From: Tiejun Chen <tiejun.chen@intel.com>
To: JBeulich@suse.com, ian.jackson@eu.citrix.com,
stefano.stabellini@eu.citrix.com, ian.campbell@citrix.com,
yang.z.zhang@intel.com, kevin.tian@intel.com
Cc: xen-devel@lists.xen.org
Subject: [RFC][v3][PATCH 6/6] xen:vtd: make USB RMRR mapping safe
Date: Fri, 15 Aug 2014 16:27:18 +0800 [thread overview]
Message-ID: <1408091238-18364-7-git-send-email-tiejun.chen@intel.com> (raw)
In-Reply-To: <1408091238-18364-1-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>
---
xen/drivers/passthrough/vtd/iommu.c | 8 --------
1 file changed, 8 deletions(-)
diff --git a/xen/drivers/passthrough/vtd/iommu.c b/xen/drivers/passthrough/vtd/iommu.c
index 042b882..319ae05 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
prev parent reply other threads:[~2014-08-15 8:27 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-08-15 8:27 [RFC][v3][PATCH 0/6] xen: reserve RMRR to avoid conflicting MMIO/RAM Tiejun Chen
2014-08-15 8:27 ` [RFC][v3][PATCH 1/6] xen:x86: record RMRR mappings Tiejun Chen
2014-08-15 9:39 ` Andrew Cooper
2014-08-15 16:29 ` Jan Beulich
2014-08-18 7:42 ` Chen, Tiejun
2014-08-18 9:57 ` Andrew Cooper
2014-08-18 10:05 ` Chen, Tiejun
2014-08-18 12:31 ` Jan Beulich
2014-08-19 2:14 ` Chen, Tiejun
2014-08-19 2:28 ` Chen, Tiejun
2014-08-19 13:12 ` Jan Beulich
2014-08-18 7:45 ` Chen, Tiejun
2014-08-18 9:51 ` Andrew Cooper
2014-08-18 10:01 ` Chen, Tiejun
2014-08-18 12:56 ` Jan Beulich
2014-08-15 8:27 ` [RFC][v3][PATCH 2/6] xen:x86: introduce a new hypercall to get " Tiejun Chen
2014-08-15 9:46 ` Andrew Cooper
2014-08-18 7:46 ` Chen, Tiejun
2014-08-15 8:27 ` [RFC][v3][PATCH 3/6] tools:firmware:hvmloader: reserve RMRR mappings in e820 Tiejun Chen
2014-08-15 9:58 ` Andrew Cooper
2014-08-18 7:51 ` Chen, Tiejun
2014-08-18 10:00 ` Andrew Cooper
2014-08-15 8:27 ` [RFC][v3][PATCH 4/6] xen:x86: add XENMEM_reserved_device_memory_map to expose RMRR Tiejun Chen
2014-08-15 12:15 ` Andrew Cooper
2014-08-18 8:00 ` Chen, Tiejun
2014-08-18 10:06 ` Andrew Cooper
2014-08-15 8:27 ` [RFC][v3][PATCH 5/6] tools:libxc: check if mmio BAR is out of RMRR mappings Tiejun Chen
2014-08-15 12:21 ` Andrew Cooper
2014-08-18 8:05 ` Chen, Tiejun
2014-08-15 8:27 ` Tiejun Chen [this message]
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