From 119e9db233ad0f4cbd4cfb9f9385a7bca378b37d Mon Sep 17 00:00:00 2001 From: Zeng Chi Date: Mon, 21 Sep 2026 18:24:42 +0800 Subject: KVM: Don't pre-reserve xarray entries when storing empty/NULL attributes 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 Cc: David Ballesteros Signed-off-by: Zeng Chi Link: https://patch.msgid.link/20260921102442.1232375-1-zeng_chi911@163.com [sean: split to separate patch] Signed-off-by: Sean Christopherson --- Documentation/driver-api/dmaengine/index.rst | 48 ++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 Documentation/driver-api/dmaengine/index.rst (limited to 'Documentation/driver-api/dmaengine/index.rst') diff --git a/Documentation/driver-api/dmaengine/index.rst b/Documentation/driver-api/dmaengine/index.rst new file mode 100644 index 000000000..e74677c66 --- /dev/null +++ b/Documentation/driver-api/dmaengine/index.rst @@ -0,0 +1,48 @@ +======================= +DMAEngine documentation +======================= + +DMAEngine documentation provides documents for various aspects of DMAEngine +framework. + +DMAEngine development documentation +----------------------------------- + +This book helps with DMAengine internal APIs and guide for DMAEngine device +driver writers. + +.. toctree:: + :maxdepth: 1 + + provider + +DMAEngine client documentation +------------------------------ + +This book is a guide to device driver writers on how to use the Slave-DMA +API of the DMAEngine. This is applicable only for slave DMA usage only. + +.. toctree:: + :maxdepth: 1 + + client + +DMA Test documentation +---------------------- + +This book introduces how to test DMA drivers using dmatest module. + +.. toctree:: + :maxdepth: 1 + + dmatest + +PXA DMA documentation +---------------------- + +This book adds some notes about PXA DMA + +.. toctree:: + :maxdepth: 1 + + pxa_dma -- cgit v1.3.1