Re: [PATCH] fbdev: fix incorrect address computation in deferred IO

On Tue, Apr 23, 2024 at 01:27:09PM +0200, Thomas Zimmermann wrote: > Am 23.04.24 um 11:55 schrieb Nam Cao: ... > > > The page-fault handler at [1] use vm_fault.pgoff to retrieve the page > > > structure. Can we do the same here and avoid that computation? > > Yes, thanks for the suggestion. > > >

Re: [PATCH] fbdev: fix incorrect address computation in deferred IO

Hi Am 23.04.24 um 11:55 schrieb Nam Cao: [...] Fix this by taking the mapping offset into account. Reported-and-tested-by: Harshit Mogalapalli Closes: https://lore.kernel.org/linux-fbdev/271372d6-e665-4e7f-b088-dee5f4ab3...@oracle.com Fixes: 56c134f7f1b5 ("fbdev: Track deferred-I/O pages in

Re: [PATCH] fbdev: fix incorrect address computation in deferred IO

On Tue, Apr 23, 2024 at 10:37:41AM +0200, Thomas Zimmermann wrote: > Hi, > > thanks for following through with the bug and sending the patch > > Am 19.04.24 um 21:00 schrieb Nam Cao: > > With deferred IO enabled, a page fault happens when data is written to the > > framebuffer device. Then

Re: [PATCH] fbdev: fix incorrect address computation in deferred IO

Hi, thanks for following through with the bug and sending the patch Am 19.04.24 um 21:00 schrieb Nam Cao: With deferred IO enabled, a page fault happens when data is written to the framebuffer device. Then driver determines which page is being updated by calculating the offset of the written