Hi Thomas,
Am 17.04.23 um 16:12 schrieb Arnd Bergmann:>> On Mon, Apr 17, 2023, at 14:56,
Thomas Zimmermann wrote:
Various architectures provide with helpers for fbdev
framebuffer devices. Share the contained code where possible. There
is already , which implements generic (as in
'empty') func
On Mon, 27 Mar 2023 05:13:05 PDT (-0700), a...@kernel.org wrote:
From: Arnd Bergmann
For a DMA_BIDIRECTIONAL transfer, the caches have to be cleaned
first to let the device see data written by the CPU, and invalidated
after the transfer to let the CPU see data written by the device.
riscv also
On Mon, 27 Mar 2023 05:13:04 PDT (-0700), a...@kernel.org wrote:
From: Arnd Bergmann
No other architecture intentionally writes back dirty cache lines into
a buffer that a device has just finished writing into. If the cache is
clean, this has no effect at all, but if a cacheline in the buffer h
