summaryrefslogtreecommitdiff
path: root/kernels/linux-libre-grsec/0001-quirk-asm_volatile_goto.patch
diff options
context:
space:
mode:
authorDrtan Samos <lashdu@drtan.twilightparadox.com>2014-03-03 18:49:15 +0100
committerDrtan Samos <lashdu@drtan.twilightparadox.com>2014-03-03 18:49:15 +0100
commit926e54e67433d33d75b19b21544c5b8303389aa0 (patch)
tree6177f2e93611ffba8ef822da12850bf3565d7766 /kernels/linux-libre-grsec/0001-quirk-asm_volatile_goto.patch
parentc850156e865805296b73eee01caa4b4469191437 (diff)
parent535ef7c5859bc88ca3a0d382261632ec8d8df066 (diff)
downloadabslibre-926e54e67433d33d75b19b21544c5b8303389aa0.tar.gz
abslibre-926e54e67433d33d75b19b21544c5b8303389aa0.tar.bz2
abslibre-926e54e67433d33d75b19b21544c5b8303389aa0.zip
Merge branch 'master' of git://projects.parabolagnulinux.org/abslibre
Diffstat (limited to 'kernels/linux-libre-grsec/0001-quirk-asm_volatile_goto.patch')
-rw-r--r--kernels/linux-libre-grsec/0001-quirk-asm_volatile_goto.patch51
1 files changed, 0 insertions, 51 deletions
diff --git a/kernels/linux-libre-grsec/0001-quirk-asm_volatile_goto.patch b/kernels/linux-libre-grsec/0001-quirk-asm_volatile_goto.patch
deleted file mode 100644
index c9ee40400..000000000
--- a/kernels/linux-libre-grsec/0001-quirk-asm_volatile_goto.patch
+++ /dev/null
@@ -1,51 +0,0 @@
-From a9f180345f5378ac87d80ed0bea55ba421d83859 Mon Sep 17 00:00:00 2001
-From: Steven Noonan <steven@uplinklabs.net>
-Date: Thu, 13 Feb 2014 07:01:07 +0000
-Subject: compiler/gcc4: Make quirk for asm_volatile_goto() unconditional
-
-I started noticing problems with KVM guest destruction on Linux
-3.12+, where guest memory wasn't being cleaned up. I bisected it
-down to the commit introducing the new 'asm goto'-based atomics,
-and found this quirk was later applied to those.
-
-Unfortunately, even with GCC 4.8.2 (which ostensibly fixed the
-known 'asm goto' bug) I am still getting some kind of
-miscompilation. If I enable the asm_volatile_goto quirk for my
-compiler, KVM guests are destroyed correctly and the memory is
-cleaned up.
-
-So make the quirk unconditional for now, until bug is found
-and fixed.
-
-Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
-Signed-off-by: Steven Noonan <steven@uplinklabs.net>
-Cc: Peter Zijlstra <peterz@infradead.org>
-Cc: Steven Rostedt <rostedt@goodmis.org>
-Cc: Jakub Jelinek <jakub@redhat.com>
-Cc: Richard Henderson <rth@twiddle.net>
-Cc: Andrew Morton <akpm@linux-foundation.org>
-Cc: Oleg Nesterov <oleg@redhat.com>
-Cc: <stable@vger.kernel.org>
-Link: http://lkml.kernel.org/r/1392274867-15236-1-git-send-email-steven@uplinklabs.net
-Link: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58670
-Signed-off-by: Ingo Molnar <mingo@kernel.org>
----
-diff --git a/include/linux/compiler-gcc4.h b/include/linux/compiler-gcc4.h
-index ded4299..2507fd2 100644
---- a/include/linux/compiler-gcc4.h
-+++ b/include/linux/compiler-gcc4.h
-@@ -75,11 +75,7 @@
- *
- * (asm goto is automatically volatile - the naming reflects this.)
- */
--#if GCC_VERSION <= 40801
--# define asm_volatile_goto(x...) do { asm goto(x); asm (""); } while (0)
--#else
--# define asm_volatile_goto(x...) do { asm goto(x); } while (0)
--#endif
-+#define asm_volatile_goto(x...) do { asm goto(x); asm (""); } while (0)
-
- #ifdef CONFIG_ARCH_USE_BUILTIN_BSWAP
- #if GCC_VERSION >= 40400
---
-cgit v0.9.2