linux-kernel - [PATCH v2 04/25] cxl/pci: Delay event buffer allocation

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]

Message-Id: <20240816-dcd-type2-upstream-v2-4-20189a10ad7d@intel.com>
Date: Fri, 16 Aug 2024 08:59:52 -0500
From: Ira Weiny <ira.weiny@...el.com>
To: Dave Jiang <dave.jiang@...el.com>, Fan Ni <fan.ni@...sung.com>, 
 Jonathan Cameron <Jonathan.Cameron@...wei.com>, 
 Navneet Singh <navneet.singh@...el.com>
Cc: Dan Williams <dan.j.williams@...el.com>, 
 Davidlohr Bueso <dave@...olabs.net>, 
 Alison Schofield <alison.schofield@...el.com>, 
 Vishal Verma <vishal.l.verma@...el.com>, Ira Weiny <ira.weiny@...el.com>, 
 linux-btrfs@...r.kernel.org, linux-cxl@...r.kernel.org, 
 linux-kernel@...r.kernel.org
Subject: [PATCH v2 04/25] cxl/pci: Delay event buffer allocation

The event buffer does not need to be allocated if something has failed in
setting up event irq's.

In prep for adjusting event configuration for DCD events move the buffer
allocation to the end of the event configuration.

Reviewed-by: Davidlohr Bueso <dave@...olabs.net>
Reviewed-by: Dave Jiang <dave.jiang@...el.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@...wei.com>
Signed-off-by: Ira Weiny <ira.weiny@...el.com>

---
Changes:
[iweiny: keep tags for early simple patch]
[Davidlohr, Jonathan, djiang: move to beginning of series]
	[Dave feel free to pick this up if you like]
---
 drivers/cxl/pci.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/cxl/pci.c b/drivers/cxl/pci.c
index 4be35dc22202..3a60cd66263e 100644
--- a/drivers/cxl/pci.c
+++ b/drivers/cxl/pci.c
@@ -760,10 +760,6 @@ static int cxl_event_config(struct pci_host_bridge *host_bridge,
 		return 0;
 	}
 
-	rc = cxl_mem_alloc_event_buf(mds);
-	if (rc)
-		return rc;
-
 	rc = cxl_event_get_int_policy(mds, &policy);
 	if (rc)
 		return rc;
@@ -777,6 +773,10 @@ static int cxl_event_config(struct pci_host_bridge *host_bridge,
 		return -EBUSY;
 	}
 
+	rc = cxl_mem_alloc_event_buf(mds);
+	if (rc)
+		return rc;
+
 	rc = cxl_event_irqsetup(mds);
 	if (rc)
 		return rc;

-- 
2.45.2