From: Tiejun Chen <tiejun.chen@intel.com>
To: JBeulich@suse.com, ian.campbell@citrix.com,
ian.jackson@eu.citrix.com, stefano.stabellini@eu.citrix.com,
kevin.tian@intel.com, yang.z.zhang@intel.com
Cc: xen-devel@lists.xen.org
Subject: [v6][PATCH 7/7] xen/vtd: make USB RMRR mapping safe
Date: Wed, 10 Sep 2014 13:49:50 +0800 [thread overview]
Message-ID: <1410328190-6372-8-git-send-email-tiejun.chen@intel.com> (raw)
In-Reply-To: <1410328190-6372-1-git-send-email-tiejun.chen@intel.com>
We already reserve all RMRR mappings so USB should be safe with
RMRR.
Signed-off-by: Tiejun Chen <tiejun.chen@intel.com>
diff --git a/xen/drivers/passthrough/vtd/iommu.c b/xen/drivers/passthrough/vtd/iommu.c
index d513dba..ea5d343 100644
--- a/xen/drivers/passthrough/vtd/iommu.c
+++ b/xen/drivers/passthrough/vtd/iommu.c
@@ -2273,16 +2273,8 @@ static int intel_iommu_assign_device(
if ( ret )
goto done;
- /* FIXME: Because USB RMRR conflicts with guest bios region,
- * ignore USB RMRR temporarily.
- */
seg = pdev->seg;
bus = pdev->bus;
- if ( is_usb_device(seg, bus, pdev->devfn) )
- {
- ret = 0;
- goto done;
- }
/* Setup rmrr identity mapping */
for_each_rmrr_device( rmrr, bdf, i )
--
1.9.1
next prev parent reply other threads:[~2014-09-10 5:49 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-10 5:49 [v6][PATCH 0/7] xen: reserve RMRR to avoid conflicting MMIO/RAM Tiejun Chen
2014-09-10 5:49 ` [v6][PATCH 1/7] introduce XENMEM_reserved_device_memory_map Tiejun Chen
2014-09-10 21:34 ` Tian, Kevin
2014-09-10 5:49 ` [v6][PATCH 2/7] tools/libxc: introduce hypercall for xc_reserved_device_memory_map Tiejun Chen
2014-09-11 15:21 ` Jan Beulich
2014-09-11 15:23 ` Ian Campbell
2014-09-11 15:55 ` Andrew Cooper
2014-09-12 2:43 ` Chen, Tiejun
2014-09-12 6:20 ` Jan Beulich
2014-09-10 5:49 ` [v6][PATCH 3/7] tools/libxc: check if mmio BAR is out of reserved device memory maps Tiejun Chen
2014-09-10 21:37 ` Tian, Kevin
2014-09-11 1:14 ` Chen, Tiejun
2014-09-11 22:55 ` Tian, Kevin
2014-09-11 15:38 ` Jan Beulich
2014-09-12 2:56 ` Chen, Tiejun
2014-09-12 6:19 ` Jan Beulich
2014-09-10 5:49 ` [v6][PATCH 4/7] libxc/hvm_info_table: introduce a new field nr_reserved_device_memory_map Tiejun Chen
2014-09-10 21:39 ` Tian, Kevin
2014-09-11 1:16 ` Chen, Tiejun
2014-09-10 5:49 ` [v6][PATCH 5/7] hvmloader: introduce hypercall for xc_reserved_device_memory_map Tiejun Chen
2014-09-10 21:41 ` Tian, Kevin
2014-09-11 1:32 ` Chen, Tiejun
2014-09-11 7:52 ` Jan Beulich
2014-09-11 15:45 ` Jan Beulich
2014-09-12 4:52 ` Chen, Tiejun
2014-09-10 5:49 ` [v6][PATCH 6/7] hvmloader: check to reserved device memory maps in e820 Tiejun Chen
2014-09-11 15:57 ` Jan Beulich
2014-09-12 6:08 ` Jan Beulich
2014-09-12 6:28 ` Chen, Tiejun
2014-09-12 6:44 ` Jan Beulich
2014-09-10 5:49 ` Tiejun Chen [this message]
2014-09-18 9:11 ` [v6][PATCH 7/7] xen/vtd: make USB RMRR mapping safe Jan Beulich
2014-09-10 21:44 ` [v6][PATCH 0/7] xen: reserve RMRR to avoid conflicting MMIO/RAM Tian, Kevin
2014-09-11 1:38 ` Chen, Tiejun
2014-09-11 7:48 ` Jan Beulich
2014-09-11 9:39 ` Chen, Tiejun
2014-09-11 10:01 ` Jan Beulich
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