From: Stefano Stabellini <sstabellini@kernel.org>
To: jgross@suse.com, boris.ostrovsky@oracle.com, konrad.wilk@oracle.com
Cc: xen-devel@lists.xenproject.org, linux-kernel@vger.kernel.org,
tamas@tklengyel.com, roman@zededa.com, sstabellini@kernel.org
Subject: Re: [PATCH 00/10] fix swiotlb-xen for RPi4
Date: Tue, 2 Jun 2020 14:51:02 -0700 (PDT) [thread overview]
Message-ID: <alpine.DEB.2.21.2006021447340.6774@sstabellini-ThinkPad-T480s> (raw)
In-Reply-To: <alpine.DEB.2.21.2005201628330.27502@sstabellini-ThinkPad-T480s>
I would like to ask the maintainers, Juergen, Boris, Konrad, whether you
have any more feedback before I send v2 of the series.
Cheers,
Stefano
On Wed, 20 May 2020, Stefano Stabellini wrote:
> Hi all,
>
> This series is a collection of fixes to get Linux running on the RPi4 as
> dom0.
>
> Conceptually there are only two significant changes:
>
> - make sure not to call virt_to_page on vmalloc virt addresses (patch
> #1)
> - use phys_to_dma and dma_to_phys to translate phys to/from dma
> addresses (all other patches)
>
> In particular in regards to the second part, the RPi4 is the first
> board where Xen can run that has the property that dma addresses are
> different from physical addresses, and swiotlb-xen was written with the
> assumption that phys addr == dma addr.
>
> This series adds the phys_to_dma and dma_to_phys calls to make it work.
>
>
> Cheers,
>
> Stefano
>
WARNING: multiple messages have this Message-ID (diff)
From: Stefano Stabellini <sstabellini@kernel.org>
To: jgross@suse.com, boris.ostrovsky@oracle.com, konrad.wilk@oracle.com
Cc: xen-devel@lists.xenproject.org, tamas@tklengyel.com,
sstabellini@kernel.org, linux-kernel@vger.kernel.org,
roman@zededa.com
Subject: Re: [PATCH 00/10] fix swiotlb-xen for RPi4
Date: Tue, 2 Jun 2020 14:51:02 -0700 (PDT) [thread overview]
Message-ID: <alpine.DEB.2.21.2006021447340.6774@sstabellini-ThinkPad-T480s> (raw)
In-Reply-To: <alpine.DEB.2.21.2005201628330.27502@sstabellini-ThinkPad-T480s>
I would like to ask the maintainers, Juergen, Boris, Konrad, whether you
have any more feedback before I send v2 of the series.
Cheers,
Stefano
On Wed, 20 May 2020, Stefano Stabellini wrote:
> Hi all,
>
> This series is a collection of fixes to get Linux running on the RPi4 as
> dom0.
>
> Conceptually there are only two significant changes:
>
> - make sure not to call virt_to_page on vmalloc virt addresses (patch
> #1)
> - use phys_to_dma and dma_to_phys to translate phys to/from dma
> addresses (all other patches)
>
> In particular in regards to the second part, the RPi4 is the first
> board where Xen can run that has the property that dma addresses are
> different from physical addresses, and swiotlb-xen was written with the
> assumption that phys addr == dma addr.
>
> This series adds the phys_to_dma and dma_to_phys calls to make it work.
>
>
> Cheers,
>
> Stefano
>
next prev parent reply other threads:[~2020-06-02 21:51 UTC|newest]
Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-20 23:45 [PATCH 00/10] fix swiotlb-xen for RPi4 Stefano Stabellini
2020-05-20 23:45 ` Stefano Stabellini
2020-05-20 23:45 ` [PATCH 01/10] swiotlb-xen: use vmalloc_to_page on vmalloc virt addresses Stefano Stabellini
2020-05-20 23:45 ` Stefano Stabellini
2020-05-21 8:01 ` Julien Grall
2020-05-21 8:01 ` Julien Grall
2020-05-22 3:54 ` Stefano Stabellini
2020-05-22 3:54 ` Stefano Stabellini
2020-05-22 18:11 ` Julien Grall
2020-05-22 18:11 ` Julien Grall
2020-05-22 20:36 ` Stefano Stabellini
2020-05-22 20:36 ` Stefano Stabellini
2020-05-20 23:45 ` [PATCH 02/10] swiotlb-xen: remove start_dma_addr Stefano Stabellini
2020-05-20 23:45 ` Stefano Stabellini
2020-05-21 8:05 ` Julien Grall
2020-05-21 8:05 ` Julien Grall
2020-05-22 3:55 ` Stefano Stabellini
2020-05-22 3:55 ` Stefano Stabellini
2020-05-22 18:16 ` Julien Grall
2020-05-22 18:16 ` Julien Grall
2020-05-22 20:47 ` Stefano Stabellini
2020-05-22 20:47 ` Stefano Stabellini
2020-05-20 23:45 ` [PATCH 03/10] swiotlb-xen: add struct device* parameter to xen_phys_to_bus Stefano Stabellini
2020-05-20 23:45 ` Stefano Stabellini
2020-05-20 23:45 ` [PATCH 04/10] swiotlb-xen: add struct device* parameter to xen_bus_to_phys Stefano Stabellini
2020-05-20 23:45 ` Stefano Stabellini
2020-05-20 23:45 ` [PATCH 05/10] swiotlb-xen: add struct device* parameter to xen_dma_sync_for_cpu Stefano Stabellini
2020-05-20 23:45 ` Stefano Stabellini
2020-05-20 23:45 ` [PATCH 06/10] swiotlb-xen: add struct device* parameter to xen_dma_sync_for_device Stefano Stabellini
2020-05-20 23:45 ` Stefano Stabellini
2020-05-20 23:45 ` [PATCH 07/10] swiotlb-xen: add struct device* parameter to is_xen_swiotlb_buffer Stefano Stabellini
2020-05-20 23:45 ` Stefano Stabellini
2020-05-20 23:45 ` [PATCH 08/10] swiotlb-xen: introduce phys_to_dma/dma_to_phys translations Stefano Stabellini
2020-05-20 23:45 ` Stefano Stabellini
2020-05-21 8:07 ` Julien Grall
2020-05-21 8:07 ` Julien Grall
2020-05-21 22:59 ` Boris Ostrovsky
2020-05-21 22:59 ` Boris Ostrovsky
2020-05-22 17:34 ` Stefano Stabellini
2020-05-22 17:34 ` Stefano Stabellini
2020-05-22 18:29 ` Boris Ostrovsky
2020-05-22 18:29 ` Boris Ostrovsky
2020-05-20 23:45 ` [PATCH 09/10] xen/arm: introduce phys/dma translations in xen_dma_sync_for_* Stefano Stabellini
2020-05-20 23:45 ` Stefano Stabellini
2020-05-21 8:18 ` Julien Grall
2020-05-21 8:18 ` Julien Grall
2020-05-21 20:08 ` Stefano Stabellini
2020-05-21 20:08 ` Stefano Stabellini
2020-05-21 20:17 ` Julien Grall
2020-05-21 20:17 ` Julien Grall
2020-05-20 23:45 ` [PATCH 10/10] xen/arm: call dma_to_phys on the dma_addr_t parameter of dma_cache_maint Stefano Stabellini
2020-05-20 23:45 ` Stefano Stabellini
2020-05-21 8:25 ` Julien Grall
2020-05-21 8:25 ` Julien Grall
2020-05-20 23:51 ` [PATCH 00/10] fix swiotlb-xen for RPi4 Roman Shaposhnik
2020-05-20 23:51 ` Roman Shaposhnik
2020-05-20 23:56 ` Stefano Stabellini
2020-05-20 23:56 ` Stefano Stabellini
2020-06-02 21:51 ` Stefano Stabellini [this message]
2020-06-02 21:51 ` Stefano Stabellini
2020-06-03 0:15 ` Boris Ostrovsky
2020-06-03 0:15 ` Boris Ostrovsky
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