lkml.org 
[lkml]   [2014]   [Aug]   [4]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Subject[PATCH 0/6 v2] x86: entry_64.S: always allocate complete "struct pt_regs"
Date
Version 2 of the patchset.

Changes since v1 (mainly in patch 4/6):
= Reverted changes to "partial pt_regs saving" on interrupt path.
= Folded PARTIAL_FRAME macro into DEFAULT_FRAME. Patch v1
had a bug (incorrect dwarf debug info generation).
= Corrected more comments.
= Added use of SAVE_* macros to error_entry and save_paranoid.
= Added another cleanup rename patch.

TODO:
= error_entry and save_paranoid have different CFI decorations.
At least one of them is likely to be wrong...
= Move save_paranoid closer to the callers.
= "idtentry" macro uses a subroutine to factor out a largish
common code block. "interrupt" macro inlines a similar
block every time (~20 instances). Maybe factor it out?

CC: Oleg Nesterov <oleg@redhat.com>
CC: "H. Peter Anvin" <hpa@zytor.com>
CC: Andy Lutomirski <luto@amacapital.net>
CC: Frederic Weisbecker <fweisbec@gmail.com>
CC: X86 ML <x86@kernel.org>
CC: Alexei Starovoitov <ast@plumgrid.com>
CC: Will Drewry <wad@chromium.org>
CC: Kees Cook <keescook@chromium.org>
CC: linux-kernel@vger.kernel.org

Denys Vlasenko (6):
x86: entry_64.S: delete unused code
x86: open-code register save/restore in trace_hardirqs thunks
x86: entry_64.S: fold SAVE_ARGS_IRQ macro into its sole user
x86: entry_64.S: always allocate complete "struct pt_regs"
x86: mass removal of ARGOFFSET
x86: rename some macros and labels, no code changes

arch/x86/ia32/ia32entry.S | 175 +++++++++--------
arch/x86/include/asm/calling.h | 216 ++++++++++----------
arch/x86/include/asm/irqflags.h | 4 +-
arch/x86/include/asm/ptrace.h | 13 +-
arch/x86/include/uapi/asm/ptrace-abi.h | 16 +-
arch/x86/include/uapi/asm/ptrace.h | 13 +-
arch/x86/kernel/entry_64.S | 349 +++++++++++++--------------------
arch/x86/kernel/preempt.S | 16 +-
arch/x86/lib/thunk_64.S | 29 ++-
9 files changed, 395 insertions(+), 436 deletions(-)

--
1.8.1.4



\
 
 \ /
  Last update: 2014-08-04 16:01    [W:0.085 / U:0.300 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site