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  1. 27 7月, 2010 13 次提交
  3. 26 7月, 2010 16 次提交
  5. 25 7月, 2010 2 次提交
  7. 24 7月, 2010 3 次提交
  9. 23 7月, 2010 6 次提交
    • S
      nconfig: Fix segfault when help contains special characters · 58f915a3
      由 Stephen Boyd 提交于 
      nconfig segfaults when help text contains the character '%'. For a quick
example, navigate to the kernel compression options and get the help for
bzip2. Doing so triggers a call to mvwprintw() with a string containing
'%' and no extra arguments to fill in the specifier's value. Fix this
case by printing the literal string retrieved from the kconfig.

 #0  0x00002b52b6b11d83 in vfprintf () from /lib/libc.so.6
 #1  0x00002b52b6bad010 in __vsnprintf_chk () from /lib/libc.so.6
 #2  0x00002b52b623991b in _nc_printf_string () from
 /lib/libncursesw.so.5
 #3  0x00002b52b6234cff in vwprintw () from /lib/libncursesw.so.5
 #4  0x00002b52b6234db9 in mvwprintw () from /lib/libncursesw.so.5
 #5  0x00000000004151d8 in fill_window (win=0x21b64c0,
     text=0x21b62b0 "CONFIG_KERNEL_BZIP2:\n\nIts compression ratio and
     speed is intermediate.\nDecompression speed is slowest among the
     three.  The kernel\nsize is about 10% smaller with bzip2, in
     comparison to gzip.\nBzip2 us"...)
     at scripts/kconfig/nconf.gui.c:229
 #6  0x0000000000416335 in show_scroll_win (main_window=0x21a5630,
         title=0x157fa30 "Bzip2",
 	    text=0x21b62b0 "CONFIG_KERNEL_BZIP2:\n\nIts compression
 	    ratio and speed is intermediate.\nDecompression speed is
 	    slowest among the three.  The kernel\nsize is about 10%
 	    smaller with bzip2, in comparison to gzip.\nBzip2 us"...)
     at scripts/kconfig/nconf.gui.c:535
 #7  0x00000000004055b2 in show_help (menu=0x157f9d0)
         at scripts/kconfig/nconf.c:1257
 #8  0x0000000000405897 in conf_choice (menu=0x157f130)
 	    at scripts/kconfig/nconf.c:1321
 #9  0x0000000000405326 in conf (menu=0x157d130) at
 	    scripts/kconfig/nconf.c:1208
 #10 0x00000000004052e8 in conf (menu=0xb434a0) at
 	    scripts/kconfig/nconf.c:1203
 #11 0x0000000000406092 in main (ac=2, av=0x7fff96a93c38)

Cc: Michal Marek <mmarek@suse.cz>
Cc: Nir Tzachar <nir.tzachar@gmail.com>
Signed-off-by: NStephen Boyd <bebarino@gmail.com>
Signed-off-by: NMichal Marek <mmarek@suse.cz>
      58f915a3
    • A
      KVM: Use kmalloc() instead of vmalloc() for KVM_[GS]ET_MSR · 7a73c028
      由 Avi Kivity 提交于 
      We don't need more than a page, and vmalloc() is slower (much
slower recently due to a regression).
Signed-off-by: NAvi Kivity <avi@redhat.com>
      7a73c028
    • X
      KVM: MMU: fix conflict access permissions in direct sp · 6aa0b9de
      由 Xiao Guangrong 提交于 
      In no-direct mapping, we mark sp is 'direct' when we mapping the
guest's larger page, but its access is encoded form upper page-struct
entire not include the last mapping, it will cause access conflict.

For example, have this mapping:
        [W]
      / PDE1 -> |---|
  P[W]          |   | LPA
      \ PDE2 -> |---|
        [R]

P have two children, PDE1 and PDE2, both PDE1 and PDE2 mapping the
same lage page(LPA). The P's access is WR, PDE1's access is WR,
PDE2's access is RO(just consider read-write permissions here)

When guest access PDE1, we will create a direct sp for LPA, the sp's
access is from P, is W, then we will mark the ptes is W in this sp.

Then, guest access PDE2, we will find LPA's shadow page, is the same as
PDE's, and mark the ptes is RO.

So, if guest access PDE1, the incorrect #PF is occured.

Fixed by encode the last mapping access into direct shadow page
Signed-off-by: NXiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: NAvi Kivity <avi@redhat.com>
      6aa0b9de
    • B
      Merge commit 'kumar/merge' into merge · 7ffb65f8
      由 Benjamin Herrenschmidt 提交于
      7ffb65f8
    • S
      vmlinux.lds: fix .data..init_task output section (fix popwerpc boot) · da5e37ef
      由 Sam Ravnborg 提交于 
      The .data..init_task output section was missing
a load offset causing a popwerpc target to fail to boot.

Sean MacLennan tracked it down to the definition of
INIT_TASK_DATA_SECTION().

There are only two users of INIT_TASK_DATA_SECTION()
in the kernel today: cris and popwerpc.
cris do not support relocatable kernels and is thus not
impacted by this change.

Fix INIT_TASK_DATA_SECTION() to specify load offset like
all other output sections.
Reported-by: NSean MacLennan <smaclennan@pikatech.com>
Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
      da5e37ef
    • B
      powerpc: Fix erroneous lmb->memblock conversions · 3fdfd990
      由 Benjamin Herrenschmidt 提交于 
      Oooops... we missed these. We incorrectly converted strings
used when parsing the device-tree on pseries, thus breaking
access to drconf memory and hotplug memory.

While at it, also revert some variable names that represent
something the FW calls "lmb" and thus don't need to be converted
to "memblock".
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
---
      3fdfd990