From: Michael Ellerman <patch-notifications@ellerman.id.au>
To: Alexey Kardashevskiy <aik@ozlabs.ru>, linuxppc-dev@lists.ozlabs.org
Cc: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>,
Leonardo Bras <leobras.c@gmail.com>,
Andrew Donnellan <ajd@linux.ibm.com>,
Frederic Barrat <fbarrat@linux.ibm.com>
Subject: Re: [PATCH kernel v2] pseries/iommu/ddw: Fix kdump to work in absence of ibm,dma-window
Date: Fri, 29 Jul 2022 23:02:51 +1000 [thread overview]
Message-ID: <165909977150.253830.4573134506438140160.b4-ty@ellerman.id.au> (raw)
In-Reply-To: <20220629060614.1680476-1-aik@ozlabs.ru>
On Wed, 29 Jun 2022 16:06:14 +1000, Alexey Kardashevskiy wrote:
> The pseries platform uses 32bit default DMA window (always 4K pages) and
> optional 64bit DMA window available via DDW ("Dynamic DMA Windows"),
> 64K or 2M pages. For ages the default one was not removed and a huge
> window was created in addition. Things changed with SRIOV-enabled
> PowerVM which creates a default-and-bigger DMA window in 64bit space
> (still using 4K pages) for IOV VFs so certain OSes do not need to use
> the DDW API in order to utilize all available TCE budget.
>
> [...]
Applied to powerpc/next.
[1/1] pseries/iommu/ddw: Fix kdump to work in absence of ibm,dma-window
https://git.kernel.org/powerpc/c/b1fc44eaa9ba31e28c4125d6b9205a3582b47b5d
cheers
next prev parent reply other threads:[~2022-07-29 13:11 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-29 6:06 [PATCH kernel v2] pseries/iommu/ddw: Fix kdump to work in absence of ibm,dma-window Alexey Kardashevskiy
2022-07-14 7:59 ` Hari Bathini
2022-07-29 13:02 ` Michael Ellerman [this message]
2022-08-08 16:48 ` Nathan Chancellor
2022-08-08 16:48 ` Nathan Chancellor
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