shadow_ptr);
if (firmware_has_feature(FW_FEATURE_SPLPAR)) {
ret = register_slb_shadow(hwcpu, addr);
if (ret)