linux-toradex.git/arch/um/include/asm, branch v3.2.32 Linux kernel for Apalis and Colibri modules um: Fix __swp_type() 2012-05-30T23:43:47+00:00 Richard Weinberger richard@nod.at 2012-04-14T15:46:01+00:00 ff741084d380bd234a4d0ffba0c19e8047a14658 commit 2b76ebaa728f8a3967c52aa189261c72fe56a6f1 upstream. The current __swp_type() function uses a too small bitshift. Using more than one swap files causes bad pages because the type bits clash with other page flags. Analyzed-by: Hugh Dickins <hughd@google.com> Signed-off-by: Richard Weinberger <richard@nod.at> Signed-off-by: Ben Hutchings <ben@decadent.org.uk> 
commit 2b76ebaa728f8a3967c52aa189261c72fe56a6f1 upstream.

The current __swp_type() function uses a too small bitshift.
Using more than one swap files causes bad pages because
the type bits clash with other page flags.

Analyzed-by: Hugh Dickins <hughd@google.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
um: Implement a custom pte_same() function 2012-05-30T23:43:46+00:00 Richard Weinberger richard@nod.at 2012-04-14T15:29:30+00:00 e22b65022898e212f80ca989e613179e318b8a79 commit f15b9000eb1d09bbaa4b0a6b2089d7e1f64e84b3 upstream. UML uses the _PAGE_NEWPAGE flag to mark pages which are not jet installed on the host side using mmap(). pte_same() has to ignore this flag, otherwise unuse_pte_range() is unable to unuse the page because two identical page tables entries with different _PAGE_NEWPAGE flags would not match and swapoff() would never return. Analyzed-by: Hugh Dickins <hughd@google.com> Signed-off-by: Richard Weinberger <richard@nod.at> Signed-off-by: Ben Hutchings <ben@decadent.org.uk> 
commit f15b9000eb1d09bbaa4b0a6b2089d7e1f64e84b3 upstream.

UML uses the _PAGE_NEWPAGE flag to mark pages which are not jet
installed on the host side using mmap().
pte_same() has to ignore this flag, otherwise unuse_pte_range()
is unable to unuse the page because two identical
page tables entries with different _PAGE_NEWPAGE flags would not
match and swapoff() would never return.

Analyzed-by: Hugh Dickins <hughd@google.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
um: kill system-um.h 2011-11-02T13:15:34+00:00 Al Viro viro@ftp.linux.org.uk 2011-08-18T19:14:00+00:00 a34978cbd977ab62c744f63daacd9dc1474482be most of it belonged in irqflags.h, actually Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at> 
most of it belonged in irqflags.h, actually

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Richard Weinberger <richard@nod.at>
um: generic ftrace.h will do... 2011-11-02T13:15:34+00:00 Al Viro viro@ftp.linux.org.uk 2011-08-18T19:13:50+00:00 b8c655d727ebfe78769b62a0349227d5a656e967 Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at> 
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Richard Weinberger <richard@nod.at>
um: segment.h is x86-only and needed only there 2011-11-02T13:15:33+00:00 Al Viro viro@ftp.linux.org.uk 2011-08-18T19:13:40+00:00 46ecca8ae1540abe73000d0fb4878de6956a208f Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at> 
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Richard Weinberger <richard@nod.at>
um: asm/pda.h is not needed anymore 2011-11-02T13:15:32+00:00 Al Viro viro@ftp.linux.org.uk 2011-08-18T19:13:30+00:00 c2ad3ad009cbef8eb2f550809d2c2c3ed8e04a8d Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at> 
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Richard Weinberger <richard@nod.at>
um: hw_irq.h can go generic as well 2011-11-02T13:15:31+00:00 Al Viro viro@ftp.linux.org.uk 2011-08-18T19:13:20+00:00 8e66cda4af84321b308825f1c70aff6bffa30b35 Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at> 
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Richard Weinberger <richard@nod.at>
um: switch to generic-y 2011-11-02T13:15:30+00:00 Al Viro viro@ftp.linux.org.uk 2011-08-18T19:13:10+00:00 f5e900770f387d7a4c633b7cef105039f32a85c1 kill wrapper headers Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at> 
kill wrapper headers

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Richard Weinberger <richard@nod.at>
um: page_offset.h is never used 2011-11-02T13:15:25+00:00 Al Viro viro@ftp.linux.org.uk 2011-08-18T19:11:39+00:00 c32324e31270514638d6d2df38436590862e0d8f ... and neither is the only define in it Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at> 
... and neither is the only define in it

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Richard Weinberger <richard@nod.at>
um: irq_vectors.h just shadows x86 one 2011-11-02T13:15:24+00:00 Al Viro viro@ftp.linux.org.uk 2011-08-18T19:11:29+00:00 3fb77d7256f442e8e15d51f111bb6cf096d4a9f8 Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at> 
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Richard Weinberger <richard@nod.at>