From: sashiko-bot@kernel.org
To: "Koichiro Den" <den@valinux.co.jp>
Cc: linux-pci@vger.kernel.org, ntb@lists.linux.dev
Subject: Re: [PATCH 01/11] NTB: Add atomic MW translation group operations
Date: Mon, 03 Aug 2026 18:10:30 +0000 [thread overview]
Message-ID: <20260803181030.EFF6B1F000E9@smtp.kernel.org> (raw)
In-Reply-To: <20260803180439.1963864-2-den@valinux.co.jp>
> A PCI function has only a few BARs, but an NTB device may need more
> logical MWs, for example to give queues separate windows. Splitting a
> large or resizable BAR avoids spending one BAR per MW.
>
> BAR subrange mappings for that would consume one inbound mapping region
> per logical MW. Those regions can be scarce on some PCIe controller
> integrations, limiting the number of MWs.
>
> Introduce translation groups whose members use contiguous local
> backing, so one inbound mapping can cover the whole group. Add a group
> query and atomic group set/clear operations. Singleton groups keep using
> the existing per-MW callbacks.
>
> Signed-off-by: Koichiro Den <den@valinux.co.jp>
Sashiko has reviewed this patch and found no issues. It looks great!
--
Sashiko AI review · https://sashiko.dev/#/patchset/20260803180439.1963864-1-den@valinux.co.jp?part=1
next prev parent reply other threads:[~2026-08-03 18:10 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-03 18:04 [PATCH 00/11] PCI/NTB: endpoint: packed vNTB memory windows Koichiro Den
2026-08-03 18:04 ` [PATCH 01/11] NTB: Add atomic MW translation group operations Koichiro Den
2026-08-03 18:10 ` sashiko-bot [this message]
2026-08-03 18:04 ` [PATCH 02/11] NTB: epf: Parse a versioned packed MW layout Koichiro Den
2026-08-03 18:23 ` sashiko-bot
2026-08-03 18:04 ` [PATCH 03/11] PCI: endpoint: pci-epf-vntb: Add packed MW layout handling Koichiro Den
2026-08-03 18:25 ` sashiko-bot
2026-08-03 18:04 ` [PATCH 04/11] PCI: endpoint: pci-epf-vntb: Implement MW group translation callbacks Koichiro Den
2026-08-03 18:25 ` sashiko-bot
2026-08-03 18:04 ` [PATCH 05/11] PCI: endpoint: pci-epf-vntb: Allocate packed outbound MW space Koichiro Den
2026-08-03 18:32 ` sashiko-bot
2026-08-03 18:04 ` [PATCH 06/11] PCI: endpoint: pci-epf-vntb: Add outbound MW group commands Koichiro Den
2026-08-03 18:28 ` sashiko-bot
2026-08-03 18:04 ` [PATCH 07/11] NTB: epf: Implement MW group translation callbacks Koichiro Den
2026-08-03 18:29 ` sashiko-bot
2026-08-03 18:04 ` [PATCH 08/11] NTB: perf: Reject grouped memory windows Koichiro Den
2026-08-03 18:25 ` sashiko-bot
2026-08-03 18:04 ` [PATCH 09/11] NTB/msi: Require a singleton memory window Koichiro Den
2026-08-03 18:23 ` sashiko-bot
2026-08-03 18:04 ` [PATCH 10/11] NTB: ntb_transport: Use atomic MW translation groups Koichiro Den
2026-08-03 18:40 ` sashiko-bot
2026-08-03 18:04 ` [PATCH 11/11] PCI: endpoint: pci-epf-vntb: Expose packed MWs through configfs Koichiro Den
2026-08-03 18:40 ` sashiko-bot
2026-08-03 23:00 ` [PATCH 00/11] PCI/NTB: endpoint: packed vNTB memory windows Randy Dunlap
2026-08-04 0:55 ` Koichiro Den
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