From: Takashi Iwai <tiwai@suse•de>
To: Vivian Wang <wangruikang@iscas•ac.cn>
Cc: "Madhavan Srinivasan" <maddy@linux•ibm.com>,
"Michael Ellerman" <mpe@ellerman•id.au>,
"Nicholas Piggin" <npiggin@gmail•com>,
"Christophe Leroy (CS GROUP)" <chleroy@kernel•org>,
"Alex Deucher" <alexander.deucher@amd•com>,
"Christian König" <christian.koenig@amd•com>,
"David Airlie" <airlied@gmail•com>,
"Simona Vetter" <simona@ffwll•ch>,
"Creeley, Brett" <bcreeley@amd•com>,
"Andrew Lunn" <andrew+netdev@lunn•ch>,
"David S. Miller" <davem@davemloft•net>,
"Eric Dumazet" <edumazet@google•com>,
"Jakub Kicinski" <kuba@kernel•org>,
"Paolo Abeni" <pabeni@redhat•com>,
"Bjorn Helgaas" <bhelgaas@google•com>,
"Jaroslav Kysela" <perex@perex•cz>,
"Takashi Iwai" <tiwai@suse•com>, "Han Gao" <gaohan@iscas•ac.cn>,
linuxppc-dev@lists•ozlabs.org, linux-kernel@vger•kernel.org,
amd-gfx@lists•freedesktop.org, dri-devel@lists•freedesktop.org,
netdev@vger•kernel.org, linux-pci@vger•kernel.org,
linux-sound@vger•kernel.org, linux-riscv@lists•infradead.org,
sophgo@lists•linux.dev
Subject: Re: [PATCH v2 4/4] ALSA: hda/intel: Raise msi_addr_mask to dma_bits
Date: Wed, 21 Jan 2026 09:15:09 +0100 [thread overview]
Message-ID: <878qdrs7oy.wl-tiwai@suse.de> (raw)
In-Reply-To: <20260121-pci-msi-addr-mask-v2-4-f42593168989@iscas.ac.cn>
On Wed, 21 Jan 2026 04:49:40 +0100,
Vivian Wang wrote:
>
> The code was originally written using no_64bit_msi, which restricts the
> device to 32-bit MSI addresses.
>
> Since msi_addr_mask is introduced, use DMA_BIT_MASK(dma_bits) instead of
> DMA_BIT_MASK(32) here for msi_addr_mask, describing the restriction more
> precisely and allowing these devices to work on platforms with MSI
> doorbell address above 32-bit space, as long as it is within the
> hardware's addressable space.
>
> Signed-off-by: Vivian Wang <wangruikang@iscas•ac.cn>
>
> ---
> v2: No changes
>
> hda/intel maintainers: I don't know if this is the correct restriction.
> Please help with checking. Thanks.
The quirk is used only for AMD graphics chips, so this should
(hopefully) work.
Acked-by: Takashi Iwai <tiwai@suse•de>
thanks,
Takashi
prev parent reply other threads:[~2026-01-21 8:15 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-21 3:49 [PATCH v2 0/4] PCI/MSI: Generalize no_64bit_msi into msi_addr_mask Vivian Wang
2026-01-21 3:49 ` [PATCH v2 1/4] PCI/MSI: Conservatively generalize " Vivian Wang
2026-01-21 8:21 ` Takashi Iwai
2026-01-21 23:40 ` Bjorn Helgaas
2026-01-21 3:49 ` [PATCH v2 2/4] PCI/MSI: Check msi_addr_mask in msi_verify_entries() Vivian Wang
2026-01-21 23:38 ` Bjorn Helgaas
2026-01-22 10:22 ` Vivian Wang
2026-01-21 3:49 ` [PATCH v2 3/4] drm/radeon: Raise msi_addr_mask to dma_bits Vivian Wang
2026-01-21 3:49 ` [PATCH v2 4/4] ALSA: hda/intel: " Vivian Wang
2026-01-21 8:15 ` Takashi Iwai [this message]
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