linux-kernel - RE: [PATCH v3 2/2] x86, mce: support memory error recovery for both UCNA and Deferred error in machine_check

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Mon, 10 Nov 2014 21:44:26 +0000
From:	"Luck, Tony" <tony.luck@...el.com>
To:	Borislav Petkov <bp@...en8.de>, Chen Yucong <slaoub@...il.com>
CC:	"ak@...ux.intel.com" <ak@...ux.intel.com>,
	"aravind.gopalakrishnan@....com" <aravind.gopalakrishnan@....com>,
	"linux-edac@...r.kernel.org" <linux-edac@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH v3 2/2] x86, mce: support memory error recovery for both
 UCNA and Deferred error in machine_check_poll

> In fact, you could redo this patch in the meantime without the AMD vendor
> check so that Tony can pick them up soon. I'll add the correct AMD bits
> later.

You just want this hunk deleted ...

+	if (c->x86_vendor == X86_VENDOR_AMD) {
+		/*
+		 * AMD BKDGs - Machine Check Error Codes
+		 *
+		 * Bit 8 of ErrCode[15:0] of MCi_STATUS is used for indicating
+		 * a memory-specific error. Note that this field encodes info-
+		 * rmation about memory-hierarchy level involved in the error.
+		 */
+		return (m->status & 0xff00) == BIT(8);
+	} else

I can do that without a repost.  Or I can leave a reminder ...

+	if (c->x86_vendor == X86_VENDOR_AMD) {
+		/*
+		 * coming soon
+		 */
+		return false;
+	} else

-Tony