From: "Jan Beulich" <JBeulich@suse.com>
To: xen-devel <xen-devel@lists.xenproject.org>
Cc: Kevin Tian <kevin.tian@intel.com>
Subject: [PATCH] VT-d: suppress individual flushes during hwdom setup
Date: Thu, 02 May 2019 06:28:06 -0600 [thread overview]
Message-ID: <5CCAE256020000780022B35B@prv1-mh.provo.novell.com> (raw)
There's an invocation of iommu_flush_all() immediately afterwards.
Signed-off-by: Jan Beulich <jbeulich@suse.com>
--- a/xen/drivers/passthrough/vtd/iommu.c
+++ b/xen/drivers/passthrough/vtd/iommu.c
@@ -1310,8 +1310,11 @@ static void __hwdom_init intel_iommu_hwd
setup_hwdom_pci_devices(d, setup_hwdom_device);
setup_hwdom_rmrr(d);
+
/* Make sure workarounds are applied before enabling the IOMMU(s). */
+ this_cpu(iommu_dont_flush_iotlb) = true;
arch_iommu_hwdom_init(d);
+ this_cpu(iommu_dont_flush_iotlb) = false;
if ( iommu_flush_all() )
printk(XENLOG_WARNING VTDPREFIX
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WARNING: multiple messages have this Message-ID (diff)
From: "Jan Beulich" <JBeulich@suse.com>
To: "xen-devel" <xen-devel@lists.xenproject.org>
Cc: Kevin Tian <kevin.tian@intel.com>
Subject: [Xen-devel] [PATCH] VT-d: suppress individual flushes during hwdom setup
Date: Thu, 02 May 2019 06:28:06 -0600 [thread overview]
Message-ID: <5CCAE256020000780022B35B@prv1-mh.provo.novell.com> (raw)
Message-ID: <20190502122806.PXAJSfZyaWpdc2hCdlhK-jK10c3rxzJa2bbZEu2fS9o@z> (raw)
There's an invocation of iommu_flush_all() immediately afterwards.
Signed-off-by: Jan Beulich <jbeulich@suse.com>
--- a/xen/drivers/passthrough/vtd/iommu.c
+++ b/xen/drivers/passthrough/vtd/iommu.c
@@ -1310,8 +1310,11 @@ static void __hwdom_init intel_iommu_hwd
setup_hwdom_pci_devices(d, setup_hwdom_device);
setup_hwdom_rmrr(d);
+
/* Make sure workarounds are applied before enabling the IOMMU(s). */
+ this_cpu(iommu_dont_flush_iotlb) = true;
arch_iommu_hwdom_init(d);
+ this_cpu(iommu_dont_flush_iotlb) = false;
if ( iommu_flush_all() )
printk(XENLOG_WARNING VTDPREFIX
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xenproject.org
https://lists.xenproject.org/mailman/listinfo/xen-devel
next reply other threads:[~2019-05-02 12:28 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-02 12:28 Jan Beulich [this message]
2019-05-02 12:28 ` [Xen-devel] [PATCH] VT-d: suppress individual flushes during hwdom setup Jan Beulich
2019-05-02 13:08 ` Roger Pau Monné
2019-05-02 13:08 ` [Xen-devel] " Roger Pau Monné
2019-05-02 13:35 ` Jan Beulich
2019-05-02 13:35 ` [Xen-devel] " Jan Beulich
2019-05-02 13:12 ` Paul Durrant
2019-05-02 13:12 ` [Xen-devel] " Paul Durrant
2019-05-02 13:41 ` Jan Beulich
2019-05-02 13:41 ` [Xen-devel] " Jan Beulich
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