linux-kernel - [tip:x86/apic] iommu, x86: Add cap_pi_support() to detect VT-d PI capability

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, 8 Jun 2015 06:44:54 -0700
From:	tip-bot for Feng Wu <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	mingo@...nel.org, hpa@...or.com, David.Woodhouse@...el.com,
	tglx@...utronix.de, joro@...tes.org, feng.wu@...el.com,
	jiang.liu@...ux.intel.com, linux-kernel@...r.kernel.org
Subject: [tip:x86/apic] iommu, x86: Add cap_pi_support()
  to detect VT-d PI capability

Commit-ID:  948f4ea26d44a64e315225299155af82e213ebed
Gitweb:     http://git.kernel.org/tip/948f4ea26d44a64e315225299155af82e213ebed
Author:     Feng Wu <feng.wu@...el.com>
AuthorDate: Fri, 5 Jun 2015 13:42:51 +0800
Committer:  Thomas Gleixner <tglx@...utronix.de>
CommitDate: Mon, 8 Jun 2015 15:41:32 +0200

iommu, x86: Add cap_pi_support() to detect VT-d PI capability

Add helper function to detect VT-d Posted-Interrupts capability.

Signed-off-by: Feng Wu <feng.wu@...el.com>
Reviewed-by: Jiang Liu <jiang.liu@...ux.intel.com>
Acked-by: David Woodhouse <David.Woodhouse@...el.com>
Acked-by: Joerg Roedel <joro@...tes.org>
Cc: iommu@...ts.linux-foundation.org
Cc: dwmw2@...radead.org
Link: http://lkml.kernel.org/r/1433482974-14614-7-git-send-email-feng.wu@intel.com
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
---
 include/linux/intel-iommu.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/linux/intel-iommu.h b/include/linux/intel-iommu.h
index 0af9b03..0c251be 100644
--- a/include/linux/intel-iommu.h
+++ b/include/linux/intel-iommu.h
@@ -87,6 +87,7 @@ static inline void dmar_writeq(void __iomem *addr, u64 val)
 /*
  * Decoding Capability Register
  */
+#define cap_pi_support(c)	(((c) >> 59) & 1)
 #define cap_read_drain(c)	(((c) >> 55) & 1)
 #define cap_write_drain(c)	(((c) >> 54) & 1)
 #define cap_max_amask_val(c)	(((c) >> 48) & 0x3f)
--
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/