lkml.org 
[lkml]   [2018]   [Feb]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectRe: [linus:master] BUILD REGRESSION a2e5790d841658485d642196dbb0927303d6c22f
Adding more people for this funky warning from the kbuild robot.

Something is confused. UD0 is 0f ff, the bytes after that shouldn't
matter. But I guess they can be interpreted as modrm bytes, and
somebody started doing that.

That said, intel only _documents_ UD2 (0f 0b).

Maybe we should avoid using UD0/UD1 entirely.

Linus

On Wed, Feb 7, 2018 at 3:44 AM, kbuild test robot
<fengguang.wu@intel.com> wrote:
> tree/branch: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> branch HEAD: a2e5790d841658485d642196dbb0927303d6c22f Merge branch 'akpm' (patches from Andrew)
>
> Regressions in current branch:
>
> arch/x86/tools/insn_decoder_test: warning: ffffffff810010d7: 0f ff eb ud0 %ebx,%ebp
> arch/x86/tools/insn_decoder_test: warning: ffffffff81001152: 0f ff bf 09 00 00 00 ud0 0x9(%rdi),%edi
> arch/x86/tools/insn_decoder_test: warning: ffffffff81001275: 0f ff eb ud0 %ebx,%ebp
> arch/x86/tools/insn_decoder_test: warning: ffffffff810013fd: 0f ff bf 09 00 00 00 ud0 0x9(%rdi),%edi
> arch/x86/tools/insn_decoder_test: warning: ffffffff81001499: 0f ff bf 09 00 00 00 ud0 0x9(%rdi),%edi
> arch/x86/tools/insn_decoder_test: warning: ffffffff812296eb: 0f ff e8 ud0 %eax,%ebp

\
 
 \ /
  Last update: 2018-02-07 19:13    [W:0.057 / U:3.992 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site