linux-kernel - [tip:irq/core] irq/platform-MSI: Increase the maximum MSIs the MSI framework can support

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] [day] [month] [year] [list]

Date:	Tue, 29 Dec 2015 03:04:02 -0800
From:	tip-bot for MaJun <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	lizefan@...wei.com, linux-arm-kernel@...ts.infradead.org,
	Will.Deacon@....com, guohanjun@...wei.com, marc.zyngier@....com,
	linux-kernel@...r.kernel.org, majun258@...wei.com, hpa@...or.com,
	huxinwei@...wei.com, mingo@...nel.org, dingtianhong@...wei.com,
	Catalin.Marinas@....com, tglx@...utronix.de,
	liguozhu@...ilicon.com, jason@...edaemon.net, mark.rutland@....com
Subject: [tip:irq/core] irq/platform-MSI:
  Increase the maximum MSIs the MSI framework can support

Commit-ID:  aff5e06b0dda7704ff2fa45162cfc4dde316a6f1
Gitweb:     http://git.kernel.org/tip/aff5e06b0dda7704ff2fa45162cfc4dde316a6f1
Author:     MaJun <majun258@...wei.com>
AuthorDate: Tue, 22 Dec 2015 10:47:22 +0800
Committer:  Thomas Gleixner <tglx@...utronix.de>
CommitDate: Tue, 29 Dec 2015 11:58:53 +0100

irq/platform-MSI: Increase the maximum MSIs the MSI framework can support

The current MSI framework can only support 256 platform MSIs. But on Hisilicon
platform, some network related devices has about 500 wired interrupts.

To support these devices and align with MSI-X increase the maximum to 2048
devices.

Signed-off-by: Ma Jun <majun258@...wei.com>
Cc: <Catalin.Marinas@....com>
Cc: <linux-arm-kernel@...ts.infradead.org>
Cc: <Will.Deacon@....com>
Cc: <mark.rutland@....com>
Cc: <marc.zyngier@....com>
Cc: <jason@...edaemon.net>
Cc: <lizefan@...wei.com>
Cc: <huxinwei@...wei.com>
Cc: <dingtianhong@...wei.com>
Cc: <liguozhu@...ilicon.com>
Cc: <guohanjun@...wei.com>
Link: http://lkml.kernel.org/r/1450752442-9392-1-git-send-email-majun258@huawei.com
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
---
 drivers/base/platform-msi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/base/platform-msi.c b/drivers/base/platform-msi.c
index a203896..47c4338 100644
--- a/drivers/base/platform-msi.c
+++ b/drivers/base/platform-msi.c
@@ -24,7 +24,7 @@
 #include <linux/msi.h>
 #include <linux/slab.h>
 
-#define DEV_ID_SHIFT	24
+#define DEV_ID_SHIFT	21
 #define MAX_DEV_MSIS	(1 << (32 - DEV_ID_SHIFT))
 
 /*
--
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/