The patch titled
x86: fix the x86_64 implementation of call_rwsem_wait()
has been added to the -mm tree. Its filename is
x86-fix-the-x86_64-implementation-of-call_rwsem_wait.patch
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://userweb.kernel.org/~akpm/stuff/added-to-mm.txt to find
out what to do about this
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: x86: fix the x86_64 implementation of call_rwsem_wait()
From: David Howells <dhowells@xxxxxxxxxx>
The x86_64 call_rwsem_wait() treats the active state counter part of the
R/W semaphore state as being 16-bit when it's actually 32-bit (it's half
of the 64-bit state). It should do "decl %edx" not "decw %dx".
Signed-off-by: David Howells <dhowells@xxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: "H. Peter Anvin" <hpa@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/x86/lib/rwsem_64.S | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN arch/x86/lib/rwsem_64.S~x86-fix-the-x86_64-implementation-of-call_rwsem_wait arch/x86/lib/rwsem_64.S
--- a/arch/x86/lib/rwsem_64.S~x86-fix-the-x86_64-implementation-of-call_rwsem_wait
+++ a/arch/x86/lib/rwsem_64.S
@@ -60,7 +60,7 @@ ENTRY(call_rwsem_down_write_failed)
ENDPROC(call_rwsem_down_write_failed)
ENTRY(call_rwsem_wake)
- decw %dx /* do nothing if still outstanding active readers */
+ decl %edx /* do nothing if still outstanding active readers */
jnz 1f
save_common_regs
movq %rax,%rdi
_
Patches currently in -mm which might be from dhowells@xxxxxxxxxx are
origin.patch
linux-next.patch
x86-fix-the-x86_64-implementation-of-call_rwsem_wait.patch
fs-fscache-object-listc-fix-warning-on-32-bit.patch
frv-extend-gdbstub-to-support-more-features-of-gdb.patch
frv-extend-gdbstub-to-support-more-features-of-gdb-fix.patch
frv-duplicate-output_buffer-of-e03.patch
nommu-allow-private-mappings-of-read-only-devices.patch
mn10300-use-generic-atomich.patch
umh-creds-convert-call_usermodehelper_keys-to-use-subprocess_info-init.patch
umh-creds-kill-subprocess_info-cred-logic.patch
coredump-factor-out-the-not-ispipe-file-checks.patch
coredump-cleanup-ispipe-code.patch
coredump-factor-out-put_cred-calls.patch
coredump-shift-down_writemmap_sem-into-coredump_wait.patch
proc-get_nr_threads-doesnt-need-siglock-any-longer.patch
proc_sched_show_task-use-get_nr_threads.patch
keyctl_session_to_parent-use-thread_group_empty-to-check-singlethreadness.patch
frv-use-asm-generic-scatterlisth.patch
mn10300-use-asm-generic-scatterlisth.patch
frv-remove-struct-file-argument-from-sysctl-proc_handler.patch
mutex-subsystem-synchro-test-module.patch
mutex-subsystem-synchro-test-module-add-missing-header-file.patch
--
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
