Re: [PATCH] hw/arm/virt: Support larger highmem MMIO regions

2025-01-31 Thread Matt Ochs
hs ; Shameerali Kolothum Thodi >>> >>> Cc: qemu-devel@nongnu.org; Nathan Chen ; >>> ddut...@redhat.com; Nicolin Chen ; Ankit Agrawal >>> >>> Subject: Re: [PATCH] hw/arm/virt: Support larger highmem MMIO regions >> >>>>>>> +if

Re: [PATCH] hw/arm/virt: Support larger highmem MMIO regions

2025-01-29 Thread Matt Ochs
On Jan 29, 2025, at 2:25 AM, Philippe Mathieu-Daudé wrote: Hi Matthew, On 28/1/25 17:02, Matthew R. Ochs wrote: The MMIO region size required to support virtualized environments with large PCI BAR regions can exceed the hardcoded limit configured in QEMU. For example, a VM with multiple NVIDIA

Re: [PATCH] hw/arm/virt: Support larger highmem MMIO regions

2025-01-29 Thread Philippe Mathieu-Daudé
Hi Matthew, On 28/1/25 17:02, Matthew R. Ochs wrote: The MMIO region size required to support virtualized environments with large PCI BAR regions can exceed the hardcoded limit configured in QEMU. For example, a VM with multiple NVIDIA Grace-Hopper GPUs passed through requires more MMIO memory t

Re: [PATCH] hw/arm/virt: Support larger highmem MMIO regions

2025-01-29 Thread Eric Auger
n ; >> ddut...@redhat.com; Nicolin Chen ; Ankit Agrawal >> >> Subject: Re: [PATCH] hw/arm/virt: Support larger highmem MMIO regions > >>>>>> +if (size < extended_memmap[VIRT_HIGH_PCIE_MMIO].size) { >>>>> Not sure it is better to fallback to

RE: [PATCH] hw/arm/virt: Support larger highmem MMIO regions

2025-01-29 Thread Shameerali Kolothum Thodi via
> -Original Message- > From: Eric Auger > Sent: Wednesday, January 29, 2025 7:56 AM > To: Matt Ochs ; Shameerali Kolothum Thodi > > Cc: qemu-devel@nongnu.org; Nathan Chen ; > ddut...@redhat.com; Nicolin Chen ; Ankit Agrawal > > Subject: Re: [PATCH] hw/arm/v

Re: [PATCH] hw/arm/virt: Support larger highmem MMIO regions

2025-01-28 Thread Eric Auger
Hi, On 1/28/25 10:28 PM, Matt Ochs wrote: >> On Jan 28, 2025, at 11:52 AM, Eric Auger wrote: >> >> Hi Matthew, Shameer, >> >> On 1/28/25 6:36 PM, Shameerali Kolothum Thodi wrote: -Original Message- From: Matthew R. Ochs Sent: Tuesday, January 28, 2025 4:03 PM To: qem

Re: [PATCH] hw/arm/virt: Support larger highmem MMIO regions

2025-01-28 Thread Matt Ochs
> On Jan 28, 2025, at 11:52 AM, Eric Auger wrote: > > Hi Matthew, Shameer, > > On 1/28/25 6:36 PM, Shameerali Kolothum Thodi wrote: >> >>> -Original Message- >>> From: Matthew R. Ochs >>> Sent: Tuesday, January 28, 2025 4:03 PM >>> To: qemu-devel@nongnu.org; Shameerali Kolothum Thodi >

Re: [PATCH] hw/arm/virt: Support larger highmem MMIO regions

2025-01-28 Thread Eric Auger
Hi Matthew, Shameer, On 1/28/25 6:36 PM, Shameerali Kolothum Thodi wrote: > >> -Original Message- >> From: Matthew R. Ochs >> Sent: Tuesday, January 28, 2025 4:03 PM >> To: qemu-devel@nongnu.org; Shameerali Kolothum Thodi >> ; nath...@nvidia.com >> Cc: ddut...@redhat.com; eric.au...@redh

RE: [PATCH] hw/arm/virt: Support larger highmem MMIO regions

2025-01-28 Thread Shameerali Kolothum Thodi via
> -Original Message- > From: Matthew R. Ochs > Sent: Tuesday, January 28, 2025 4:03 PM > To: qemu-devel@nongnu.org; Shameerali Kolothum Thodi > ; nath...@nvidia.com > Cc: ddut...@redhat.com; eric.au...@redhat.com; nicol...@nvidia.com; > ank...@nvidia.com > Subject: [PATCH] hw/arm/virt: