From: Quan Xu <quan.xu@intel.com>
To: andrew.cooper3@citrix.com, eddie.dong@intel.com,
ian.campbell@citrix.com, ian.jackson@eu.citrix.com,
jbeulich@suse.com, jun.nakajima@intel.com, keir@xen.org,
kevin.tian@intel.com, tim@xen.org, yang.z.zhang@intel.com,
george.dunlap@eu.citrix.com
Cc: Quan Xu <quan.xu@intel.com>, xen-devel@lists.xen.org
Subject: [Patch RFC 06/13] vt-d: Introduce a new per-domain flag - qi_flag.
Date: Wed, 16 Sep 2015 09:24:00 -0400 [thread overview]
Message-ID: <1442409847-65383-7-git-send-email-quan.xu@intel.com> (raw)
In-Reply-To: <1442409847-65383-1-git-send-email-quan.xu@intel.com>
The qi_flag is Set when submit Device-TLB invalidation requests. The
qi_flag will be Clear in QI interrupt handler if there are no in-flight
Device-TLB invalidation requests.
Signed-off-by: Quan Xu <quan.xu@intel.com>
---
xen/drivers/passthrough/vtd/iommu.c | 1 +
xen/drivers/passthrough/vtd/qinval.c | 1 +
xen/include/xen/hvm/iommu.h | 3 +++
3 files changed, 5 insertions(+)
diff --git a/xen/drivers/passthrough/vtd/iommu.c b/xen/drivers/passthrough/vtd/iommu.c
index e3acea5..fda9a84 100644
--- a/xen/drivers/passthrough/vtd/iommu.c
+++ b/xen/drivers/passthrough/vtd/iommu.c
@@ -1144,6 +1144,7 @@ scan_again:
{
qi_table_data(d) = 0;
qi_table_pollslot(d) = 0;
+ QI_FLUSHING(d) = 0;
}
rcu_unlock_domain(d);
}
diff --git a/xen/drivers/passthrough/vtd/qinval.c b/xen/drivers/passthrough/vtd/qinval.c
index abe6e9c..0d85ce7 100644
--- a/xen/drivers/passthrough/vtd/qinval.c
+++ b/xen/drivers/passthrough/vtd/qinval.c
@@ -165,6 +165,7 @@ static int queue_invalidate_wait(struct iommu *iommu,
qinval_entry->q.inv_wait_dsc.lo.sdata = ++ qi_table_data(d);
qinval_entry->q.inv_wait_dsc.hi.saddr = virt_to_maddr(
&qi_table_pollslot(d)) >> 2;
+ QI_FLUSHING(d) = 1;
rcu_unlock_domain(d);
} else {
qinval_entry->q.inv_wait_dsc.lo.sdata = QINVAL_STAT_DONE;
diff --git a/xen/include/xen/hvm/iommu.h b/xen/include/xen/hvm/iommu.h
index 28e7fc3..e838905 100644
--- a/xen/include/xen/hvm/iommu.h
+++ b/xen/include/xen/hvm/iommu.h
@@ -51,6 +51,7 @@ struct hvm_iommu {
/* IOMMU Queued Invalidation(QI) */
struct qi_talbe talbe;
+ bool_t qi_flag;
/* Features supported by the IOMMU */
DECLARE_BITMAP(features, IOMMU_FEAT_count);
@@ -63,5 +64,7 @@ struct hvm_iommu {
(d->arch.hvm_domain.hvm_iommu.talbe.qi_table_status_data)
#define qi_table_pollslot(d) \
(d->arch.hvm_domain.hvm_iommu.talbe.qi_table_poll_slot)
+#define QI_FLUSHING(d) \
+ (d->arch.hvm_domain.hvm_iommu.qi_flag)
#endif /* __XEN_HVM_IOMMU_H__ */
--
1.8.3.2
next prev parent reply other threads:[~2015-09-16 13:24 UTC|newest]
Thread overview: 84+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-16 13:23 [Patch RFC 00/13] VT-d Asynchronous Device-TLB Flush for ATS Device Quan Xu
2015-09-16 10:46 ` Ian Jackson
2015-09-16 11:22 ` Julien Grall
2015-09-16 13:47 ` Ian Jackson
2015-09-17 9:06 ` Julien Grall
2015-09-17 10:16 ` Ian Jackson
2015-09-16 13:33 ` Xu, Quan
2015-09-16 13:23 ` [Patch RFC 01/13] vt-d: Redefine iommu_set_interrupt() for registering MSI interrupt Quan Xu
2015-09-29 8:43 ` Jan Beulich
2015-09-16 13:23 ` [Patch RFC 02/13] vt-d: Register MSI for async invalidation completion interrupt Quan Xu
2015-09-29 8:57 ` Jan Beulich
2015-10-10 8:22 ` Xu, Quan
2015-10-12 7:11 ` Jan Beulich
2015-09-16 13:23 ` [Patch RFC 03/13] vt-d: Track the Device-TLB invalidation status in an invalidation table Quan Xu
2015-09-16 9:33 ` Julien Grall
2015-09-16 13:43 ` Xu, Quan
2015-09-29 9:24 ` Jan Beulich
2015-10-10 12:27 ` Xu, Quan
2015-10-12 7:15 ` Jan Beulich
2015-09-16 13:23 ` [Patch RFC 04/13] vt-d: Clear invalidation table in invaidation interrupt handler Quan Xu
2015-09-29 9:33 ` Jan Beulich
2015-09-16 13:23 ` [Patch RFC 05/13] vt-d: Clear the IWC field of Invalidation Event Control Register in Quan Xu
2015-09-29 9:44 ` Jan Beulich
2015-09-16 13:24 ` Quan Xu [this message]
2015-09-16 9:34 ` [Patch RFC 06/13] vt-d: Introduce a new per-domain flag - qi_flag Julien Grall
2015-09-16 13:24 ` [Patch RFC 07/13] vt-d: If the qi_flag is Set, the domain's vCPUs are not allowed to Quan Xu
2015-09-16 9:44 ` Julien Grall
2015-09-16 14:03 ` Xu, Quan
2015-09-16 13:24 ` [Patch RFC 08/13] vt-d: Held on the freed page until the Device-TLB flush is completed Quan Xu
2015-09-16 9:45 ` Julien Grall
2015-09-16 13:24 ` [Patch RFC 09/13] vt-d: Put the page in Queued Invalidation(QI) interrupt handler if Quan Xu
2015-09-16 13:24 ` [Patch RFC 10/13] vt-d: Held on the removed page until the Device-TLB flush is completed Quan Xu
2015-09-16 9:52 ` Julien Grall
2015-09-16 13:24 ` [Patch RFC 11/13] vt-d: If the Device-TLB flush is still not completed when Quan Xu
2015-09-16 9:56 ` Julien Grall
2015-09-23 17:38 ` Konrad Rzeszutek Wilk
2015-09-24 1:40 ` Xu, Quan
2015-09-16 13:24 ` [Patch RFC 12/13] vt-d: For gnttab_transfer, If the Device-TLB flush is still Quan Xu
2015-09-16 13:24 ` [Patch RFC 13/13] vt-d: Set the IF bit in Invalidation Wait Descriptor When submit Device-TLB Quan Xu
2015-09-29 9:46 ` Jan Beulich
2015-09-17 3:26 ` [Patch RFC 00/13] VT-d Asynchronous Device-TLB Flush for ATS Device Xu, Quan
2015-09-21 8:51 ` Jan Beulich
2015-09-21 9:46 ` Xu, Quan
2015-09-21 12:03 ` Jan Beulich
2015-09-21 14:03 ` Xu, Quan
2015-09-21 14:20 ` Jan Beulich
2015-09-21 14:09 ` Xu, Quan
2015-09-23 16:26 ` Tim Deegan
2015-09-28 3:08 ` Xu, Quan
2015-09-28 6:47 ` Jan Beulich
2015-09-29 2:53 ` Xu, Quan
2015-09-29 7:21 ` Jan Beulich
2015-09-30 13:55 ` Xu, Quan
2015-09-30 14:03 ` Jan Beulich
2015-10-13 14:29 ` Xu, Quan
2015-10-13 14:50 ` Jan Beulich
2015-10-14 14:54 ` Xu, Quan
2015-09-29 9:11 ` Tim Deegan
2015-09-29 9:57 ` Jan Beulich
2015-09-30 15:05 ` Xu, Quan
2015-10-01 9:09 ` Tim Deegan
2015-10-07 17:02 ` Xu, Quan
2015-10-08 8:51 ` Jan Beulich
2015-10-09 7:06 ` Xu, Quan
2015-10-09 7:18 ` Jan Beulich
2015-10-09 7:51 ` Xu, Quan
2015-10-10 18:24 ` Tim Deegan
2015-10-11 11:09 ` Xu, Quan
2015-10-12 12:25 ` Jan Beulich
2015-10-13 9:34 ` Tim Deegan
2015-10-14 14:44 ` Xu, Quan
2015-10-12 1:42 ` Zhang, Yang Z
2015-10-12 12:34 ` Jan Beulich
2015-10-13 5:27 ` Zhang, Yang Z
2015-10-13 9:15 ` Jan Beulich
2015-10-14 5:12 ` Zhang, Yang Z
2015-10-14 9:30 ` Jan Beulich
2015-10-15 1:03 ` Zhang, Yang Z
2015-10-15 6:46 ` Jan Beulich
2015-10-15 7:28 ` Zhang, Yang Z
2015-10-15 8:25 ` Jan Beulich
2015-10-15 8:52 ` Zhang, Yang Z
2015-10-15 9:24 ` Jan Beulich
2015-10-15 9:50 ` Zhang, Yang Z
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1442409847-65383-7-git-send-email-quan.xu@intel.com \
--to=quan.xu@intel.com \
--cc=andrew.cooper3@citrix.com \
--cc=eddie.dong@intel.com \
--cc=george.dunlap@eu.citrix.com \
--cc=ian.campbell@citrix.com \
--cc=ian.jackson@eu.citrix.com \
--cc=jbeulich@suse.com \
--cc=jun.nakajima@intel.com \
--cc=keir@xen.org \
--cc=kevin.tian@intel.com \
--cc=tim@xen.org \
--cc=xen-devel@lists.xen.org \
--cc=yang.z.zhang@intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).