diff options
| author | Christoph Hellwig <hch@lst.de> | 2020-09-03 16:22:40 +0200 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2020-09-09 04:21:36 +0200 |
| commit | 47058bb54b57962b3958a936ddbc59355e4c5504 (patch) | |
| tree | b1399d96916177ef63b8a86bf30daceb35508959 /arch/x86/ia32 | |
| parent | x86: make TASK_SIZE_MAX usable from assembly code (diff) | |
| download | linux-47058bb54b57962b3958a936ddbc59355e4c5504.tar.xz linux-47058bb54b57962b3958a936ddbc59355e4c5504.zip | |
x86: remove address space overrides using set_fs()
Stop providing the possibility to override the address space using
set_fs() now that there is no need for that any more. To properly
handle the TASK_SIZE_MAX checking for 4 vs 5-level page tables on
x86 a new alternative is introduced, which just like the one in
entry_64.S has to use the hardcoded virtual address bits to escape
the fact that TASK_SIZE_MAX isn't actually a constant when 5-level
page tables are enabled.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'arch/x86/ia32')
| -rw-r--r-- | arch/x86/ia32/ia32_aout.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/arch/x86/ia32/ia32_aout.c b/arch/x86/ia32/ia32_aout.c index ca8a657edf59..a09fc37ead9d 100644 --- a/arch/x86/ia32/ia32_aout.c +++ b/arch/x86/ia32/ia32_aout.c @@ -239,7 +239,6 @@ beyond_if: (regs)->ss = __USER32_DS; regs->r8 = regs->r9 = regs->r10 = regs->r11 = regs->r12 = regs->r13 = regs->r14 = regs->r15 = 0; - set_fs(USER_DS); return 0; } |