From: Takashi Iwai <tiwai@suse.de>
To: alsa-devel@alsa-project.org
Cc: "Marek Marczykowski-Górecki" <marmarek@invisiblethingslab.com>
Subject: [PATCH 0/2] ALSA: memalloc: Fix for Xen PV and non-IOMMU systems
Date: Tue, 24 Jan 2023 10:27:42 +0100 [thread overview]
Message-ID: <20230124092744.27370-1-tiwai@suse.de> (raw)
Hi,
this is a patch series to address the recent regression on Xen PV (and
possibly non-IOMMU) systems about the SG-buffer memory allocation.
We switched to use dma_alloc_noncontiguous() as hoped it handling
everything right, but it turned out that this doesn't work always.
So this is one step back, use the explicit SG-buffer with
dma_alloc_coherent() calls, but in a bit more optimized ways, and also
applying only for those systems.
Takashi
===
Takashi Iwai (2):
ALSA: memalloc: Explicit SG-allocations for Xen PV and non-IOMMU
systems
ALSA: memalloc: Use coherent DMA allocation for fallback again
sound/core/memalloc.c | 68 +++++++++++++++++++++++++++++++++----------
1 file changed, 53 insertions(+), 15 deletions(-)
--
2.35.3
next reply other threads:[~2023-01-24 9:28 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-24 9:27 Takashi Iwai [this message]
2023-01-24 9:27 ` [PATCH 1/2] ALSA: memalloc: Explicit SG-allocations for Xen PV and non-IOMMU systems Takashi Iwai
2023-01-24 9:27 ` [PATCH 2/2] ALSA: memalloc: Use coherent DMA allocation for fallback again Takashi Iwai
2023-01-25 15:29 ` [PATCH 0/2] ALSA: memalloc: Fix for Xen PV and non-IOMMU systems Takashi Iwai
2023-01-25 15:33 ` Marek Marczykowski-Górecki
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