From: Leon Romanovsky <leon@kernel.org>
To: Christoph Hellwig <hch@lst.de>
Cc: Jens Axboe <axboe@kernel.dk>, Keith Busch <kbusch@kernel.org>,
Sagi Grimberg <sagi@grimberg.me>,
linux-block@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-nvme@lists.infradead.org
Subject: Re: [PATCH v3 2/2] block-dma: properly take MMIO path
Date: Mon, 27 Oct 2025 10:22:15 +0200 [thread overview]
Message-ID: <20251027082215.GH12554@unreal> (raw)
In-Reply-To: <20251027081658.GA15229@lst.de>
On Mon, Oct 27, 2025 at 09:16:58AM +0100, Christoph Hellwig wrote:
> On Mon, Oct 27, 2025 at 10:11:42AM +0200, Leon Romanovsky wrote:
> > BTW, one can reorganize pci_p2pdma_map_type to make sure that
> > PCI_P2PDMA_MAP_BUS_ADDR will be 2 and PCI_P2PDMA_MAP_THRU_HOST_BRIDGE
> > will be 3, so it will be possible to take 2 bits per-type instead of 3.
>
> Maybe. I'd be happy to leave this as-is and then see if we can optimize
> things once we grow more users.
Completely agree, thanks for the patience and review.
prev parent reply other threads:[~2025-10-27 8:22 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-27 7:30 [PATCH v3 0/2] block: Enable proper MMIO memory handling for P2P DMA Leon Romanovsky
2025-10-27 7:30 ` [PATCH v3 1/2] nvme-pci: migrate to dma_map_phys instead of map_page Leon Romanovsky
2025-10-27 7:30 ` [PATCH v3 2/2] block-dma: properly take MMIO path Leon Romanovsky
2025-10-27 7:49 ` Christoph Hellwig
2025-10-27 7:57 ` Leon Romanovsky
2025-10-27 8:11 ` Leon Romanovsky
2025-10-27 8:16 ` Christoph Hellwig
2025-10-27 8:22 ` Leon Romanovsky [this message]
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