Re: [Qemu-devel] 64-bit MMIO aperture expansion

2018-09-25 Thread Michael S. Tsirkin
On Thu, Sep 20, 2018 at 04:49:54PM +0200, Laszlo Ersek wrote: > Hi Marcel, > > this email should actually be an RFC patch. But RFC patches tend to turn > into real PATCHes (if the submitter is lucky, that is), and I can't > really promise sending multiple versions of a PATCH at this time. So > ple

Re: [Qemu-devel] 64-bit MMIO aperture expansion

2018-09-22 Thread Marcel Apfelbaum
Hi Laszlo, Michael On 09/21/2018 08:41 PM, Laszlo Ersek wrote: On 09/21/18 19:20, Michael S. Tsirkin wrote: On Fri, Sep 21, 2018 at 06:01:30PM +0300, Marcel Apfelbaum wrote: On 09/20/2018 05:49 PM, Laszlo Ersek wrote: Now, there's another complication, obviously -- machine type compat. In com

Re: [Qemu-devel] 64-bit MMIO aperture expansion

2018-09-22 Thread Marcel Apfelbaum
Hi Laszlo, On 09/21/2018 08:34 PM, Laszlo Ersek wrote: On 09/21/18 17:01, Marcel Apfelbaum wrote: On 09/20/2018 05:49 PM, Laszlo Ersek wrote: I had to read this mail a few times... Sorry :) Now consider the following scenario: - the firmware programs some BARs with 64-bit addresses such th

Re: [Qemu-devel] 64-bit MMIO aperture expansion

2018-09-21 Thread Laszlo Ersek
On 09/21/18 19:20, Michael S. Tsirkin wrote: > On Fri, Sep 21, 2018 at 06:01:30PM +0300, Marcel Apfelbaum wrote: >> On 09/20/2018 05:49 PM, Laszlo Ersek wrote: >>> Now, there's another complication, obviously -- machine type compat. In >>> commit 9fa99d2519cb, we added the "pci_hole64_fix" compat

Re: [Qemu-devel] 64-bit MMIO aperture expansion

2018-09-21 Thread Laszlo Ersek
On 09/21/18 17:01, Marcel Apfelbaum wrote: > On 09/20/2018 05:49 PM, Laszlo Ersek wrote: > I had to read this mail a few times... Sorry :) >> Now consider the following scenario: >> >> - the firmware programs some BARs with 64-bit addresses such that the >>aperture that we deduce starts at

Re: [Qemu-devel] 64-bit MMIO aperture expansion

2018-09-21 Thread Michael S. Tsirkin
On Fri, Sep 21, 2018 at 06:01:30PM +0300, Marcel Apfelbaum wrote: > > > On 09/20/2018 05:49 PM, Laszlo Ersek wrote: > > Hi Marcel, > > Hi Laszlo, > I had to read this mail a few times... > > > > > this email should actually be an RFC patch. But RFC patches tend to turn > > into real PATCHes (i

Re: [Qemu-devel] 64-bit MMIO aperture expansion

2018-09-21 Thread Marcel Apfelbaum
On 09/20/2018 05:49 PM, Laszlo Ersek wrote: Hi Marcel, Hi Laszlo, I had to read this mail a few times... this email should actually be an RFC patch. But RFC patches tend to turn into real PATCHes (if the submitter is lucky, that is), and I can't really promise sending multiple versions of

[Qemu-devel] 64-bit MMIO aperture expansion

2018-09-20 Thread Laszlo Ersek
Hi Marcel, this email should actually be an RFC patch. But RFC patches tend to turn into real PATCHes (if the submitter is lucky, that is), and I can't really promise sending multiple versions of a PATCH at this time. So please consider this a "maybe bug report". In commit 9fa99d2519cb ("hw/pci-h