Re: [PATCH v6 RESED 1/2] dma: replace zone_dma_bits by zone_dma_limit

2024-08-29 Thread neil . armstrong
Hi Robin, On 29/08/2024 16:38, Robin Murphy wrote: On 2024-08-29 2:42 pm, Neil Armstrong wrote: Hi, On 11/08/2024 09:09, Baruch Siach wrote: From: Catalin Marinas Hardware DMA limit might not be power of 2. When RAM range starts above 0, say 4GB, DMA limit of 30 bits should end at 5GB. A si

Re: [PATCH v6 RESED 1/2] dma: replace zone_dma_bits by zone_dma_limit

2024-08-29 Thread Robin Murphy
On 2024-08-29 2:42 pm, Neil Armstrong wrote: Hi, On 11/08/2024 09:09, Baruch Siach wrote: From: Catalin Marinas Hardware DMA limit might not be power of 2. When RAM range starts above 0, say 4GB, DMA limit of 30 bits should end at 5GB. A single high bit can not encode this limit. Use plain a

Re: [PATCH v6 RESED 1/2] dma: replace zone_dma_bits by zone_dma_limit

2024-08-29 Thread Neil Armstrong
Hi, On 11/08/2024 09:09, Baruch Siach wrote: From: Catalin Marinas Hardware DMA limit might not be power of 2. When RAM range starts above 0, say 4GB, DMA limit of 30 bits should end at 5GB. A single high bit can not encode this limit. Use plain address for DMA zone limit. Since DMA zone can

Re: [PATCH v6 RESED 1/2] dma: replace zone_dma_bits by zone_dma_limit

2024-08-27 Thread Marek Szyprowski
On 27.08.2024 09:03, Baruch Siach wrote: > On Tue, Aug 27 2024, Marek Szyprowski wrote: >> On 27.08.2024 06:52, Baruch Siach wrote: >>> Hi Marek, >>> >>> Thanks for your report. >>> >>> On Mon, Aug 26 2024, Marek Szyprowski wrote: On 11.08.2024 09:09, Baruch Siach wrote: > From: Catalin Ma

Re: [PATCH v6 RESED 1/2] dma: replace zone_dma_bits by zone_dma_limit

2024-08-27 Thread Baruch Siach
Hi Marek, On Tue, Aug 27 2024, Marek Szyprowski wrote: > On 27.08.2024 06:52, Baruch Siach wrote: >> Hi Marek, >> >> Thanks for your report. >> >> On Mon, Aug 26 2024, Marek Szyprowski wrote: >>> On 11.08.2024 09:09, Baruch Siach wrote: From: Catalin Marinas Hardware DMA limit migh

Re: [PATCH v6 RESED 1/2] dma: replace zone_dma_bits by zone_dma_limit

2024-08-26 Thread Marek Szyprowski
On 27.08.2024 06:52, Baruch Siach wrote: > Hi Marek, > > Thanks for your report. > > On Mon, Aug 26 2024, Marek Szyprowski wrote: >> On 11.08.2024 09:09, Baruch Siach wrote: >>> From: Catalin Marinas >>> >>> Hardware DMA limit might not be power of 2. When RAM range starts above >>> 0, say 4GB, DM

Re: [PATCH v6 RESED 1/2] dma: replace zone_dma_bits by zone_dma_limit

2024-08-26 Thread Baruch Siach
Hi Marek, Thanks for your report. On Mon, Aug 26 2024, Marek Szyprowski wrote: > On 11.08.2024 09:09, Baruch Siach wrote: >> From: Catalin Marinas >> >> Hardware DMA limit might not be power of 2. When RAM range starts above >> 0, say 4GB, DMA limit of 30 bits should end at 5GB. A single high bi

Re: [PATCH v6 RESED 1/2] dma: replace zone_dma_bits by zone_dma_limit

2024-08-26 Thread Marek Szyprowski
Dear All, On 11.08.2024 09:09, Baruch Siach wrote: > From: Catalin Marinas > > Hardware DMA limit might not be power of 2. When RAM range starts above > 0, say 4GB, DMA limit of 30 bits should end at 5GB. A single high bit > can not encode this limit. > > Use plain address for DMA zone limit. > >

Re: [PATCH v6 RESED 1/2] dma: replace zone_dma_bits by zone_dma_limit

2024-08-16 Thread Petr Tesařík
On Fri, 16 Aug 2024 12:52:47 +0100 Will Deacon wrote: > On Sun, Aug 11, 2024 at 10:09:35AM +0300, Baruch Siach wrote: > > From: Catalin Marinas > > > > Hardware DMA limit might not be power of 2. When RAM range starts above > > 0, say 4GB, DMA limit of 30 bits should end at 5GB. A single high b

Re: [PATCH v6 RESED 1/2] dma: replace zone_dma_bits by zone_dma_limit

2024-08-16 Thread Will Deacon
On Sun, Aug 11, 2024 at 10:09:35AM +0300, Baruch Siach wrote: > From: Catalin Marinas > > Hardware DMA limit might not be power of 2. When RAM range starts above > 0, say 4GB, DMA limit of 30 bits should end at 5GB. A single high bit > can not encode this limit. > > Use plain address for DMA zon

Re: [PATCH v6 RESED 1/2] dma: replace zone_dma_bits by zone_dma_limit

2024-08-12 Thread Catalin Marinas
On Sun, Aug 11, 2024 at 10:09:35AM +0300, Baruch Siach wrote: > From: Catalin Marinas > > Hardware DMA limit might not be power of 2. When RAM range starts above > 0, say 4GB, DMA limit of 30 bits should end at 5GB. A single high bit > can not encode this limit. > > Use plain address for DMA zon

Re: [PATCH v6 RESED 1/2] dma: replace zone_dma_bits by zone_dma_limit

2024-08-11 Thread Petr Tesarik
On Sun, 11 Aug 2024 10:09:35 +0300 Baruch Siach wrote: > From: Catalin Marinas > > Hardware DMA limit might not be power of 2. When RAM range starts above > 0, say 4GB, DMA limit of 30 bits should end at 5GB. A single high bit > can not encode this limit. > > Use plain address for DMA zone lim