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powerpc/mm/hash64: Increase the VA range

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This patch increases the max virtual (effective) address value to 4PB.
With 4K page size config we continue to limit ourself to 64TB.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
[mpe: Keep the H_PGTABLE_RANGE test, update it to work]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Aneesh Kumar K.V 2018-03-26 15:34:49 +05:30 committed by Michael Ellerman
parent f384796c40
commit c2b4d8b741
5 changed files with 13 additions and 13 deletions
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2
arch/powerpc/include/asm/book3s/64/hash-64k.h
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@ -4,7 +4,7 @@
#define H_PTE_INDEX_SIZE 8
#define H_PMD_INDEX_SIZE 10
#define H_PUD_INDEX_SIZE 7
#define H_PUD_INDEX_SIZE 10
#define H_PGD_INDEX_SIZE 8
/*

9
arch/powerpc/include/asm/processor.h
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@ -109,6 +109,13 @@ void release_thread(struct task_struct *);
#define TASK_SIZE_64TB (0x0000400000000000UL)
#define TASK_SIZE_128TB (0x0000800000000000UL)
#define TASK_SIZE_512TB (0x0002000000000000UL)
#define TASK_SIZE_1PB (0x0004000000000000UL)
#define TASK_SIZE_2PB (0x0008000000000000UL)
/*
* With 52 bits in the address we can support
* upto 4PB of range.
*/
#define TASK_SIZE_4PB (0x0010000000000000UL)
/*
* For now 512TB is only supported with book3s and 64K linux page size.
@ -117,7 +124,7 @@ void release_thread(struct task_struct *);
/*
* Max value currently used:
*/
#define TASK_SIZE_USER64 TASK_SIZE_512TB
#define TASK_SIZE_USER64 TASK_SIZE_4PB
#define DEFAULT_MAP_WINDOW_USER64 TASK_SIZE_128TB
#define TASK_CONTEXT_SIZE TASK_SIZE_512TB
#else

6
arch/powerpc/mm/init_64.c
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@ -68,12 +68,6 @@
#include "mmu_decl.h"
#ifdef CONFIG_PPC_BOOK3S_64
#if H_PGTABLE_RANGE > USER_VSID_RANGE
#warning Limited user VSID range means pagetable space is wasted
#endif
#endif /* CONFIG_PPC_BOOK3S_64 */
phys_addr_t memstart_addr = ~0;
EXPORT_SYMBOL_GPL(memstart_addr);
phys_addr_t kernstart_addr;

4
arch/powerpc/mm/pgtable-hash64.c
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@ -24,6 +24,10 @@
#define CREATE_TRACE_POINTS
#include <trace/events/thp.h>
#if H_PGTABLE_RANGE > (USER_VSID_RANGE * (TASK_SIZE_USER64 / TASK_CONTEXT_SIZE))
#warning Limited user VSID range means pagetable space is wasted
#endif
#ifdef CONFIG_SPARSEMEM_VMEMMAP
/*
* vmemmap is the starting address of the virtual address space where

5
arch/powerpc/mm/pgtable_64.c
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@ -57,11 +57,6 @@
#include "mmu_decl.h"
#ifdef CONFIG_PPC_BOOK3S_64
#if TASK_SIZE_USER64 > (1UL << (ESID_BITS + SID_SHIFT))
#error TASK_SIZE_USER64 exceeds user VSID range
#endif
#endif
#ifdef CONFIG_PPC_BOOK3S_64
/*