On Mon, Sep 10, 2007 at 11:25:43PM +0300, Muli Ben-Yehuda wrote:
> On Tue, Sep 11, 2007 at 10:42:31AM -0700, Keshavamurthy, Anil S wrote:
>
> > Yes, I agree that pci_dev->sysdata can;t be removed. Even we (IOMMU)
> > were dependent on this field but somehow this field is being
> > overwritten to
On Tue, Sep 11, 2007 at 10:42:31AM -0700, Keshavamurthy, Anil S wrote:
> Yes, I agree that pci_dev->sysdata can;t be removed. Even we (IOMMU)
> were dependent on this field but somehow this field is being
> overwritten to point to pci_bus's->sysdata and hence IOMMU was
> failing. Earlier it was
On Mon, Sep 10, 2007 at 03:37:48AM +1000, Paul Mackerras wrote:
> Keshavamurthy, Anil S writes:
>
> > Subject: [RFC][Intel-IOMMU] Fix for IOMMU early crash
> >
> > Populating pci_bus->sysdata way early in the pci discovery phase
> > sets NON-NULL value
rthy, Anil S wrote:
> > >
> > > > Subject: [RFC][Intel-IOMMU] Fix for IOMMU early crash
> > >
> > > This patch feels like a huge hack. See below.
> >
> > You seem to be jumping to conclusion without going in detail. The
> > pci_dev struct contains pointer t
: [RFC][Intel-IOMMU] Fix for IOMMU early crash
This patch feels like a huge hack. See below.
You seem to be jumping to conclusion without going in detail. The
pci_dev struct contains pointer to sysdata, which in turn points to
the copy of its parent's bus sysdata. So technically speaking
On Mon, Sep 10, 2007 at 03:37:48AM +1000, Paul Mackerras wrote:
Keshavamurthy, Anil S writes:
Subject: [RFC][Intel-IOMMU] Fix for IOMMU early crash
Populating pci_bus-sysdata way early in the pci discovery phase
sets NON-NULL value to pci_dev-sysdata which breaks the assumption
On Tue, Sep 11, 2007 at 10:42:31AM -0700, Keshavamurthy, Anil S wrote:
Yes, I agree that pci_dev-sysdata can;t be removed. Even we (IOMMU)
were dependent on this field but somehow this field is being
overwritten to point to pci_bus's-sysdata and hence IOMMU was
failing. Earlier it was
On Mon, Sep 10, 2007 at 11:25:43PM +0300, Muli Ben-Yehuda wrote:
On Tue, Sep 11, 2007 at 10:42:31AM -0700, Keshavamurthy, Anil S wrote:
Yes, I agree that pci_dev-sysdata can;t be removed. Even we (IOMMU)
were dependent on this field but somehow this field is being
overwritten to point to
Keshavamurthy, Anil S writes:
> Subject: [RFC][Intel-IOMMU] Fix for IOMMU early crash
>
> Populating pci_bus->sysdata way early in the pci discovery phase
> sets NON-NULL value to pci_dev->sysdata which breaks the assumption
> in the Intel IOMMU driver a
On Mon, Sep 10, 2007 at 08:43:59AM -0700, Keshavamurthy, Anil S wrote:
> On Sun, Sep 09, 2007 at 02:16:19PM +0300, Muli Ben-Yehuda wrote:
> > On Sat, Sep 08, 2007 at 01:05:24PM -0700, Keshavamurthy, Anil S wrote:
> >
> > > Subject: [RFC][Intel-IOMMU] Fix for IOMMU early c
On Sun, Sep 09, 2007 at 02:16:19PM +0300, Muli Ben-Yehuda wrote:
> On Sat, Sep 08, 2007 at 01:05:24PM -0700, Keshavamurthy, Anil S wrote:
>
> > Subject: [RFC][Intel-IOMMU] Fix for IOMMU early crash
>
> This patch feels like a huge hack. See below.
You seem to be jumping to
On Sat, Sep 08, 2007 at 01:05:24PM -0700, Keshavamurthy, Anil S wrote:
> Subject: [RFC][Intel-IOMMU] Fix for IOMMU early crash
This patch feels like a huge hack. See below.
> This patch removes sysdata from pci_dev struct and creates a new
> field called sys_data which is exclusi
On Sat, Sep 08, 2007 at 01:05:24PM -0700, Keshavamurthy, Anil S wrote:
Subject: [RFC][Intel-IOMMU] Fix for IOMMU early crash
This patch feels like a huge hack. See below.
This patch removes sysdata from pci_dev struct and creates a new
field called sys_data which is exclusively used by IOMMU
On Sun, Sep 09, 2007 at 02:16:19PM +0300, Muli Ben-Yehuda wrote:
On Sat, Sep 08, 2007 at 01:05:24PM -0700, Keshavamurthy, Anil S wrote:
Subject: [RFC][Intel-IOMMU] Fix for IOMMU early crash
This patch feels like a huge hack. See below.
You seem to be jumping to conclusion without going
On Mon, Sep 10, 2007 at 08:43:59AM -0700, Keshavamurthy, Anil S wrote:
On Sun, Sep 09, 2007 at 02:16:19PM +0300, Muli Ben-Yehuda wrote:
On Sat, Sep 08, 2007 at 01:05:24PM -0700, Keshavamurthy, Anil S wrote:
Subject: [RFC][Intel-IOMMU] Fix for IOMMU early crash
This patch feels like
Keshavamurthy, Anil S writes:
Subject: [RFC][Intel-IOMMU] Fix for IOMMU early crash
Populating pci_bus-sysdata way early in the pci discovery phase
sets NON-NULL value to pci_dev-sysdata which breaks the assumption
in the Intel IOMMU driver and crashes the system.
In the drivers/pci
Subject: [RFC][Intel-IOMMU] Fix for IOMMU early crash
Populating pci_bus->sysdata way early in the pci discovery phase
sets NON-NULL value to pci_dev->sysdata which breaks the assumption
in the Intel IOMMU driver and crashes the system.
In the drivers/pci/probe.c, pci_dev->sysdata ge
Subject: [RFC][Intel-IOMMU] Fix for IOMMU early crash
Populating pci_bus-sysdata way early in the pci discovery phase
sets NON-NULL value to pci_dev-sysdata which breaks the assumption
in the Intel IOMMU driver and crashes the system.
In the drivers/pci/probe.c, pci_dev-sysdata gets a copy
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