linux-kernel - [PATCH 4.2 066/134] cxl: Dont remove AFUs/vPHBs in cxl

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:	Sat, 26 Sep 2015 13:55:18 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Cyril Bur <cyrilbur@...il.com>,
	Daniel Axtens <dja@...ens.net>,
	Michael Ellerman <mpe@...erman.id.au>
Subject: [PATCH 4.2 066/134] cxl: Dont remove AFUs/vPHBs in cxl_reset

4.2-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Daniel Axtens <dja@...ens.net>

commit 4e1efb403c1c016ae831bd9988a7d2e5e0af41a0 upstream.

If the driver doesn't participate in EEH, the AFUs will be removed
by cxl_remove, which will be invoked by EEH.

If the driver does particpate in EEH, the vPHB needs to stick around
so that the it can particpate.

In both cases, we shouldn't remove the AFU/vPHB.

Reviewed-by: Cyril Bur <cyrilbur@...il.com>
Signed-off-by: Daniel Axtens <dja@...ens.net>
Signed-off-by: Michael Ellerman <mpe@...erman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/misc/cxl/pci.c |    5 -----
 1 file changed, 5 deletions(-)

--- a/drivers/misc/cxl/pci.c
+++ b/drivers/misc/cxl/pci.c
@@ -854,11 +854,6 @@ int cxl_reset(struct cxl *adapter)
 
 	dev_info(&dev->dev, "CXL reset\n");
 
-	for (i = 0; i < adapter->slices; i++) {
-		cxl_pci_vphb_remove(adapter->afu[i]);
-		cxl_remove_afu(adapter->afu[i]);
-	}
-
 	/* pcie_warm_reset requests a fundamental pci reset which includes a
 	 * PERST assert/deassert.  PERST triggers a loading of the image
 	 * if "user" or "factory" is selected in sysfs */


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/