Re: [PATCH 1/3] PCI/MSI: Add pci_enable_msi_partial()

urner until it actually becomes a > problem. I plan to try get rid of arch_msi_check_device() hook. Should I repost this series afterwards? Thanks! -- Regards, Alexander Gordeev agord...@redhat.com ___ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu

Re: [PATCH 1/3] PCI/MSI: Add pci_enable_msi_partial()

I also do not like the fact the arch interface is getting complicated, so I happily leave it to your judgement ;) Well, it is low-level and hidden from drivers at least. Thanks! > Bjorn -- Regards, Alexander Gordeev agord...@redhat.com ___ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu

Re: [PATCH 1/3] PCI/MSI: Add pci_enable_msi_partial()

continues exactly as it has been. All archs besides x86 just ignore it. And x86 change is fairly small as well - all necessary functionality is already in. Thus, at the moment it is only AHCI of concern. And no, AHCI can not do MSI-X.. Thanks! > Bjorn -- Regards, Alexander Gordeev agord...@r

Re: [PATCH 1/3] PCI/MSI: Add pci_enable_msi_partial()

MSI vector makes a PCI host to raise interrupt on a CPU. I might be inaccurate in details, but the scenario you described is impossible AFAICT. > David > > > -- Regards, Alexander Gordeev agord...@redhat.com ___ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu

Re: [PATCH 1/3] PCI/MSI: Add pci_enable_msi_partial()

On Thu, Jul 03, 2014 at 09:20:52AM +, David Laight wrote: > From: Bjorn Helgaas > > On Tue, Jun 10, 2014 at 03:10:30PM +0200, Alexander Gordeev wrote: > > > There are PCI devices that require a particular value written > > > to the Multiple Message Enable (MME

Re: [PATCH 1/3] PCI/MSI: Add pci_enable_msi_partial()

On Wed, Jul 02, 2014 at 02:22:01PM -0600, Bjorn Helgaas wrote: > On Tue, Jun 10, 2014 at 03:10:30PM +0200, Alexander Gordeev wrote: > > There are PCI devices that require a particular value written > > to the Multiple Message Enable (MME) register while aligned on > > power o

Re: [PATCH 1/3] PCI/MSI: Add pci_enable_msi_partial()

Hi Bjorn, Any feedback? Thanks! -- Regards, Alexander Gordeev agord...@redhat.com ___ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu

[PATCH 1/3] PCI/MSI: Add pci_enable_msi_partial()

c: xen-de...@lists.xenproject.org Cc: iommu@lists.linux-foundation.org Cc: linux-...@vger.kernel.org Cc: linux-...@vger.kernel.org Signed-off-by: Alexander Gordeev --- Documentation/PCI/MSI-HOWTO.txt | 36 ++-- arch/mips/pci/msi-octeon.c |2 +- arch/powerpc/kernel/msi.c

[PATCH 2/3] PCI/MSI/x86: Support pci_enable_msi_partial()

ists.linux-foundation.org Cc: linux-...@vger.kernel.org Cc: linux-...@vger.kernel.org Signed-off-by: Alexander Gordeev --- arch/x86/include/asm/pci.h |3 ++- arch/x86/include/asm/x86_init.h |3 ++- arch/x86/kernel/apic/io_apic.c |2 +- arch/x86/kernel/x86_init.c |2 +- arch/x86

[PATCH 3/3] AHCI: Use pci_enable_msi_partial() to conserve on 10/16 MSIs

-...@vger.kernel.org Signed-off-by: Alexander Gordeev --- drivers/ata/ahci.c |4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c index 6070781..0c7a0f3 100644 --- a/drivers/ata/ahci.c +++ b/drivers/ata/ahci.c @@ -1194,7 +1194,7 @@ static

[PATCH 0/3] Add pci_enable_msi_partial() to conserve MSI-related resources

-...@lists.ozlabs.org Cc: linux-s...@vger.kernel.org Cc: x...@kernel.org Cc: xen-de...@lists.xenproject.org Cc: iommu@lists.linux-foundation.org Cc: linux-...@vger.kernel.org Cc: linux-...@vger.kernel.org Alexander Gordeev (3): PCI/MSI: Add pci_enable_msi_partial() PCI/MSI/x86: Support