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From: Thomas Gleixner <tglx@linutronix.de>
To: LKML <linux-kernel@vger.kernel.org>
Cc: Alex Williamson <alex.williamson@redhat.com>,
	"Raj, Ashok" <ashok.raj@intel.com>,
	"David S. Miller" <davem@davemloft.net>,
	Bjorn Helgaas <bhelgaas@google.com>,
	linux-pci@vger.kernel.org, Kevin Tian <kevin.tian@intel.com>,
	Marc Zyngier <maz@kernel.org>, Ingo Molnar <mingo@kernel.org>,
	x86@kernel.org, linux-s390@vger.kernel.org,
	Niklas Schnelle <schnelle@linux.ibm.com>,
	Gerald Schaefer <gerald.schaefer@linux.ibm.com>,
	Heiko Carstens <hca@linux.ibm.com>,
	Christian Borntraeger <borntraeger@de.ibm.com>
Subject: [patch V2 13/19] PCI/MSI: Simplify msi_verify_entries()
Date: Thu, 29 Jul 2021 23:51:52 +0200	[thread overview]
Message-ID: <20210729222542.992849326@linutronix.de> (raw)
In-Reply-To: <20210729215139.889204656@linutronix.de>

From: Thomas Gleixner <tglx@linutronix.de>

No point in looping over all entries when 64bit addressing mode is enabled
for nothing.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Marc Zyngier <maz@kernel.org>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
---
 drivers/pci/msi.c |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

--- a/drivers/pci/msi.c
+++ b/drivers/pci/msi.c
@@ -613,8 +613,11 @@ static int msi_verify_entries(struct pci
 {
 	struct msi_desc *entry;
 
+	if (!dev->no_64bit_msi)
+		return 0;
+
 	for_each_pci_msi_entry(entry, dev) {
-		if (entry->msg.address_hi && dev->no_64bit_msi) {
+		if (entry->msg.address_hi) {
 			pci_err(dev, "arch assigned 64-bit MSI address %#x%08x but device only supports 32 bits\n",
 				entry->msg.address_hi, entry->msg.address_lo);
 			return -EIO;


  parent reply	other threads:[~2021-07-29 22:35 UTC|newest]

Thread overview: 43+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-29 21:51 [patch V2 00/19] PCI/MSI, x86: Cure a couple of inconsistencies Thomas Gleixner
2021-07-29 21:51 ` [patch V2 01/19] PCI/MSI: Enable and mask MSI-X early Thomas Gleixner
2021-08-10  9:07   ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2021-07-29 21:51 ` [patch V2 02/19] PCI/MSI: Mask all unused MSI-X entries Thomas Gleixner
2021-08-10  9:07   ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2021-07-29 21:51 ` [patch V2 03/19] PCI/MSI: Enforce that MSI-X table entry is masked for update Thomas Gleixner
2021-08-10  9:07   ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2021-07-29 21:51 ` [patch V2 04/19] PCI/MSI: Enforce MSI[X] entry updates to be visible Thomas Gleixner
2021-08-10  9:07   ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2021-07-29 21:51 ` [patch V2 05/19] PCI/MSI: Do not set invalid bits in MSI mask Thomas Gleixner
2021-08-10  9:07   ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2021-07-29 21:51 ` [patch V2 06/19] PCI/MSI: Correct misleading comments Thomas Gleixner
2021-08-10  9:07   ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2021-07-29 21:51 ` [patch V2 07/19] PCI/MSI: Use msi_mask_irq() in pci_msi_shutdown() Thomas Gleixner
2021-08-10  9:07   ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2021-07-29 21:51 ` [patch V2 08/19] PCI/MSI: Protect msi_desc::masked for multi-MSI Thomas Gleixner
2021-08-10  9:07   ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2021-07-29 21:51 ` [patch V2 09/19] genirq: Provide IRQCHIP_AFFINITY_PRE_STARTUP Thomas Gleixner
2021-08-10  9:07   ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2021-07-29 21:51 ` [patch V2 10/19] x86/ioapic: Force affinity setup before startup Thomas Gleixner
2021-08-10  9:07   ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2021-07-29 21:51 ` [patch V2 11/19] x86/msi: " Thomas Gleixner
2021-08-10  9:07   ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2021-07-29 21:51 ` [patch V2 12/19] s390/pci: Do not mask MSI[-X] entries on teardown Thomas Gleixner
2021-08-03 12:48   ` Niklas Schnelle
2021-08-10  9:07   ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2021-07-29 21:51 ` Thomas Gleixner [this message]
2021-08-10  9:07   ` [tip: irq/core] PCI/MSI: Simplify msi_verify_entries() tip-bot2 for Thomas Gleixner
2021-07-29 21:51 ` [patch V2 14/19] PCI/MSI: Rename msi_desc::masked Thomas Gleixner
2021-08-10  9:07   ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2021-07-29 21:51 ` [patch V2 15/19] PCI/MSI: Consolidate error handling in msi_capability_init() Thomas Gleixner
2021-08-10  9:07   ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2021-07-29 21:51 ` [patch V2 16/19] PCI/MSI: Deobfuscate virtual MSI-X Thomas Gleixner
2021-08-10  9:07   ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2021-07-29 21:51 ` [patch V2 17/19] PCI/MSI: Cleanup msi_mask() Thomas Gleixner
2021-08-10  9:07   ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2021-07-29 21:51 ` [patch V2 18/19] PCI/MSI: Provide a new set of mask and unmask functions Thomas Gleixner
     [not found]   ` <87r1f6bpt7.wl-maz@kernel.org>
2021-08-09 18:56     ` Thomas Gleixner
2021-08-09 19:08       ` [patch V3 " Thomas Gleixner
2021-08-10  9:07         ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2021-07-29 21:51 ` [patch V2 19/19] PCI/MSI: Use new mask/unmask functions Thomas Gleixner
2021-08-10  9:07   ` [tip: irq/core] " tip-bot2 for Thomas Gleixner
2021-08-10  7:49 ` [patch V2 00/19] PCI/MSI, x86: Cure a couple of inconsistencies Marc Zyngier

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