diff options
| author | Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> | 2020-06-08 12:39:04 +0530 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2020-09-15 22:13:22 +1000 |
| commit | b32d5d7e920a364287f6206af2d20179978a617d (patch) | |
| tree | 7b59e35679a1beb2c3540f1bb8ea03bdb960a02f /arch/powerpc/include/asm/book3s/64/mmu-hash.h | |
| parent | 7746406baa3bc9e23fdd7b7da2f04d86e25ab837 (diff) | |
| download | linux-b32d5d7e920a364287f6206af2d20179978a617d.tar.bz2 | |
powerpc/mm/book3s: Split radix and hash MAX_PHYSMEM limit
MAX_PHYSMEM #define is used along with sparsemem to determine the SECTION_SHIFT
value. Powerpc also uses the same value to limit the max memory enabled on the
system. With 4K PAGE_SIZE and hash translation mode, we want to limit the max
memory enabled to 64TB due to page table size restrictions. However, with
radix translation, we don't have these restrictions. Hence split the radix
and hash MA_PHYSMEM limit and use different limit for each of them.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200608070904.387440-4-aneesh.kumar@linux.ibm.com
Diffstat (limited to 'arch/powerpc/include/asm/book3s/64/mmu-hash.h')
| -rw-r--r-- | arch/powerpc/include/asm/book3s/64/mmu-hash.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/powerpc/include/asm/book3s/64/mmu-hash.h b/arch/powerpc/include/asm/book3s/64/mmu-hash.h index 93d18da5e7ec..683a9c7d1b03 100644 --- a/arch/powerpc/include/asm/book3s/64/mmu-hash.h +++ b/arch/powerpc/include/asm/book3s/64/mmu-hash.h @@ -577,8 +577,8 @@ extern void slb_set_size(u16 size); * For vmalloc and memmap, we use just one context with 512TB. With 64 byte * struct page size, we need ony 32 TB in memmap for 2PB (51 bits (MAX_PHYSMEM_BITS)). */ -#if (MAX_PHYSMEM_BITS > MAX_EA_BITS_PER_CONTEXT) -#define MAX_KERNEL_CTX_CNT (1UL << (MAX_PHYSMEM_BITS - MAX_EA_BITS_PER_CONTEXT)) +#if (H_MAX_PHYSMEM_BITS > MAX_EA_BITS_PER_CONTEXT) +#define MAX_KERNEL_CTX_CNT (1UL << (H_MAX_PHYSMEM_BITS - MAX_EA_BITS_PER_CONTEXT)) #else #define MAX_KERNEL_CTX_CNT 1 #endif |