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powerpc/mm/radix: Update machine call back to support new HCALL.

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This update the machine dep callback such that we can use the same
callback to register process table. The interface is updated such that
we can easily call H_REGISTER_PROC_TBL hcall. The HCALL itself is
introduced in a later patch.

No functionality change introduced by this patch.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Aneesh Kumar K.V 2016-07-13 15:05:28 +05:30 committed by Michael Ellerman
parent 09cf5bcb0c
commit 83209bc861
3 changed files with 16 additions and 6 deletions
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3
arch/powerpc/include/asm/machdep.h
View File

@ -256,7 +256,8 @@ struct machdep_calls {
#ifdef CONFIG_ARCH_RANDOM
int (*get_random_seed)(unsigned long *v);
#endif
int (*update_partition_table)(u64);
int (*register_process_table)(unsigned long base, unsigned long page_size,
unsigned long tbl_size);
};
extern void e500_idle(void);

10
arch/powerpc/mm/hash_native_64.c
View File

@ -725,8 +725,14 @@ static void native_flush_hash_range(unsigned long number, int local)
local_irq_restore(flags);
}
static int native_update_partition_table(u64 patb1)
static int native_register_proc_table(unsigned long base, unsigned long page_size,
unsigned long table_size)
{
unsigned long patb1 = base << 25; /* VSID */
patb1 |= (page_size << 5); /* sllp */
patb1 |= table_size;
partition_tb->patb1 = cpu_to_be64(patb1);
return 0;
}
@ -743,5 +749,5 @@ void __init hpte_init_native(void)
ppc_md.hugepage_invalidate = native_hugepage_invalidate;
if (cpu_has_feature(CPU_FTR_ARCH_300))
ppc_md.update_partition_table = native_update_partition_table;
ppc_md.register_process_table = native_register_proc_table;
}

9
arch/powerpc/mm/pgtable-radix.c
View File

@ -21,8 +21,11 @@
#include <trace/events/thp.h>
static int native_update_partition_table(u64 patb1)
static int native_register_process_table(unsigned long base, unsigned long pg_sz,
unsigned long table_size)
{
unsigned long patb1 = base | table_size | PATB_GR;
partition_tb->patb1 = cpu_to_be64(patb1);
return 0;
}
@ -168,7 +171,7 @@ redo:
* of process table here. But our linear mapping also enable us to use
* physical address here.
*/
ppc_md.update_partition_table(__pa(process_tb) | (PRTB_SIZE_SHIFT - 12) | PATB_GR);
ppc_md.register_process_table(__pa(process_tb), 0, PRTB_SIZE_SHIFT - 12);
pr_info("Process table %p and radix root for kernel: %p\n", process_tb, init_mm.pgd);
}
@ -195,7 +198,7 @@ static void __init radix_init_partition_table(void)
void __init radix_init_native(void)
{
ppc_md.update_partition_table = native_update_partition_table;
ppc_md.register_process_table = native_register_process_table;
}
static int __init get_idx_from_shift(unsigned int shift)