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| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2010-04-09 13:43:02 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com> | 2010-04-09 13:43:02 +0200 |
| commit | 7d3f661e5757e84f1fb2e10093cfa2f7b057bc2f (patch) | |
| tree | 20d4191cfd0d3bd1fe90fede4ebcbc6581d823e4 /arch/s390 | |
| parent | 6af7eea2aee57b869f34eba0a94ef122fe90fbfd (diff) | |
| download | op-kernel-dev-7d3f661e5757e84f1fb2e10093cfa2f7b057bc2f.zip op-kernel-dev-7d3f661e5757e84f1fb2e10093cfa2f7b057bc2f.tar.gz | |
[S390] increase default size of vmalloc area
The default size of the vmalloc area is currently 1 GB. The memory resource
controller uses about 10 MB of vmalloc space per gigabyte of memory. That
turns a system with more than ~100 GB memory unbootable with the default
vmalloc size. It costs us nothing to increase the default size to some
more adequate value, e.g. 128 GB.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/include/asm/pgtable.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h index 9b5b918..89a504c 100644 --- a/arch/s390/include/asm/pgtable.h +++ b/arch/s390/include/asm/pgtable.h @@ -105,7 +105,7 @@ extern char empty_zero_page[PAGE_SIZE]; #ifndef __ASSEMBLY__ /* * The vmalloc area will always be on the topmost area of the kernel - * mapping. We reserve 96MB (31bit) / 1GB (64bit) for vmalloc, + * mapping. We reserve 96MB (31bit) / 128GB (64bit) for vmalloc, * which should be enough for any sane case. * By putting vmalloc at the top, we maximise the gap between physical * memory and vmalloc to catch misplaced memory accesses. As a side @@ -120,8 +120,8 @@ extern unsigned long VMALLOC_START; #define VMALLOC_END 0x7e000000UL #define VMEM_MAP_END 0x80000000UL #else /* __s390x__ */ -#define VMALLOC_SIZE (1UL << 30) -#define VMALLOC_END 0x3e040000000UL +#define VMALLOC_SIZE (128UL << 30) +#define VMALLOC_END 0x3e000000000UL #define VMEM_MAP_END 0x40000000000UL #endif /* __s390x__ */ |
