On Thu, 28 Apr 2005 17:21:19 +1000 Benjamin Herrenschmidt <[email protected]> wrote: > I have a real net big performance improvement on X by doing that > trick ... the sysfs mmap API doesn't really provide a mean to do > it explicitely from userland (unlike the ioctl with the old proc api) You can refine your test to "if PCI class is display or VGA" and the prefetchability is set in the BAR, then elide the guard PTE protection bit. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
- Follow-Ups:
- Re: pci-sysfs resource mmap broken (and PATCH)
- From: Benjamin Herrenschmidt <[email protected]>
- Re: pci-sysfs resource mmap broken (and PATCH)
- References:
- Re: pci-sysfs resource mmap broken
- From: Grant Grundler <[email protected]>
- Re: pci-sysfs resource mmap broken
- From: Benjamin Herrenschmidt <[email protected]>
- pci-sysfs resource mmap broken (and PATCH)
- From: Benjamin Herrenschmidt <[email protected]>
- Re: pci-sysfs resource mmap broken (and PATCH)
- From: Grant Grundler <[email protected]>
- Re: pci-sysfs resource mmap broken (and PATCH)
- From: "David S. Miller" <[email protected]>
- Re: pci-sysfs resource mmap broken (and PATCH)
- From: Benjamin Herrenschmidt <[email protected]>
- Re: pci-sysfs resource mmap broken (and PATCH)
- From: "David S. Miller" <[email protected]>
- Re: pci-sysfs resource mmap broken (and PATCH)
- From: Benjamin Herrenschmidt <[email protected]>
- Re: pci-sysfs resource mmap broken
- Prev by Date: Re: [PATCH 6/6]suspend/resume SMP support
- Next by Date: Re: [PATCH] VFS bugfix: two read_inode() calles without clear_inode() call between
- Previous by thread: Re: pci-sysfs resource mmap broken (and PATCH)
- Next by thread: Re: pci-sysfs resource mmap broken (and PATCH)
- Index(es):
 |