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| author | Yousong Zhou <yszhou4tech@gmail.com> | 2020-03-24 18:27:51 +0300 |
|---|---|---|
| committer | Thomas Bogendoerfer <tsbogend@alpha.franken.de> | 2020-03-25 18:07:14 +0300 |
| commit | aebdc6ff3b2e79327d8eff7c0e2d835bb1d3221f (patch) | |
| tree | 552a6b0f7ecd3f37dc938ec704f84f53835858e1 /arch/mips/kernel/vdso.c | |
| parent | d191aaffe3687d1e73e644c185f5f0550ec242b5 (diff) | |
| download | linux-aebdc6ff3b2e79327d8eff7c0e2d835bb1d3221f.tar.xz | |
MIPS: Exclude more dsemul code when CONFIG_MIPS_FP_SUPPORT=n
This furthers what commit 42b10815d559 ("MIPS: Don't compile math-emu
when CONFIG_MIPS_FP_SUPPORT=n") has done
Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Diffstat (limited to 'arch/mips/kernel/vdso.c')
| -rw-r--r-- | arch/mips/kernel/vdso.c | 26 |
1 files changed, 15 insertions, 11 deletions
diff --git a/arch/mips/kernel/vdso.c b/arch/mips/kernel/vdso.c index bc35f8499111..3adb7354bc01 100644 --- a/arch/mips/kernel/vdso.c +++ b/arch/mips/kernel/vdso.c @@ -71,10 +71,12 @@ subsys_initcall(init_vdso); static unsigned long vdso_base(void) { - unsigned long base; + unsigned long base = STACK_TOP; - /* Skip the delay slot emulation page */ - base = STACK_TOP + PAGE_SIZE; + if (IS_ENABLED(CONFIG_MIPS_FP_SUPPORT)) { + /* Skip the delay slot emulation page */ + base += PAGE_SIZE; + } if (current->flags & PF_RANDOMIZE) { base += get_random_int() & (VDSO_RANDOMIZE_SIZE - 1); @@ -95,14 +97,16 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp) if (down_write_killable(&mm->mmap_sem)) return -EINTR; - /* Map delay slot emulation page */ - base = mmap_region(NULL, STACK_TOP, PAGE_SIZE, - VM_READ | VM_EXEC | - VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC, - 0, NULL); - if (IS_ERR_VALUE(base)) { - ret = base; - goto out; + if (IS_ENABLED(CONFIG_MIPS_FP_SUPPORT)) { + /* Map delay slot emulation page */ + base = mmap_region(NULL, STACK_TOP, PAGE_SIZE, + VM_READ | VM_EXEC | + VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC, + 0, NULL); + if (IS_ERR_VALUE(base)) { + ret = base; + goto out; + } } /* |