linux-kernel - [PATCH 0/3] x86, MSI: Support multiple MSIs in presense of IRQ remapping

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:	Tue, 31 Jul 2012 13:41:02 +0200
From:	Alexander Gordeev <agordeev@...hat.com>
To:	linux-kernel@...r.kernel.org
Cc:	Ingo Molnar <mingo@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Suresh Siddha <suresh.b.siddha@...el.com>,
	Yinghai Lu <yinghai@...nel.org>,
	Matthew Wilcox <willy@...ux.intel.com>
Subject: [PATCH 0/3] x86, MSI: Support multiple MSIs in presense of IRQ
 remapping

Currently multiple MSI mode is limited to a single vector per device (at
least on x86 and PPC). This series breathes life into pci_enable_msi_block()
and makes it possible to set interrupt affinity for multiple IRQs, similarly
to MSI-X. Yet, only for x86 and only when IOMMUs are present.

Although IRQ and PCI subsystems are modified, the current behaviour left
intact. The drivers could just start using multiple MSIs just by following
the existing documentation.

The patches are adapted to Ingo's -tip repository, x86/apic branch.

Alexander Gordeev (3):
  x86, MSI: Support multiple MSIs in presense of IRQ remapping
  x86, MSI: Allocate as many multiple IRQs as requested
  x86, MSI: Minor readability fixes

 arch/x86/kernel/apic/io_apic.c |  170 +++++++++++++++++++++++++++++++++++++---
 drivers/pci/msi.c              |   10 ++-
 include/linux/irq.h            |    6 ++
 include/linux/msi.h            |    1 +
 kernel/irq/chip.c              |   30 +++++--
 kernel/irq/irqdesc.c           |   31 +++++++
 6 files changed, 226 insertions(+), 22 deletions(-)

-- 
1.7.7.6


-- 
Regards,
Alexander Gordeev
agordeev@...hat.com
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/