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authorChristoph Hellwig <hch@lst.de>2020-09-03 16:22:40 +0200
committerAl Viro <viro@zeniv.linux.org.uk>2020-09-08 22:21:36 -0400
commit47058bb54b57962b3958a936ddbc59355e4c5504 (patch)
treeb1399d96916177ef63b8a86bf30daceb35508959 /arch/x86/ia32
parenta1d826d475aafe63775b910e86ccd1bcf1e5a6e1 (diff)
downloadlinux-47058bb54b57962b3958a936ddbc59355e4c5504.tar.bz2
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.c1
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;
}