Displaying 4 results from an estimated 4 matches for "dakinevich".
2017 Mar 17
1
[PATCH] tty: hvc: don't allocate a buffer for console print on stack
On Fri, Feb 17, 2017 at 11:42:45PM +0300, Jan Dakinevich wrote:
> The buffer is used by virtio console driver as DMA buffer. Since v4.9
> (if VMAP_STACK is enabled) we shouldn't use the stack for DMA.
You shouldn't use 'static' data either, that's not always guaranteed to
be DMA-able, right?
>
> Signed-off-by: Jan Dakin...
2017 Mar 17
1
[PATCH] tty: hvc: don't allocate a buffer for console print on stack
On Fri, Feb 17, 2017 at 11:42:45PM +0300, Jan Dakinevich wrote:
> The buffer is used by virtio console driver as DMA buffer. Since v4.9
> (if VMAP_STACK is enabled) we shouldn't use the stack for DMA.
You shouldn't use 'static' data either, that's not always guaranteed to
be DMA-able, right?
>
> Signed-off-by: Jan Dakin...
2017 Feb 01
3
[PATCH] virtio-console: avoid DMA from stack
From: Omar Sandoval <osandov at fb.com>
put_chars() stuffs the buffer it gets into an sg, but that buffer may be
on the stack. This breaks with CONFIG_VMAP_STACK=y (for me, it
manifested as printks getting turned into NUL bytes).
Signed-off-by: Omar Sandoval <osandov at fb.com>
---
Patch based on v4.10-rc6.
drivers/char/virtio_console.c | 12 ++++++++++--
1 file changed, 10
2017 Feb 01
3
[PATCH] virtio-console: avoid DMA from stack
From: Omar Sandoval <osandov at fb.com>
put_chars() stuffs the buffer it gets into an sg, but that buffer may be
on the stack. This breaks with CONFIG_VMAP_STACK=y (for me, it
manifested as printks getting turned into NUL bytes).
Signed-off-by: Omar Sandoval <osandov at fb.com>
---
Patch based on v4.10-rc6.
drivers/char/virtio_console.c | 12 ++++++++++--
1 file changed, 10