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author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2009-02-08 17:27:21 +0300 |
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committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2009-02-10 06:39:08 +0300 |
commit | 5b11abfdb572bf9284e596dd198ac2aaf95b6616 (patch) | |
tree | 1d7852201544d29c6757cd27f131bb31d29d74ed /arch/powerpc/include/asm/elf.h | |
parent | d87bf76679bd37593ae4a3133f5da9395a4963ac (diff) | |
download | linux-5b11abfdb572bf9284e596dd198ac2aaf95b6616.tar.xz |
powerpc/pci: mmap anonymous memory when legacy_mem doesn't exist
The new legacy_mem file in sysfs is causing problems with X on machines
that don't support legacy memory access. The way I initially implemented
it, we would fail with -ENXIO when trying to mmap it, thus exposing to
X that we do support the API but there is no legacy memory.
Unfortunately, X poor error handling is causing it to fail to start when
it gets this error.
This implements a workaround hack that instead maps anonymous memory
instead (using shmem if VM_SHARED is set, just like /dev/zero does).
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/include/asm/elf.h')
0 files changed, 0 insertions, 0 deletions