linux-kernel - Re: linux-next: manual merge of the akpm tree with the tip tree

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Date:	Thu, 9 Apr 2015 07:57:11 +1000
From:	Stephen Rothwell <sfr@...b.auug.org.au>
To:	Ingo Molnar <mingo@...nel.org>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...e.hu>, "H. Peter Anvin" <hpa@...or.com>,
	Peter Zijlstra <peterz@...radead.org>,
	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
	Borislav Petkov <bp@...en8.de>
Subject: Re: linux-next: manual merge of the akpm tree with the tip tree

Hi Ingo,

On Wed, 8 Apr 2015 17:13:51 +0200 Ingo Molnar <mingo@...nel.org> wrote:
>
> 
> * Stephen Rothwell <sfr@...b.auug.org.au> wrote:
> 
> > Today's linux-next merge of the akpm tree got a conflict in
> > arch/x86/kernel/cpu/common.c between commit 6b51311c9765
> > ("x86/asm/entry/64: Use a define for an invalid segment selector") from
> > the tip tree and commit f28c11e4b695 ("arch/x86/kernel/cpu/common.c:
> > fix warning") from the akpm tree.
> 
> So f28c11e4b695 doesn't appear to be in linux-next as fetched a minute 
> ago:
> 
>  triton:~/linux.trees.git> git log f28c11e4b695 --
>  fatal: bad revision 'f28c11e4b695'
>  triton:~/linux.trees.git> git describe
>  next-20150408
> 
> How am I supposed to fetch and interpret such sha1's?

Sorry, this was a special case.  This was a patch in the part of
Andrew's series that gets rebased on top of the rest of linux-next each
day (as that part has dependencies on other things in linux-next).  In
this case, the resolution was to drop the patch entirely as it had
become unnecessary.

This was it:

From: Andrew Morton <akpm@...ux-foundation.org>
Subject: arch/x86/kernel/cpu/common.c: fix warning

x86_64 allnoconfig:

arch/x86/kernel/cpu/common.c: In function 'syscall_init':
arch/x86/kernel/cpu/common.c:1225: warning: right shift count >= width of type

Fixes: a76c7f4604937bc ("x86/asm/entry/64: Fold syscall32_cpu_init() into its sole user")
Cc: Denys Vlasenko <dvlasenk@...hat.com>
Cc: Andy Lutomirski <luto@...capital.net>
Cc: H. Peter Anvin <hpa@...or.com>
Cc: Ingo Molnar <mingo@...nel.org>
Signed-off-by: Andrew Morton <akpm@...ux-foundation.org>
---

 arch/x86/kernel/cpu/common.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff -puN arch/x86/kernel/cpu/common.c~arch-x86-kernel-cpu-commonc-fix-warning arch/x86/kernel/cpu/common.c
--- a/arch/x86/kernel/cpu/common.c~arch-x86-kernel-cpu-commonc-fix-warning
+++ a/arch/x86/kernel/cpu/common.c
@@ -1222,7 +1222,7 @@ void syscall_init(void)
 	wrmsrl_safe(MSR_IA32_SYSENTER_EIP, (u64)ia32_sysenter_target);
 #else
 	wrmsrl(MSR_CSTAR, ignore_sysret);
-	wrmsrl_safe(MSR_IA32_SYSENTER_CS, 0);
+	wrmsrl_safe(MSR_IA32_SYSENTER_CS, 0ULL);
 	wrmsrl_safe(MSR_IA32_SYSENTER_ESP, 0ULL);
 	wrmsrl_safe(MSR_IA32_SYSENTER_EIP, 0ULL);
 #endif
_

-- 
Cheers,
Stephen Rothwell                    sfr@...b.auug.org.au

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