[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-Id: <20180129123847.578496255@linuxfoundation.org>
Date: Mon, 29 Jan 2018 13:56:06 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org,
One Thousand Gnomes <gnomes@...rguk.ukuu.org.uk>,
Andy Lutomirski <luto@...nel.org>,
Juergen Gross <jgross@...e.com>,
Peter Zijlstra <peterz@...radead.org>,
Brian Gerst <brgerst@...il.com>,
Matthew Whitehead <tedheadster@...il.com>,
Borislav Petkov <bp@...en8.de>,
Henrique de Moraes Holschuh <hmh@....eng.br>,
Andrew Cooper <andrew.cooper3@...rix.com>,
Boris Ostrovsky <boris.ostrovsky@...cle.com>,
xen-devel <Xen-devel@...ts.xen.org>,
Thomas Gleixner <tglx@...utronix.de>,
"Zhang, Ning A" <ning.a.zhang@...el.com>
Subject: [PATCH 4.4 01/74] x86/asm/32: Make sync_core() handle missing CPUID on all 32-bit kernels
4.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Andy Lutomirski <luto@...nel.org>
commit 1c52d859cb2d417e7216d3e56bb7fea88444cec9 upstream.
We support various non-Intel CPUs that don't have the CPUID
instruction, so the M486 test was wrong. For now, fix it with a big
hammer: handle missing CPUID on all 32-bit CPUs.
Reported-by: One Thousand Gnomes <gnomes@...rguk.ukuu.org.uk>
Signed-off-by: Andy Lutomirski <luto@...nel.org>
Cc: Juergen Gross <jgross@...e.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Brian Gerst <brgerst@...il.com>
Cc: Matthew Whitehead <tedheadster@...il.com>
Cc: Borislav Petkov <bp@...en8.de>
Cc: Henrique de Moraes Holschuh <hmh@....eng.br>
Cc: Andrew Cooper <andrew.cooper3@...rix.com>
Cc: Boris Ostrovsky <boris.ostrovsky@...cle.com>
Cc: xen-devel <Xen-devel@...ts.xen.org>
Link: http://lkml.kernel.org/r/685bd083a7c036f7769510b6846315b17d6ba71f.1481307769.git.luto@kernel.org
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Cc: "Zhang, Ning A" <ning.a.zhang@...el.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
arch/x86/include/asm/processor.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/x86/include/asm/processor.h
+++ b/arch/x86/include/asm/processor.h
@@ -574,7 +574,7 @@ static inline void sync_core(void)
{
int tmp;
-#ifdef CONFIG_M486
+#ifdef CONFIG_X86_32
/*
* Do a CPUID if available, otherwise do a jump. The jump
* can conveniently enough be the jump around CPUID.
Powered by blists - more mailing lists