Messages in this thread | | | Date | Tue, 3 Feb 2015 12:25:23 +0100 | From | Ingo Molnar <> | Subject | Re: [GIT PULL] x86/asm changes for 3.20 |
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* Andy Lutomirski <luto@amacapital.net> wrote:
> Hi Ingo and Thomas, > > Please consider pulling for x86/asm. The sysret stuff hasn't been in > -next, but it's been floating around for a while, and got a reasonably > favorable reception. > > If you think it's too late for the sysret stuff for 3.20, then please > pull just "x86, traps: Fix ist_enter from userspace" instead. It > fixes a regression. > > Thanks, > Andy > > The following changes since commit 772a9aca12567badb5b9caf2af249a5991f47ea8: > > Merge tag 'pr-20150114-x86-entry' of > git://git.kernel.org/pub/scm/linux/kernel/git/luto/linux into x86/asm > (2015-01-28 15:33:26 +0100) > > are available in the git repository at: > > git://git.kernel.org/pub/scm/linux/kernel/git/luto/linux.git > tags/pr-20150201-x86-entry > > for you to fetch changes up to 96b6352c12711d5c0bb7157f49c92580248e8146: > > x86_64, entry: Remove the syscall exit audit and schedule > optimizations (2015-02-01 04:03:02 -0800) > > ---------------------------------------------------------------- > x86: Entry cleanups and a bugfix for 3.20 > > This fixes a bug in the RCU code I added in ist_enter. It also includes > the sysret stuff discussed here: > > http://lkml.kernel.org/g/cover.1421453410.git.luto%40amacapital.net > > ---------------------------------------------------------------- > Andy Lutomirski (3): > x86, traps: Fix ist_enter from userspace > x86_64, entry: Use sysret to return to userspace when possible > x86_64, entry: Remove the syscall exit audit and schedule optimizations > > arch/x86/kernel/entry_64.S | 106 +++++++++++++++++++++++++-------------------- > arch/x86/kernel/traps.c | 25 ++++++++--- > 2 files changed, 77 insertions(+), 54 deletions(-)
Pulled, thanks a lot Andy!
I'll give it some extra testing before pushing it out into -tip and then towards linux-next.
Thanks,
Ingo
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