diff options
Diffstat (limited to 'kernels/linux-libre-knock/0001-quirk-asm_volatile_goto.patch')
| -rw-r--r-- | kernels/linux-libre-knock/0001-quirk-asm_volatile_goto.patch | 51 |
1 files changed, 0 insertions, 51 deletions
diff --git a/kernels/linux-libre-knock/0001-quirk-asm_volatile_goto.patch b/kernels/linux-libre-knock/0001-quirk-asm_volatile_goto.patch deleted file mode 100644 index c9ee40400..000000000 --- a/kernels/linux-libre-knock/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 |