linux-kernel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Feng Wu <feng.wu@intel.com>
To: pbonzini@redhat.com, alex.williamson@redhat.com, joro@8bytes.org,
	mtosatti@redhat.com
Cc: eric.auger@linaro.org, kvm@vger.kernel.org,
	iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org,
	Feng Wu <feng.wu@intel.com>
Subject: [PATCH v8 13/13] iommu/vt-d: Add a command line parameter for VT-d posted-interrupts
Date: Wed, 16 Sep 2015 16:50:09 +0800	[thread overview]
Message-ID: <1442393409-2623-14-git-send-email-feng.wu@intel.com> (raw)
In-Reply-To: <1442393409-2623-1-git-send-email-feng.wu@intel.com>

Enable VT-d Posted-Interrtups and add a command line
parameter for it.

Signed-off-by: Feng Wu <feng.wu@intel.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
---
 Documentation/kernel-parameters.txt |  1 +
 drivers/iommu/irq_remapping.c       | 12 ++++++++----
 2 files changed, 9 insertions(+), 4 deletions(-)

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 1d6f045..52aca36 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -1547,6 +1547,7 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
 			nosid	disable Source ID checking
 			no_x2apic_optout
 				BIOS x2APIC opt-out request will be ignored
+			nopost	disable Interrupt Posting
 
 	iomem=		Disable strict checking of access to MMIO memory
 		strict	regions from userspace.
diff --git a/drivers/iommu/irq_remapping.c b/drivers/iommu/irq_remapping.c
index 2d99930..d8c3997 100644
--- a/drivers/iommu/irq_remapping.c
+++ b/drivers/iommu/irq_remapping.c
@@ -22,7 +22,7 @@ int irq_remap_broken;
 int disable_sourceid_checking;
 int no_x2apic_optout;
 
-int disable_irq_post = 1;
+int disable_irq_post = 0;
 
 static int disable_irq_remap;
 static struct irq_remap_ops *remap_ops;
@@ -58,14 +58,18 @@ static __init int setup_irqremap(char *str)
 		return -EINVAL;
 
 	while (*str) {
-		if (!strncmp(str, "on", 2))
+		if (!strncmp(str, "on", 2)) {
 			disable_irq_remap = 0;
-		else if (!strncmp(str, "off", 3))
+			disable_irq_post = 0;
+		} else if (!strncmp(str, "off", 3)) {
 			disable_irq_remap = 1;
-		else if (!strncmp(str, "nosid", 5))
+			disable_irq_post = 1;
+		} else if (!strncmp(str, "nosid", 5))
 			disable_sourceid_checking = 1;
 		else if (!strncmp(str, "no_x2apic_optout", 16))
 			no_x2apic_optout = 1;
+		else if (!strncmp(str, "nopost", 6))
+			disable_irq_post = 1;
 
 		str += strcspn(str, ",");
 		while (*str == ',')
-- 
2.1.0


  parent reply	other threads:[~2015-09-16  9:05 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-09-16  8:49 [PATCH v8 00/13] Add VT-d Posted-Interrupts support Feng Wu
2015-09-16  8:49 ` [PATCH v8 01/13] KVM: Extend struct pi_desc for VT-d Posted-Interrupts Feng Wu
2015-09-16  8:49 ` [PATCH v8 02/13] KVM: Add some helper functions for Posted-Interrupts Feng Wu
2015-09-16  8:49 ` [PATCH v8 03/13] KVM: Define a new interface kvm_intr_is_single_vcpu() Feng Wu
2015-09-16  9:23   ` Paolo Bonzini
2015-09-17  3:17     ` Wu, Feng
2015-09-17  9:42       ` Paolo Bonzini
2015-09-17 13:36         ` Wu, Feng
2015-09-17 14:24           ` Paolo Bonzini
2015-09-17 15:58             ` Radim Krčmář
2015-09-17 16:00               ` Paolo Bonzini
2015-09-17 23:18                 ` Wu, Feng
2015-09-18 16:16                   ` Radim Krčmář
2015-09-18 16:17                     ` Paolo Bonzini
2015-09-17 23:15             ` Wu, Feng
2015-09-16  8:50 ` [PATCH v8 04/13] KVM: Make struct kvm_irq_routing_table accessible Feng Wu
2015-09-16  8:50 ` [PATCH v8 05/13] KVM: make kvm_set_msi_irq() public Feng Wu
2015-09-16  8:50 ` [PATCH v8 06/13] vfio: Register/unregister irq_bypass_producer Feng Wu
2015-09-16  8:50 ` [PATCH v8 07/13] KVM: x86: Update IRTE for posted-interrupts Feng Wu
2015-09-16  8:50 ` [PATCH v8 08/13] KVM: Implement IRQ bypass consumer callbacks for x86 Feng Wu
2015-09-16  8:50 ` [PATCH v8 09/13] KVM: Add an arch specific hooks in 'struct kvm_kernel_irqfd' Feng Wu
2015-09-16  9:27   ` Paolo Bonzini
2015-09-17  1:51     ` Wu, Feng
2015-09-17  9:38       ` Paolo Bonzini
2015-09-16  8:50 ` [PATCH v8 10/13] KVM: Update Posted-Interrupts Descriptor when vCPU is preempted Feng Wu
2015-09-16  9:29   ` Paolo Bonzini
2015-09-16  8:50 ` [PATCH v8 11/13] KVM: Update Posted-Interrupts Descriptor when vCPU is blocked Feng Wu
2015-09-16  9:32   ` Paolo Bonzini
2015-09-16  8:50 ` [PATCH v8 12/13] KVM: Warn if 'SN' is set during posting interrupts by software Feng Wu
2015-09-16  9:32   ` Paolo Bonzini
2015-09-16  8:50 ` Feng Wu [this message]
2015-09-16  9:34 ` [PATCH v8 00/13] Add VT-d Posted-Interrupts support Paolo Bonzini

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=1442393409-2623-14-git-send-email-feng.wu@intel.com \
    --to=feng.wu@intel.com \
    --cc=alex.williamson@redhat.com \
    --cc=eric.auger@linaro.org \
    --cc=iommu@lists.linux-foundation.org \
    --cc=joro@8bytes.org \
    --cc=kvm@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=mtosatti@redhat.com \
    --cc=pbonzini@redhat.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).