diff options
| author | David Miller <davem@davemloft.net> | 2006-06-02 18:30:58 -0700 |
|---|---|---|
| committer | Chris Wright <chrisw@sous-sol.org> | 2006-06-22 12:16:11 -0700 |
| commit | 76fc2aafe67361e69c980408fc66ac4f051b17da (patch) | |
| tree | 80f97e07859877b65faf0117054582b3afd66c10 /arch/sparc64/kernel/sparc64_ksyms.c | |
| parent | 0d9a5318df1248e63a7a528b7a8a8f23b52ac1a4 (diff) | |
[PATCH] SPARC64: Fix D-cache corruption in mremap
If we move a mapping from one virtual address to another,
and this changes the virtual color of the mapping to those
pages, we can see corrupt data due to D-cache aliasing.
Check for and deal with this by overriding the move_pte()
macro. Set things up so that other platforms can cleanly
override the move_pte() macro too.
This long standing bug corrupts user memory, and in particular
has been notorious for corrupting Debian package database
files on sparc64 boxes.
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'arch/sparc64/kernel/sparc64_ksyms.c')
0 files changed, 0 insertions, 0 deletions