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Message-ID: <20241029112611.GA3881@willie-the-truck>
Date: Tue, 29 Oct 2024 11:26:12 +0000
From: Will Deacon <will@...nel.org>
To: Joerg Roedel <joro@...tes.org>
Cc: iommu@...ts.linux.dev, linux-kernel@...r.kernel.org,
	Joerg Roedel <jroedel@...e.de>, Jason Gunthorpe <jgg@...pe.ca>
Subject: Re: [PATCH] iommu: Restore iommu_flush_iotlb_all()

On Tue, Oct 29, 2024 at 12:23:02PM +0100, Joerg Roedel wrote:
> From: Joerg Roedel <jroedel@...e.de>
> 
> This patch restores the iommu_flush_iotlb_all() function.
> Commit
> 
> 	69e5a17511f6 ("iommu: Remove useless flush from iommu_create_device_direct_mappings()")
> 
> claims it removed the last call-site, except it did not. There is still
> at least one caller in
> 
> 	drivers/gpu/drm/msm/msm_iommu.c
> 
> so keep the function around until all call-sites are updated.
> 
> Cc: Jason Gunthorpe <jgg@...pe.ca>
> Fixes: 69e5a17511f6 ("iommu: Remove useless flush from iommu_create_device_direct_mappings()")
> Signed-off-by: Joerg Roedel <jroedel@...e.de>
> ---
>  include/linux/iommu.h | 10 ++++++++++
>  1 file changed, 10 insertions(+)

Acked-by: Will Deacon <will@...nel.org>

Will

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