RE: fbdev deferred I/O broken in some scenarios

From: Helge Deller Sent: Tuesday, March 18, 2025 1:16 AM > Hi Michael, > > On 3/18/25 03:05, Michael Kelley wrote: > > I've been trying to get mmap() working with the hyperv_fb.c fbdev driver, > > which > > is for Linux guests running on Microsoft's Hyper-V hypervisor. The > > hyperv_fb driver

Re: fbdev deferred I/O broken in some scenarios

Hi Am 18.03.25 um 03:05 schrieb Michael Kelley: I've been trying to get mmap() working with the hyperv_fb.c fbdev driver, which is for Linux guests running on Microsoft's Hyper-V hypervisor. The hyperv_fb driver uses fbdev deferred I/O for performance reasons. But it looks to me like fbdev defe

Re: fbdev deferred I/O broken in some scenarios

Hi Michael, On Thu, 20 Mar 2025 at 21:15, Michael Kelley wrote: > From: Geert Uytterhoeven Sent: Thursday, March 20, > 2025 3:46 AM > > On Wed, 19 Mar 2025 at 21:29, Michael Kelley wrote: > > > From: Helge Deller Sent: Tuesday, March 18, 2025 1:16 AM > > > > On 3/18/25 03:05, Michael Kelley w

RE: fbdev deferred I/O broken in some scenarios

From: Thomas Zimmermann Sent: Tuesday, March 18, 2025 1:26 AM > > Am 18.03.25 um 03:05 schrieb Michael Kelley: > > I've been trying to get mmap() working with the hyperv_fb.c fbdev driver, > > which > > is for Linux guests running on Microsoft's Hyper-V hypervisor. The > > hyperv_fb driver > >

RE: fbdev deferred I/O broken in some scenarios

From: Geert Uytterhoeven Sent: Thursday, March 20, 2025 3:46 AM > > Hi Michael, > > On Wed, 19 Mar 2025 at 21:29, Michael Kelley wrote: > > From: Helge Deller Sent: Tuesday, March 18, 2025 1:16 AM > > > On 3/18/25 03:05, Michael Kelley wrote: > > > > I've been trying to get mmap() working wit

Re: fbdev deferred I/O broken in some scenarios

Hi Michael, On Wed, 19 Mar 2025 at 21:29, Michael Kelley wrote: > From: Helge Deller Sent: Tuesday, March 18, 2025 1:16 AM > > On 3/18/25 03:05, Michael Kelley wrote: > > > I've been trying to get mmap() working with the hyperv_fb.c fbdev driver, > > > which > > > is for Linux guests running on

Re: fbdev deferred I/O broken in some scenarios

Hi Am 19.03.25 um 21:38 schrieb Michael Kelley: From: Thomas Zimmermann Sent: Tuesday, March 18, 2025 1:26 AM Am 18.03.25 um 03:05 schrieb Michael Kelley: I've been trying to get mmap() working with the hyperv_fb.c fbdev driver, which is for Linux guests running on Microsoft's Hyper-V hyperv

Re: fbdev deferred I/O broken in some scenarios

Hi Michael, On 3/18/25 03:05, Michael Kelley wrote: I've been trying to get mmap() working with the hyperv_fb.c fbdev driver, which is for Linux guests running on Microsoft's Hyper-V hypervisor. The hyperv_fb driver uses fbdev deferred I/O for performance reasons. But it looks to me like fbdev