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linux-next/drivers/char/agp
Jan Beulich da503fa60b agp: two-stage page destruction issue
besides it apparently being useful only in 2.6.24 (the changes in 2.6.25
really mean that it could be converted back to a single-stage mechanism),
I'm seeing an issue in Xen Dom0 kernels, which is caused by the calling
of gart_to_virt() in the second stage invocations of the destroy function.
I think that besides this being a real issue with Xen (where
unmap_page_from_agp() is not just a page table attribute change), this
also is invalid from a theoretical perspective: One should not assume that
gart_to_virt() is still valid after unmapping a page. So minimally (keeping
the 2-stage mechanism) a patch like the one below would be needed.

Jan

Signed-off-by: Dave Airlie <airlied@redhat.com>
2008-06-19 09:56:16 +10:00
..
agp.h drivers/char: replace remaining __FUNCTION__ occurrences 2008-04-30 08:29:54 -07:00
ali-agp.c x86: cpa: move flush to cpa 2008-01-30 13:34:07 +01:00
alpha-agp.c agp: alpha nopage 2008-02-05 09:44:22 -08:00
amd64-agp.c x86 gart: rename CONFIG_IOMMU to CONFIG_GART_IOMMU 2007-10-30 00:22:22 +01:00
amd-k7-agp.c agp: fix shadowed variable warning in amd-k7-agp.c 2008-04-26 18:38:04 +10:00
ati-agp.c agp: add support for Radeon Mobility 9000 chipset 2008-06-12 18:05:39 -07:00
backend.c agp: two-stage page destruction issue 2008-06-19 09:56:16 +10:00
compat_ioctl.c agp: add chipset flushing support to AGP interface 2008-02-05 14:33:32 +10:00
compat_ioctl.h agp: add chipset flushing support to AGP interface 2008-02-05 14:33:32 +10:00
efficeon-agp.c x86: Create clflush() inline, remove hardcoded wbinvd 2007-10-17 20:16:12 +02:00
frontend.c agp: convert drivers/char/agp/frontend.c to use unlocked_ioctl 2008-04-26 18:43:20 +10:00
generic.c agp: two-stage page destruction issue 2008-06-19 09:56:16 +10:00
hp-agp.c convert ill defined log2() to ilog2() 2007-10-17 08:42:48 -07:00
i460-agp.c x86: cpa: move flush to cpa 2008-01-30 13:34:07 +01:00
intel-agp.c agp: two-stage page destruction issue 2008-06-19 09:56:16 +10:00
isoch.c [AGPGART] Lots of CodingStyle/whitespace cleanups. 2006-02-28 00:54:25 -05:00
Kconfig x86 gart: rename CONFIG_IOMMU to CONFIG_GART_IOMMU 2007-10-30 00:22:22 +01:00
Makefile [AGPGART] Fix modular agpgart ia64 allmodconfig 2007-02-20 14:18:01 -05:00
nvidia-agp.c agp: balance ioremap checks 2007-08-25 18:14:00 +10:00
parisc-agp.c convert ill defined log2() to ilog2() 2007-10-17 08:42:48 -07:00
sgi-agp.c agp: don't lock pages 2007-07-27 10:46:26 +10:00
sis-agp.c agp: add support for 662/671 to agp driver 2008-02-20 10:18:46 +10:00
sworks-agp.c agp: fix missing casts that produced a warning. 2008-02-20 10:37:08 +10:00
uninorth-agp.c [POWERPC] Rename get_property to of_get_property: drivers 2007-05-02 20:04:32 +10:00
via-agp.c agp/via: fixup pci ids 2008-06-19 09:52:26 +10:00