linux-kernel - [PATCH RESEND] x86/apic: Further apic::delivery

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Date:   Tue, 21 Nov 2023 12:30:34 +0000
From:   Andrew Cooper <andrew.cooper3@...rix.com>
To:     LKML <linux-kernel@...r.kernel.org>
CC:     Andrew Cooper <andrew.cooper3@...rix.com>,
        Joerg Roedel <joro@...tes.org>,
        Suravee Suthikulpanit <suravee.suthikulpanit@....com>,
        Will Deacon <will@...nel.org>,
        Robin Murphy <robin.murphy@....com>,
        David Woodhouse <dwmw2@...radead.org>,
        Lu Baolu <baolu.lu@...ux.intel.com>, <iommu@...ts.linux.dev>,
        <x86@...nel.org>, Borislav Petkov <bp@...en8.de>,
        Thomas Gleixner <tglx@...utronix.de>
Subject: [PATCH RESEND] x86/apic: Further apic::delivery_mode cleanup

Fold the APIC_DELIVERY_MODE_FIXED constant in more cases now that the apic
field has disappeared.

Signed-off-by: Andrew Cooper <andrew.cooper3@...rix.com>
---
CC: Joerg Roedel <joro@...tes.org>
CC: Suravee Suthikulpanit <suravee.suthikulpanit@....com>
CC: Will Deacon <will@...nel.org>
CC: Robin Murphy <robin.murphy@....com>
CC: David Woodhouse <dwmw2@...radead.org>
CC: Lu Baolu <baolu.lu@...ux.intel.com>
CC: iommu@...ts.linux.dev
CC: linux-kernel@...r.kernel.org
CC: x86@...nel.org
CC: Borislav Petkov <bp@...en8.de>
CC: Thomas Gleixner <tglx@...utronix.de>

RESEND, this time with working x86 maintainer emails.

Does this want a fixes tag?  If so,

Fixes: b5148dfe66f5 ("x86/apic: Drop apic::delivery_mode")

diff --git a/drivers/iommu/amd/iommu.c b/drivers/iommu/amd/iommu.c
index 95bd7c25ba6f..542b823f9827 100644
--- a/drivers/iommu/amd/iommu.c
+++ b/drivers/iommu/amd/iommu.c
@@ -3311,7 +3311,7 @@ static void irq_remapping_prepare_irte(struct amd_ir_data *data,
 
 	data->irq_2_irte.devid = devid;
 	data->irq_2_irte.index = index + sub_handle;
-	iommu->irte_ops->prepare(data->entry, apic->delivery_mode,
+	iommu->irte_ops->prepare(data->entry, APIC_DELIVERY_MODE_FIXED,
 				 apic->dest_mode_logical, irq_cfg->vector,
 				 irq_cfg->dest_apicid, devid);
 
@@ -3588,7 +3588,7 @@ int amd_iommu_deactivate_guest_mode(void *data)
 
 	entry->lo.fields_remap.valid       = valid;
 	entry->lo.fields_remap.dm          = apic->dest_mode_logical;
-	entry->lo.fields_remap.int_type    = apic->delivery_mode;
+	entry->lo.fields_remap.int_type    = APIC_DELIVERY_MODE_FIXED;
 	entry->hi.fields.vector            = cfg->vector;
 	entry->lo.fields_remap.destination =
 				APICID_TO_IRTE_DEST_LO(cfg->dest_apicid);
diff --git a/drivers/iommu/intel/irq_remapping.c b/drivers/iommu/intel/irq_remapping.c
index 29b9e55dcf26..566297bc87dd 100644
--- a/drivers/iommu/intel/irq_remapping.c
+++ b/drivers/iommu/intel/irq_remapping.c
@@ -1112,7 +1112,7 @@ static void prepare_irte(struct irte *irte, int vector, unsigned int dest)
 	 * irq migration in the presence of interrupt-remapping.
 	*/
 	irte->trigger_mode = 0;
-	irte->dlvry_mode = apic->delivery_mode;
+	irte->dlvry_mode = APIC_DELIVERY_MODE_FIXED;
 	irte->vector = vector;
 	irte->dest_id = IRTE_DEST(dest);
 	irte->redir_hint = 1;