Re: Framebuffer mmap on PowerPC

Hi Am 31.08.23 um 19:38 schrieb Christophe Leroy: Le 31/08/2023 à 16:41, Thomas Zimmermann a écrit : Hi, there's a per-architecture function called fb_pgprotect() that sets VMA's vm_page_prot for mmaped framebuffers. Most architectures use a simple implementation based on pgprot_writecomine(

Framebuffer mmap on PowerPC

Hi, there's a per-architecture function called fb_pgprotect() that sets VMA's vm_page_prot for mmaped framebuffers. Most architectures use a simple implementation based on pgprot_writecomine() [1] or pgprot_noncached(). [2] On PPC this function uses phys_mem_access_prot() and therefore requi

Re: Framebuffer mmap on PowerPC

On Thu, Aug 31, 2023, at 10:41, Thomas Zimmermann wrote: > Hi, > > there's a per-architecture function called fb_pgprotect() that sets > VMA's vm_page_prot for mmaped framebuffers. Most architectures use a > simple implementation based on pgprot_writecomine() [1] or > pgprot_noncached(). [2] > >

Re: Framebuffer mmap on PowerPC

Le 31/08/2023 à 19:38, Christophe Leroy a écrit : > > > Le 31/08/2023 à 16:41, Thomas Zimmermann a écrit : >> Hi, >> >> there's a per-architecture function called fb_pgprotect() that sets >> VMA's vm_page_prot for mmaped framebuffers. Most architectures use a >> simple implementation based on

Re: Framebuffer mmap on PowerPC

Le 31/08/2023 à 16:41, Thomas Zimmermann a écrit : > Hi, > > there's a per-architecture function called fb_pgprotect() that sets > VMA's vm_page_prot for mmaped framebuffers. Most architectures use a > simple implementation based on pgprot_writecomine() [1] or > pgprot_noncached(). [2] > > O