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: [v4][PATCH 9/9] xen:vtd: make USB RMRR mapping safe
Date: Fri, 22 Aug 2014 18:09:46 +0800 [thread overview]
Message-ID: <1408702186-24432-10-git-send-email-tiejun.chen@intel.com> (raw)
In-Reply-To: <1408702186-24432-1-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:[~2014-08-22 10:09 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-08-22 10:09 [v4][PATCH 0/9] xen: reserve RMRR to avoid conflicting MMIO/RAM Tiejun Chen
2014-08-22 10:09 ` [v4][PATCH 1/9] xen:vtd:rmrr: export acpi_rmrr_units Tiejun Chen
2014-08-22 10:09 ` [v4][PATCH 2/9] xen:x86: define a new hypercall to get RMRR mappings Tiejun Chen
2014-08-22 10:53 ` Andrew Cooper
2014-08-22 11:36 ` Jan Beulich
2014-08-25 11:03 ` Chen, Tiejun
2014-08-25 11:21 ` Chen, Tiejun
2014-08-25 12:07 ` Andrew Cooper
2014-08-26 3:12 ` Chen, Tiejun
2014-08-26 9:25 ` Andrew Cooper
2014-08-22 10:09 ` [v4][PATCH 3/9] tools:libxc: introduce hypercall for xc_reserved_device_memory_map Tiejun Chen
2014-08-22 10:55 ` Andrew Cooper
2014-08-25 11:11 ` Chen, Tiejun
2014-08-25 11:58 ` Andrew Cooper
2014-08-22 10:09 ` [v4][PATCH 4/9] tools:libxc: check if mmio BAR is out of RMRR mappings Tiejun Chen
2014-08-26 20:36 ` Ian Campbell
2014-08-27 1:46 ` Chen, Tiejun
2014-08-27 2:20 ` Ian Campbell
2014-08-27 2:40 ` Chen, Tiejun
2014-08-27 2:47 ` Chen, Tiejun
2014-08-22 10:09 ` [v4][PATCH 5/9] hvm_info_table: introduce nr_reserved_device_memory_map Tiejun Chen
2014-08-26 20:38 ` Ian Campbell
2014-08-27 1:54 ` Chen, Tiejun
2014-08-27 1:57 ` Chen, Tiejun
2014-08-27 2:21 ` Ian Campbell
2014-08-27 2:28 ` Chen, Tiejun
2014-08-22 10:09 ` [v4][PATCH 6/9] xen:x86:: support xc_reserved_device_memory_map in compat case Tiejun Chen
2014-08-22 10:09 ` [v4][PATCH 7/9] tools:firmware:hvmloader: introduce hypercall for xc_reserved_device_memory_map Tiejun Chen
2014-08-22 10:09 ` [v4][PATCH 8/9] tools:firmware:hvmloader: check to reserve RMRR mappings in e820 Tiejun Chen
2014-08-22 10:09 ` Tiejun Chen [this message]
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