linux-kernel - [PATCH] iommu: export no_iommu and dmar

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: <1322073734-26840-1-git-send-email-eugeni.dodonov@intel.com>
Date:	Wed, 23 Nov 2011 16:42:14 -0200
From:	Eugeni Dodonov <eugeni.dodonov@...el.com>
To:	intel-gfx@...ts.freedesktop.org
Cc:	linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
	Eugeni Dodonov <eugeni.dodonov@...el.com>,
	Keith Packard <keithp@...thp.com>,
	Daniel Vetter <daniel.vetter@...ll.ch>
Subject: [PATCH] iommu: export no_iommu and dmar_disabled symbols

Those are needed by the rc6 and semaphores support in i915 driver.

In i915 driver, we do not enable either rc6 or semaphores on SNB when dmar
is enabled. So we use those variables to check the io remapping and iommu
status.

CC: Keith Packard <keithp@...thp.com>
CC: Daniel Vetter <daniel.vetter@...ll.ch>
Signed-off-by: Eugeni Dodonov <eugeni.dodonov@...el.com>
---
 arch/x86/kernel/pci-dma.c   |    1 +
 drivers/iommu/intel-iommu.c |    1 +
 2 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
index 80dc793..4c9191e 100644
--- a/arch/x86/kernel/pci-dma.c
+++ b/arch/x86/kernel/pci-dma.c
@@ -33,6 +33,7 @@ int force_iommu __read_mostly = 0;
 int iommu_merge __read_mostly = 0;
 
 int no_iommu __read_mostly;
+EXPORT_SYMBOL_GPL(no_iommu);
 /* Set this to 1 if there is a HW IOMMU in the system */
 int iommu_detected __read_mostly = 0;
 
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index c0c7820..dfe5fd3 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -404,6 +404,7 @@ int dmar_disabled = 0;
 #else
 int dmar_disabled = 1;
 #endif /*CONFIG_INTEL_IOMMU_DEFAULT_ON*/
+EXPORT_SYMBOL_GPL(dmar_disabled);
 
 static int dmar_map_gfx = 1;
 static int dmar_forcedac;
-- 
1.7.7.4

--
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/