diff options
| author | Zeng Chi <zengchi@kylinos.cn> | 2026-09-21 18:24:42 +0800 |
|---|---|---|
| committer | Sean Christopherson <seanjc@google.com> | 2026-09-22 08:36:16 -0700 |
| commit | 119e9db233ad0f4cbd4cfb9f9385a7bca378b37d (patch) | |
| tree | 660d50d4139cb750fbde1ae3432452c20726c99d /drivers/dma/dw/Kconfig | |
| download | linux-stable-119e9db233ad0f4cbd4cfb9f9385a7bca378b37d.tar.gz linux-stable-119e9db233ad0f4cbd4cfb9f9385a7bca378b37d.zip | |
KVM: Don't pre-reserve xarray entries when storing empty/NULL attributesgrafted
Skip the xarray reservation loop when clearing all memory attributes, as
storing NULL only erases the entry and never needs to allocate, so no
reservation (and no cleanup of a failed one) is required in that case.
Suggested-by: Sean Christopherson <seanjc@google.com>
Cc: David Ballesteros <davimaba.v@proton.me>
Signed-off-by: Zeng Chi <zengchi@kylinos.cn>
Link: https://patch.msgid.link/20260921102442.1232375-1-zeng_chi911@163.com
[sean: split to separate patch]
Signed-off-by: Sean Christopherson <seanjc@google.com>
Diffstat (limited to 'drivers/dma/dw/Kconfig')
| -rw-r--r-- | drivers/dma/dw/Kconfig | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/drivers/dma/dw/Kconfig b/drivers/dma/dw/Kconfig new file mode 100644 index 000000000..a9828ddd6 --- /dev/null +++ b/drivers/dma/dw/Kconfig @@ -0,0 +1,36 @@ +# SPDX-License-Identifier: GPL-2.0 + +# +# DMA engine configuration for dw +# + +config DW_DMAC_CORE + tristate + select DMA_ENGINE + +config DW_DMAC + tristate "Synopsys DesignWare AHB DMA platform driver" + depends on HAS_IOMEM + select DW_DMAC_CORE + help + Support the Synopsys DesignWare AHB DMA controller. This + can be integrated in chips such as the Intel Cherrytrail. + +config RZN1_DMAMUX + tristate "Renesas RZ/N1 DMAMUX driver" + depends on DW_DMAC + depends on ARCH_RZN1 || COMPILE_TEST + help + Support the Renesas RZ/N1 DMAMUX which is located in front of + the Synopsys DesignWare AHB DMA controller located on Renesas + SoCs. + +config DW_DMAC_PCI + tristate "Synopsys DesignWare AHB DMA PCI driver" + depends on PCI + depends on HAS_IOMEM + select DW_DMAC_CORE + help + Support the Synopsys DesignWare AHB DMA controller on the + platforms that enumerate it as a PCI device. For example, + Intel Medfield has integrated this GPDMA controller. |