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parisc: Increase initial kernel mapping to 32MB on 64bit kernel

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For the 64bit kernel the initially 16 MB kernel memory might become too
small if you build a kernel with many modules built-in and with kernel
text and data areas mapped on huge pages.

This patch increases the initial mapping to 32MB for 64bit kernels and
keeps 16MB for 32bit kernels.

Signed-off-by: Helge Deller <deller@gmx.de>
This commit is contained in:
Helge Deller
2015-11-20 11:17:27 +01:00
parent 4182d0cdf8
commit 332b42e4eb
2 changed files with 7 additions and 3 deletions
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6
arch/parisc/include/asm/pgtable.h
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@@ -83,7 +83,11 @@ static inline void purge_tlb_entries(struct mm_struct *mm, unsigned long addr)
printk("%s:%d: bad pgd %08lx.\n", __FILE__, __LINE__, (unsigned long)pgd_val(e))
/* This is the size of the initially mapped kernel memory */
#define KERNEL_INITIAL_ORDER 24 /* 0 to 1<<24 = 16MB */
#ifdef CONFIG_64BIT
#define KERNEL_INITIAL_ORDER 25 /* 1<<25 = 32MB */
#else
#define KERNEL_INITIAL_ORDER 24 /* 1<<24 = 16MB */
#endif
#define KERNEL_INITIAL_SIZE (1 << KERNEL_INITIAL_ORDER)
#if CONFIG_PGTABLE_LEVELS == 3