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From: Ingo Molnar <mingo@kernel.org>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: linux-kernel@vger.kernel.org,
	Thomas Gleixner <tglx@linutronix.de>,
	"H. Peter Anvin" <hpa@zytor.com>, Borislav Petkov <bp@alien8.de>,
	Peter Zijlstra <a.p.zijlstra@chello.nl>,
	Andrew Morton <akpm@linux-foundation.org>
Subject: [GIT PULL] RAS update for v4.14
Date: Mon, 4 Sep 2017 09:20:33 +0200	[thread overview]
Message-ID: <20170904072033.rvifhj5eepz3yj4q@gmail.com> (raw)

Linus,

Please pull the latest ras-core-for-linus git tree from:

   git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git ras-core-for-linus

   # HEAD: 9662d43f523dfc0dc242ec29c2921c43898d6ae5 x86/mce/AMD: Allow any CPU to initialize the smca_banks array

A single change fixing SMCA bank initialization on systems that don't have CPU0 
enabled.

 Thanks,

	Ingo

------------------>
Yazen Ghannam (1):
      x86/mce/AMD: Allow any CPU to initialize the smca_banks array


 arch/x86/kernel/cpu/mcheck/mce_amd.c | 9 ++-------
 1 file changed, 2 insertions(+), 7 deletions(-)

diff --git a/arch/x86/kernel/cpu/mcheck/mce_amd.c b/arch/x86/kernel/cpu/mcheck/mce_amd.c
index 9e314bcf67cc..5ce1a5689162 100644
--- a/arch/x86/kernel/cpu/mcheck/mce_amd.c
+++ b/arch/x86/kernel/cpu/mcheck/mce_amd.c
@@ -201,8 +201,8 @@ static void smca_configure(unsigned int bank, unsigned int cpu)
 		wrmsr(smca_config, low, high);
 	}
 
-	/* Collect bank_info using CPU 0 for now. */
-	if (cpu)
+	/* Return early if this bank was already initialized. */
+	if (smca_banks[bank].hwid)
 		return;
 
 	if (rdmsr_safe_on_cpu(cpu, MSR_AMD64_SMCA_MCx_IPID(bank), &low, &high)) {
@@ -216,11 +216,6 @@ static void smca_configure(unsigned int bank, unsigned int cpu)
 	for (i = 0; i < ARRAY_SIZE(smca_hwid_mcatypes); i++) {
 		s_hwid = &smca_hwid_mcatypes[i];
 		if (hwid_mcatype == s_hwid->hwid_mcatype) {
-
-			WARN(smca_banks[bank].hwid,
-			     "Bank %s already initialized!\n",
-			     smca_get_name(s_hwid->bank_type));
-
 			smca_banks[bank].hwid = s_hwid;
 			smca_banks[bank].id = low;
 			smca_banks[bank].sysfs_id = s_hwid->count++;

                 reply	other threads:[~2017-09-04  7:20 UTC|newest]

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