Hi Jacob,
On Wed, Feb 09, 2022 at 01:52:49PM -0800, Jacob Pan wrote:
> Another option Ashok and I discussed is that we can make DMAR cache persist
> (which should be for explicitly listed devices in each DRHD) across PCI
> remove-rescan cycle, then we don't need the DMAR PCI bus notifier at all.
Hi Joerg,
On Thu, 3 Feb 2022 09:25:58 +0100, Joerg Roedel wrote:
> On Tue, Feb 01, 2022 at 11:19:18AM -0800, Jacob Pan wrote:
> > Do you mean having an IRQ remapping notifier regardless IOMMU-API is
> > enabled, right?
> > It make sense, I will give it a try.
>
> Yeah, that would be best. I
On Tue, Feb 01, 2022 at 11:19:18AM -0800, Jacob Pan wrote:
> Do you mean having an IRQ remapping notifier regardless IOMMU-API is
> enabled, right?
> It make sense, I will give it a try.
Yeah, that would be best. I really don't like to use two notifiers just
to work around ordering issues.
Hi Joerg,
On Mon, 31 Jan 2022 16:52:10 +0100, Joerg Roedel wrote:
> On Mon, Jan 31, 2022 at 01:53:06PM +, Robin Murphy wrote:
> > Indeed I very nearly asked whether we couldn't just call these from
> > intel_iommu_{probe,release}_device() directly, but it looks like they
> > also interact
Hi Joerg,
On Sun, 30 Jan 2022 08:43:19 +0100, Joerg Roedel wrote:
> Hi Jacob, Baolu,
>
> On Fri, Jan 28, 2022 at 11:10:01AM +0800, Lu Baolu wrote:
> > During PCI bus rescan, adding new devices involve two notifiers.
> > 1. dmar_pci_bus_notifier()
> > 2. iommu_bus_notifier()
> > The current
On Mon, Jan 31, 2022 at 01:53:06PM +, Robin Murphy wrote:
> Indeed I very nearly asked whether we couldn't just call these from
> intel_iommu_{probe,release}_device() directly, but it looks like they also
> interact with the interrupt remapping stuff which can be built independently
> of the
On 2022-01-30 07:43, Joerg Roedel wrote:
Hi Jacob, Baolu,
On Fri, Jan 28, 2022 at 11:10:01AM +0800, Lu Baolu wrote:
During PCI bus rescan, adding new devices involve two notifiers.
1. dmar_pci_bus_notifier()
2. iommu_bus_notifier()
The current code sets #1 as low priority (INT_MIN) which
Hi Jacob, Baolu,
On Fri, Jan 28, 2022 at 11:10:01AM +0800, Lu Baolu wrote:
> During PCI bus rescan, adding new devices involve two notifiers.
> 1. dmar_pci_bus_notifier()
> 2. iommu_bus_notifier()
> The current code sets #1 as low priority (INT_MIN) which resulted in #2
> being invoked first. The
From: Jacob Pan
During PCI bus rescan, adding new devices involve two notifiers.
1. dmar_pci_bus_notifier()
2. iommu_bus_notifier()
The current code sets #1 as low priority (INT_MIN) which resulted in #2
being invoked first. The result is that struct device pointer cannot be
found in DRHD search
