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| author | David S. Miller <davem@davemloft.net> | 2009-11-18 22:19:03 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-11-18 22:19:03 -0800 |
| commit | 3505d1a9fd65e2d3e00827857b6795d9d8983658 (patch) | |
| tree | 941cfafdb57c427bb6b7ebf6354ee93b2a3693b5 /arch/powerpc/kernel/vdso.c | |
| parent | dfef948ed2ba69cf041840b5e860d6b4e16fa0b1 (diff) | |
| parent | 66b00a7c93ec782d118d2c03bd599cfd041e80a1 (diff) | |
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
drivers/net/sfc/sfe4001.c
drivers/net/wireless/libertas/cmd.c
drivers/staging/Kconfig
drivers/staging/Makefile
drivers/staging/rtl8187se/Kconfig
drivers/staging/rtl8192e/Kconfig
Diffstat (limited to 'arch/powerpc/kernel/vdso.c')
| -rw-r--r-- | arch/powerpc/kernel/vdso.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/vdso.c b/arch/powerpc/kernel/vdso.c index 94e2df3cae0..137dc22afa4 100644 --- a/arch/powerpc/kernel/vdso.c +++ b/arch/powerpc/kernel/vdso.c @@ -50,6 +50,9 @@ /* Max supported size for symbol names */ #define MAX_SYMNAME 64 +/* The alignment of the vDSO */ +#define VDSO_ALIGNMENT (1 << 16) + extern char vdso32_start, vdso32_end; static void *vdso32_kbase = &vdso32_start; static unsigned int vdso32_pages; @@ -231,15 +234,21 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp) * pick a base address for the vDSO in process space. We try to put it * at vdso_base which is the "natural" base for it, but we might fail * and end up putting it elsewhere. + * Add enough to the size so that the result can be aligned. */ down_write(&mm->mmap_sem); vdso_base = get_unmapped_area(NULL, vdso_base, - vdso_pages << PAGE_SHIFT, 0, 0); + (vdso_pages << PAGE_SHIFT) + + ((VDSO_ALIGNMENT - 1) & PAGE_MASK), + 0, 0); if (IS_ERR_VALUE(vdso_base)) { rc = vdso_base; goto fail_mmapsem; } + /* Add required alignment. */ + vdso_base = ALIGN(vdso_base, VDSO_ALIGNMENT); + /* * Put vDSO base into mm struct. We need to do this before calling * install_special_mapping or the perf counter mmap tracking code |