• Sean Christopherson's avatar
    x86/vdso: Remove a stale/misleading comment from the linker script · 29434801
    Sean Christopherson authored
    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: default avatarSean Christopherson <sean.j.christopherson@intel.com>
    Acked-by: default avatarAndy 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: da861e18 ("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: default avatarIngo Molnar <mingo@kernel.org>