From: Feng Wu <feng.wu-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
To: dwmw2-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org,
joro-zLv9SwRftAIdnm+yROfE0A@public.gmane.org
Cc: iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org,
jiang.liu-VuQAYsv1563Yd54FQh9/CA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: [v4 8/8] iommu, x86: Properly handler PI for IOMMU hotplug
Date: Mon, 2 Feb 2015 16:07:04 +0800 [thread overview]
Message-ID: <1422864424-19411-9-git-send-email-feng.wu@intel.com> (raw)
In-Reply-To: <1422864424-19411-1-git-send-email-feng.wu-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Return error when inserting a new IOMMU which doesn't support PI
if PI is currently in use.
Signed-off-by: Feng Wu <feng.wu-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
---
drivers/iommu/intel_irq_remapping.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/drivers/iommu/intel_irq_remapping.c b/drivers/iommu/intel_irq_remapping.c
index 130a92b..0c2c317 100644
--- a/drivers/iommu/intel_irq_remapping.c
+++ b/drivers/iommu/intel_irq_remapping.c
@@ -1339,6 +1339,9 @@ int dmar_ir_hotplug(struct dmar_drhd_unit *dmaru, bool insert)
return -EINVAL;
if (!ecap_ir_support(iommu->ecap))
return 0;
+ if (irq_remapping_cap(IRQ_POSTING_CAP) &&
+ !cap_pi_support(iommu->cap))
+ return -EBUSY;
if (insert) {
if (!iommu->ir_table)
--
1.7.1
next prev parent reply other threads:[~2015-02-02 8:07 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-02-02 8:06 [v4 0/8] Add VT-d Posted-Interrupts support - IOMMU part Feng Wu
[not found] ` <1422864424-19411-1-git-send-email-feng.wu-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2015-02-02 8:06 ` [v4 1/8] iommu: Add new member capability to struct irq_remap_ops Feng Wu
2015-02-02 8:06 ` [v4 2/8] iommu, x86: Define new irte structure for VT-d Posted-Interrupts Feng Wu
[not found] ` <1422864424-19411-3-git-send-email-feng.wu-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2015-03-23 11:57 ` Joerg Roedel
2015-03-24 2:32 ` Wu, Feng
2015-03-31 15:16 ` Joerg Roedel
[not found] ` <20150331151643.GF22683-zLv9SwRftAIdnm+yROfE0A@public.gmane.org>
2015-04-01 8:51 ` Wu, Feng
2015-02-02 8:06 ` [v4 3/8] iommu, x86: Implement irq_set_vcpu_affinity for intel_ir_chip Feng Wu
2015-02-02 8:07 ` [v4 4/8] iommu, x86: No need to migrating irq for VT-d Posted-Interrupts Feng Wu
2015-02-02 8:07 ` [v4 5/8] iommu, x86: Add cap_pi_support() to detect VT-d PI capability Feng Wu
2015-02-02 8:07 ` [v4 6/8] iommu, x86: Setup Posted-Interrupts capability for Intel iommu Feng Wu
2015-02-02 8:07 ` [v4 7/8] iommu, x86: define irq_remapping_cap() Feng Wu
2015-02-02 8:07 ` Feng Wu [this message]
2015-04-02 11:28 ` [v4 0/8] Add VT-d Posted-Interrupts support - IOMMU part Joerg Roedel
[not found] ` <20150402112833.GN4441-zLv9SwRftAIdnm+yROfE0A@public.gmane.org>
2015-04-03 8:12 ` Li, ZhenHua
[not found] ` <551E4B7D.6020108-VXdhtT5mjnY@public.gmane.org>
2015-04-07 5:02 ` Wu, Feng
-- strict thread matches above, loose matches on Subject: below --
2015-02-02 8:01 Feng Wu
2015-02-02 8:01 ` [v4 8/8] iommu, x86: Properly handler PI for IOMMU hotplug Feng Wu
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