Re: [Qemu-devel] host physical address width issues/questions for x86_64

On Thu, Oct 26, 2017 at 04:30:57PM +0800, Peter Xu wrote: > On Mon, Oct 23, 2017 at 10:23:43AM -0700, Prasad Singamsetty wrote: > > [...] > > > >>Proposal: > > >> > > >>We can simply change the VTD_HOST_ADDRESS_WIDTH to 48 bits > > >>with out any other changes to the code. The current set of > >

Re: [Qemu-devel] host physical address width issues/questions for x86_64

On Mon, Oct 23, 2017 at 10:23:43AM -0700, Prasad Singamsetty wrote: [...] > >>Proposal: > >> > >>We can simply change the VTD_HOST_ADDRESS_WIDTH to 48 bits > >>with out any other changes to the code. The current set of > >>features in the intel iommu emulator code works for q35 > >>machine type

Re: [Qemu-devel] host physical address width issues/questions for x86_64

On 10/22/2017 11:37 PM, Peter Xu wrote: On Fri, Oct 20, 2017 at 03:54:21PM -0700, Prasad Singamsetty wrote: On 10/18/2017 8:33 PM, Peter Xu wrote: On Wed, Oct 18, 2017 at 10:19:31AM -0700, Prasad Singamsetty wrote: On 10/16/2017 8:56 PM, Peter Xu wrote: On Mon, Oct 16, 2017 at

Re: [Qemu-devel] host physical address width issues/questions for x86_64

On Fri, Oct 20, 2017 at 03:54:21PM -0700, Prasad Singamsetty wrote: > > > On 10/18/2017 8:33 PM, Peter Xu wrote: > >On Wed, Oct 18, 2017 at 10:19:31AM -0700, Prasad Singamsetty wrote: > >> > >> > >>On 10/16/2017 8:56 PM, Peter Xu wrote: > >>>On Mon, Oct 16, 2017 at 10:02:25AM -0700, Prasad

Re: [Qemu-devel] host physical address width issues/questions for x86_64

On 10/18/2017 8:33 PM, Peter Xu wrote: On Wed, Oct 18, 2017 at 10:19:31AM -0700, Prasad Singamsetty wrote: On 10/16/2017 8:56 PM, Peter Xu wrote: On Mon, Oct 16, 2017 at 10:02:25AM -0700, Prasad Singamsetty wrote: On 10/14/2017 8:53 PM, Peter Xu wrote: On Fri, Oct 13, 2017 at

Re: [Qemu-devel] host physical address width issues/questions for x86_64

On Wed, Oct 18, 2017 at 10:19:31AM -0700, Prasad Singamsetty wrote: > > > On 10/16/2017 8:56 PM, Peter Xu wrote: > >On Mon, Oct 16, 2017 at 10:02:25AM -0700, Prasad Singamsetty wrote: > >> > >> > >>On 10/14/2017 8:53 PM, Peter Xu wrote: > >>>On Fri, Oct 13, 2017 at 11:14:03AM -0600, Alex

Re: [Qemu-devel] host physical address width issues/questions for x86_64

On 10/16/2017 8:56 PM, Peter Xu wrote: On Mon, Oct 16, 2017 at 10:02:25AM -0700, Prasad Singamsetty wrote: On 10/14/2017 8:53 PM, Peter Xu wrote: On Fri, Oct 13, 2017 at 11:14:03AM -0600, Alex Williamson wrote: On Fri, 13 Oct 2017 18:01:44 +0100 "Dr. David Alan Gilbert"

Re: [Qemu-devel] host physical address width issues/questions for x86_64

On Tue, 10/17 11:56, Peter Xu wrote: > I don't sure I know the reason. Anyway, it originated from one of > Fam's request for some NVMe testsr FWIW, I was basically trying to test a driver code under development with 48bit vIOMMU. I ended up using real hardware and also made the code compatible

Re: [Qemu-devel] host physical address width issues/questions for x86_64

On Mon, Oct 16, 2017 at 10:02:25AM -0700, Prasad Singamsetty wrote: > > > On 10/14/2017 8:53 PM, Peter Xu wrote: > >On Fri, Oct 13, 2017 at 11:14:03AM -0600, Alex Williamson wrote: > >>On Fri, 13 Oct 2017 18:01:44 +0100 > >>"Dr. David Alan Gilbert" wrote: > >> > >>>* Prasad

Re: [Qemu-devel] host physical address width issues/questions for x86_64

On 10/13/2017 10:14 AM, Alex Williamson wrote: On Fri, 13 Oct 2017 18:01:44 +0100 "Dr. David Alan Gilbert" wrote: * Prasad Singamsetty (prasad.singamse...@oracle.com) wrote: Hi, I am new to the alias. I have some questions on this subject and seek some clarifications

Re: [Qemu-devel] host physical address width issues/questions for x86_64

On 10/14/2017 8:53 PM, Peter Xu wrote: On Fri, Oct 13, 2017 at 11:14:03AM -0600, Alex Williamson wrote: On Fri, 13 Oct 2017 18:01:44 +0100 "Dr. David Alan Gilbert" wrote: * Prasad Singamsetty (prasad.singamse...@oracle.com) wrote: Hi, I am new to the alias. I have

Re: [Qemu-devel] host physical address width issues/questions for x86_64

On 10/13/2017 10:01 AM, Dr. David Alan Gilbert wrote: * Prasad Singamsetty (prasad.singamse...@oracle.com) wrote: Hi, I am new to the alias. I have some questions on this subject and seek some clarifications from the experts in the team. I ran into a couple of issues when I tried with large

Re: [Qemu-devel] host physical address width issues/questions for x86_64

On Fri, Oct 13, 2017 at 11:14:03AM -0600, Alex Williamson wrote: > On Fri, 13 Oct 2017 18:01:44 +0100 > "Dr. David Alan Gilbert" wrote: > > > * Prasad Singamsetty (prasad.singamse...@oracle.com) wrote: > > > Hi, > > > > > > I am new to the alias. I have some questions on

Re: [Qemu-devel] host physical address width issues/questions for x86_64

On Fri, 13 Oct 2017 18:01:44 +0100 "Dr. David Alan Gilbert" wrote: > * Prasad Singamsetty (prasad.singamse...@oracle.com) wrote: > > Hi, > > > > I am new to the alias. I have some questions on this subject > > and seek some clarifications from the experts in the team. > > I

Re: [Qemu-devel] host physical address width issues/questions for x86_64

* Prasad Singamsetty (prasad.singamse...@oracle.com) wrote: > Hi, > > I am new to the alias. I have some questions on this subject > and seek some clarifications from the experts in the team. > I ran into a couple of issues when I tried with large configuration > ( >= 1TB memory, > 255 CPUs) for

[Qemu-devel] host physical address width issues/questions for x86_64

Hi, I am new to the alias. I have some questions on this subject and seek some clarifications from the experts in the team. I ran into a couple of issues when I tried with large configuration ( >= 1TB memory, > 255 CPUs) for x86_64 guest machine. 1. QEMU uses the default value of 40