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powerpc/64s/radix: Do not allocate SLB shadow structures

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These are unused in radix mode.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Nicholas Piggin 2017-08-13 11:33:43 +10:00 committed by Michael Ellerman
parent d55071905e
commit b68b1d7487
1 changed files with 11 additions and 2 deletions
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13
arch/powerpc/kernel/paca.c
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@ -99,18 +99,27 @@ static inline void free_lppacas(void) { }
* If you make the number of persistent SLB entries dynamic, please also
* update PR KVM to flush and restore them accordingly.
*/
static struct slb_shadow *slb_shadow;
static struct slb_shadow * __initdata slb_shadow;
static void __init allocate_slb_shadows(int nr_cpus, int limit)
{
int size = PAGE_ALIGN(sizeof(struct slb_shadow) * nr_cpus);
if (early_radix_enabled())
return;
slb_shadow = __va(memblock_alloc_base(size, PAGE_SIZE, limit));
memset(slb_shadow, 0, size);
}
static struct slb_shadow * __init init_slb_shadow(int cpu)
{
struct slb_shadow *s = &slb_shadow[cpu];
struct slb_shadow *s;
if (early_radix_enabled())
return NULL;
s = &slb_shadow[cpu];
/*
* When we come through here to initialise boot_paca, the slb_shadow