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| author | Sean Christopherson <sean.j.christopherson@intel.com> | 2018-12-05 00:25:58 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2018-12-05 10:58:12 +0300 |
| commit | 29434801e7e9c6d05fbea4533b3c0bd6be612f62 (patch) | |
| tree | f665d56e22c79f7a190582ab7b69e1db5fdc0347 /arch/x86/entry | |
| parent | 24b7c77bbb24f129beead93574ff248c3db1288e (diff) | |
| download | linux-29434801e7e9c6d05fbea4533b3c0bd6be612f62.tar.xz | |
x86/vdso: Remove a stale/misleading comment from the linker script
Once upon a time, vdso2c aggressively stripped data from the vDSO
image when generating the final userspace image. This included
stripping the .altinstructions and .altinstr_replacement sections.
Eventually, the stripping process reverted to "objdump -S" and no
longer removed the aforementioned sections, but the comment remained.
Keeping the .alt* sections at the end of the PT_LOAD segment is no
longer necessary, but there's no harm in doing so and it's a helpful
reminder that they don't need to be included in the final vDSO image,
i.e. someone may want to take another stab at zapping/stripping the
unneeded sections.
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Acked-by: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@surriel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Fixes: da861e18eccc ("x86, vdso: Get rid of the fake section mechanism")
Link: http://lkml.kernel.org/r/20181204212600.28090-3-sean.j.christopherson@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/entry')
| -rw-r--r-- | arch/x86/entry/vdso/vdso-layout.lds.S | 5 |
1 files changed, 0 insertions, 5 deletions
diff --git a/arch/x86/entry/vdso/vdso-layout.lds.S b/arch/x86/entry/vdso/vdso-layout.lds.S index 0cedc905c8d6..93c6dc7812d0 100644 --- a/arch/x86/entry/vdso/vdso-layout.lds.S +++ b/arch/x86/entry/vdso/vdso-layout.lds.S @@ -65,11 +65,6 @@ SECTIONS .text : { *(.text*) } :text =0x90909090, - /* - * At the end so that eu-elflint stays happy when vdso2c strips - * these. A better implementation would avoid allocating space - * for these. - */ .altinstructions : { *(.altinstructions) } :text .altinstr_replacement : { *(.altinstr_replacement) } :text |