From: Alexander Graf <agraf@suse.de>
To: Alexey Kardashevskiy <aik@ozlabs.ru>, qemu-devel@nongnu.org
Cc: qemu-ppc@nongnu.org, David Gibson <david@gibson.dropbear.id.au>
Subject: Re: [Qemu-devel] [PATCH v3] spapr_vio/spapr_iommu: Move VIO bypass where it belongs
Date: Thu, 29 Jan 2015 14:08:06 +0100 [thread overview]
Message-ID: <54CA30B6.6040607@suse.de> (raw)
In-Reply-To: <1422507898-4348-1-git-send-email-aik@ozlabs.ru>
On 29.01.15 06:04, Alexey Kardashevskiy wrote:
> Instead of tweaking a TCE table device by adding there a bypass flag,
> let's add an alias to RAM and IOMMU memory region, and enable/disable
> those according to the selected bypass mode.
> This way IOMMU memory region can have size of the actual window rather
> than ram_size which is essential for upcoming DDW support.
>
> This moves bypass logic to VIO layer and keeps @bypass flag in TCE table
> for migration compatibility only. This replaces spapr_tce_set_bypass()
> calls with explicit assignment to avoid confusion as the function could
> do something more that just syncing the @bypass flag.
>
> This adds a pointer to VIO device into the sPAPRTCETable struct to provide
> the sPAPRTCETable device a way to update bypass mode for the VIO device.
>
> Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Thanks, applied to ppc-next.
Alex
prev parent reply other threads:[~2015-01-29 13:08 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-29 5:04 [Qemu-devel] [PATCH v3] spapr_vio/spapr_iommu: Move VIO bypass where it belongs Alexey Kardashevskiy
2015-01-29 5:47 ` David Gibson
2015-01-29 13:08 ` Alexander Graf [this message]
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