From: tip-bot for Feng Wu <tipbot@zytor.com>
To: linux-tip-commits@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, joro@8bytes.org, mingo@kernel.org,
tglx@linutronix.de, feng.wu@intel.com, hpa@zytor.com
Subject: [tip:x86/apic] iommu, x86: Save the mode (posted or remapped) of an IRTE
Date: Mon, 8 Jun 2015 06:44:11 -0700 [thread overview]
Message-ID: <tip-7737e29368f693c7de97503133d05dc0675a09c0@git.kernel.org> (raw)
In-Reply-To: <1433482974-14614-5-git-send-email-feng.wu@intel.com>
Commit-ID: 7737e29368f693c7de97503133d05dc0675a09c0
Gitweb: http://git.kernel.org/tip/7737e29368f693c7de97503133d05dc0675a09c0
Author: Feng Wu <feng.wu@intel.com>
AuthorDate: Fri, 5 Jun 2015 13:42:49 +0800
Committer: Thomas Gleixner <tglx@linutronix.de>
CommitDate: Mon, 8 Jun 2015 15:41:32 +0200
iommu, x86: Save the mode (posted or remapped) of an IRTE
Add a new field to struct irq_2_iommu, which captures whether the
associated IRTE is in posted mode or remapped mode. We update this
field when the IRTE is written into the table.
Suggested-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Feng Wu <feng.wu@intel.com>
Acked-by: Joerg Roedel <joro@8bytes.org>
Cc: jiang.liu@linux.intel.com
Cc: iommu@lists.linux-foundation.org
Cc: dwmw2@infradead.org
Link: http://lkml.kernel.org/r/1433482974-14614-5-git-send-email-feng.wu@intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
drivers/iommu/intel_irq_remapping.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/drivers/iommu/intel_irq_remapping.c b/drivers/iommu/intel_irq_remapping.c
index a643eec..68bce0a 100644
--- a/drivers/iommu/intel_irq_remapping.c
+++ b/drivers/iommu/intel_irq_remapping.c
@@ -18,6 +18,11 @@
#include "irq_remapping.h"
+enum irq_mode {
+ IRQ_REMAPPING,
+ IRQ_POSTING,
+};
+
struct ioapic_scope {
struct intel_iommu *iommu;
unsigned int id;
@@ -37,6 +42,7 @@ struct irq_2_iommu {
u16 irte_index;
u16 sub_handle;
u8 irte_mask;
+ enum irq_mode mode;
};
struct intel_ir_data {
@@ -104,6 +110,7 @@ static int alloc_irte(struct intel_iommu *iommu, int irq,
irq_iommu->irte_index = index;
irq_iommu->sub_handle = 0;
irq_iommu->irte_mask = mask;
+ irq_iommu->mode = IRQ_REMAPPING;
}
raw_spin_unlock_irqrestore(&irq_2_ir_lock, flags);
@@ -144,6 +151,9 @@ static int modify_irte(struct irq_2_iommu *irq_iommu,
__iommu_flush_cache(iommu, irte, sizeof(*irte));
rc = qi_flush_iec(iommu, index, 0);
+
+ /* Update iommu mode according to the IRTE mode */
+ irq_iommu->mode = irte->pst ? IRQ_POSTING : IRQ_REMAPPING;
raw_spin_unlock_irqrestore(&irq_2_ir_lock, flags);
return rc;
next prev parent reply other threads:[~2015-06-08 13:48 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-05 5:42 [v9 0/9] Add VT-d Posted-Interrupts support - IOMMU part Feng Wu
2015-06-05 5:42 ` [v9 1/9] iommu: Add new member capability to struct irq_remap_ops Feng Wu
2015-06-08 13:42 ` [tip:x86/apic] " tip-bot for Feng Wu
2015-06-05 5:42 ` [v9 2/9] iommu: dmar: Extend struct irte for VT-d Posted-Interrupts Feng Wu
2015-06-08 13:43 ` [tip:x86/apic] " tip-bot for Thomas Gleixner
2015-06-05 5:42 ` [v9 3/9] iommu, x86: Implement irq_set_vcpu_affinity for intel_ir_chip Feng Wu
2015-06-08 13:43 ` [tip:x86/apic] " tip-bot for Feng Wu
2015-06-05 5:42 ` [v9 4/9] iommu, x86: Save the mode (posted or remapped) of an IRTE Feng Wu
2015-06-08 13:44 ` tip-bot for Feng Wu [this message]
2015-06-05 5:42 ` [v9 5/9] iommu, x86: No need to migrating irq for VT-d Posted-Interrupts Feng Wu
2015-06-08 13:44 ` [tip:x86/apic] iommu, x86: Avoid migrating VT-d posted interrupts tip-bot for Feng Wu
2015-06-05 5:42 ` [v9 6/9] iommu, x86: Add cap_pi_support() to detect VT-d PI capability Feng Wu
2015-06-08 13:44 ` [tip:x86/apic] " tip-bot for Feng Wu
2015-06-05 5:42 ` [v9 7/9] iommu, x86: Setup Posted-Interrupts capability for Intel iommu Feng Wu
2015-06-08 13:45 ` [tip:x86/apic] " tip-bot for Feng Wu
2015-06-05 5:42 ` [v9 8/9] iommu, x86: define irq_remapping_cap() Feng Wu
2015-06-08 13:45 ` [tip:x86/apic] iommu, x86: Provide irq_remapping_cap() interface tip-bot for Feng Wu
2015-06-05 5:42 ` [v9 9/9] iommu, x86: Properly handler PI for IOMMU hotplug Feng Wu
2015-06-08 13:45 ` [tip:x86/apic] iommu, x86: Properly handle posted interrupts " tip-bot for Feng Wu
2015-06-05 11:47 ` [v9 0/9] Add VT-d Posted-Interrupts support - IOMMU part Thomas Gleixner
2015-06-05 13:33 ` Joerg Roedel
2015-06-08 1:23 ` Wu, Feng
2015-06-09 5:20 [v10 05/10] iommu, x86: Save the mode (posted or remapped) of an IRTE Feng Wu
2015-06-12 9:49 ` [tip:x86/apic] " tip-bot for Feng Wu
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