From: Ricardo Neri <ricardo.neri-calderon@linux.intel.com>
To: Tony Luck <tony.luck@intel.com>,
Dave Hansen <dave.hansen@intel.com>,
"Rafael J. Wysocki" <rafael.j.wysocki@intel.com>,
Reinette Chatre <reinette.chatre@intel.com>,
Dan Williams <dan.j.williams@intel.com>,
Len Brown <len.brown@intel.com>
Cc: "Ravi V. Shankar" <ravi.v.shankar@intel.com>,
Andi Kleen <ak@linux.intel.com>,
Ricardo Neri <ricardo.neri-calderon@linux.intel.com>,
Ricardo Neri <ricardo.neri@intel.com>,
Stephane Eranian <eranian@google.com>,
linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org,
linuxppc-dev@lists.ozlabs.org
Subject: [PATCH v7 05/24] x86/apic/vector: Skip cleanup for the NMI vector
Date: Wed, 1 Mar 2023 15:47:34 -0800 [thread overview]
Message-ID: <20230301234753.28582-6-ricardo.neri-calderon@linux.intel.com> (raw)
In-Reply-To: <20230301234753.28582-1-ricardo.neri-calderon@linux.intel.com>
The NMI vector is fixed. No cleanup is needed after updating affinity.
Cc: Andi Kleen <ak@linux.intel.com>
Cc: "Ravi V. Shankar" <ravi.v.shankar@intel.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: iommu@lists.linux-foundation.org
Cc: linuxppc-dev@lists.ozlabs.org
Signed-off-by: Ricardo Neri <ricardo.neri-calderon@linux.intel.com>
---
Changes since v6:
* Introduced this patch.
Changes since v5:
* N/A
Changes since v4:
* N/A
Changes since v3:
* N/A
Changes since v2:
* N/A
Changes since v1:
* N/A
---
arch/x86/kernel/apic/vector.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/arch/x86/kernel/apic/vector.c b/arch/x86/kernel/apic/vector.c
index a4cf041427cb..3045823ecc1b 100644
--- a/arch/x86/kernel/apic/vector.c
+++ b/arch/x86/kernel/apic/vector.c
@@ -1050,6 +1050,10 @@ void send_cleanup_vector(struct irq_cfg *cfg)
{
struct apic_chip_data *apicd;
+ /* NMI has a fixed vector. No vector management required. */
+ if (cfg->delivery_mode == APIC_DELIVERY_MODE_NMI)
+ return;
+
apicd = container_of(cfg, struct apic_chip_data, hw_irq_cfg);
if (apicd->move_in_progress)
__send_cleanup_vector(apicd);
--
2.25.1
next prev parent reply other threads:[~2023-03-01 23:42 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-01 23:47 [PATCH v7 00/24] x86: Implement an HPET-based hardlockup detector Ricardo Neri
2023-03-01 23:47 ` [PATCH v7 01/24] x86/apic: Add irq_cfg::delivery_mode Ricardo Neri
2023-03-01 23:47 ` [PATCH v7 02/24] x86/apic/msi: Use the delivery mode from irq_cfg for message composition Ricardo Neri
2023-03-01 23:47 ` [PATCH v7 03/24] x86/apic: Add the X86_IRQ_ALLOC_AS_NMI interrupt allocation flag Ricardo Neri
2023-03-01 23:47 ` [PATCH v7 04/24] x86/apic/vector: Implement a local APIC NMI controller Ricardo Neri
2023-03-01 23:47 ` Ricardo Neri [this message]
2023-03-01 23:47 ` [PATCH v7 06/24] iommu/vt-d: Clear the redirection hint when the destination mode is physical Ricardo Neri
2023-03-01 23:47 ` [PATCH v7 07/24] iommu/vt-d: Rework prepare_irte() to support per-interrupt delivery mode Ricardo Neri
2023-03-01 23:47 ` [PATCH v7 08/24] iommu/vt-d: Set the IRTE delivery mode individually for each interrupt Ricardo Neri
2023-03-01 23:47 ` [PATCH v7 09/24] iommu/amd: Expose [set|get]_dev_entry_bit() Ricardo Neri
2023-03-01 23:47 ` [PATCH v7 10/24] iommu/amd: Enable NMIPass when allocating an NMI Ricardo Neri
2023-03-01 23:47 ` [PATCH v7 11/24] iommu/amd: Compose MSI messages for NMIs in non-IR format Ricardo Neri
2023-03-01 23:47 ` [PATCH v7 12/24] x86/hpet: Expose hpet_writel() in header Ricardo Neri
2023-03-01 23:47 ` [PATCH v7 13/24] x86/hpet: Add helper function hpet_set_comparator_periodic() Ricardo Neri
2023-03-01 23:47 ` [PATCH v7 14/24] x86/hpet: Prepare IRQ assignments to use the X86_ALLOC_AS_NMI flag Ricardo Neri
2023-03-01 23:47 ` [PATCH v7 15/24] x86/hpet: Reserve an HPET channel for the hardlockup detector Ricardo Neri
2023-03-01 23:47 ` [PATCH v7 16/24] watchdog/hardlockup: Define a generic function to detect hardlockups Ricardo Neri
2023-03-01 23:47 ` [PATCH v7 17/24] watchdog/hardlockup: Decouple the hardlockup detector from perf Ricardo Neri
2023-03-01 23:47 ` [PATCH v7 18/24] init/main: Delay initialization of the lockup detector after smp_init() Ricardo Neri
2023-03-01 23:47 ` [PATCH v7 19/24] x86/watchdog/hardlockup: Add an HPET-based hardlockup detector Ricardo Neri
2023-03-01 23:47 ` [PATCH v7 20/24] x86/watchdog/hardlockup/hpet: Determine if HPET timer caused NMI Ricardo Neri
2023-03-01 23:47 ` [PATCH v7 21/24] watchdog/hardlockup/hpet: Only enable the HPET watchdog via a boot parameter Ricardo Neri
2023-03-01 23:47 ` [PATCH v7 22/24] x86/watchdog: Add a shim hardlockup detector Ricardo Neri
2023-03-01 23:47 ` [PATCH v7 23/24] watchdog: Introduce hardlockup_detector_mark_unavailable() Ricardo Neri
2023-03-01 23:47 ` [PATCH v7 24/24] x86/tsc: Stop the HPET hardlockup detector if TSC become unstable Ricardo Neri
2023-04-13 3:58 ` [PATCH v7 00/24] x86: Implement an HPET-based hardlockup detector Ricardo Neri
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