summaryrefslogtreecommitdiff
path: root/drivers/virt
diff options
context:
space:
mode:
authorAndy Lutomirski <luto@kernel.org>2015-12-16 23:18:48 -0800
committerThomas Gleixner <tglx@linutronix.de>2015-12-21 16:05:01 +0100
commit30bfa7b3488bfb1bb75c9f50a5fcac1832970c60 (patch)
treeaf1e7d3bb55f826b936c7a292b8f0f389b641222 /drivers/virt
parent6a613ac6bc015f8ef75806d397d69dbac4a8d8c4 (diff)
x86/entry: Restore traditional SYSENTER calling convention
It turns out that some Android versions hardcode the SYSENTER calling convention. This is buggy and will cause problems no matter what the kernel does. Nonetheless, we should try to support it. Credit goes to Linus for pointing out a clean way to handle the SYSENTER/SYSCALL clobber differences while preserving straightforward DWARF annotations. I believe that the original offending Android commit was: https://android.googlesource.com/platform%2Fbionic/+/7dc3684d7a2587e43e6d2a8e0e3f39bf759bd535 Reported-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com> Signed-off-by: Andy Lutomirski <luto@kernel.org> Reviewed-and-tested-by: Borislav Petkov <bp@alien8.de> Cc: <mark.gross@intel.com> Cc: Su Tao <tao.su@intel.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: <frank.wang@intel.com> Cc: <borun.fu@intel.com> Cc: Brian Gerst <brgerst@gmail.com> Cc: Mingwei Shi <mingwei.shi@intel.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'drivers/virt')
0 files changed, 0 insertions, 0 deletions