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  1. 29 3月, 2009 1 次提交
  3. 26 3月, 2009 2 次提交
    • R
      Revert "x86: don't compile vsmp_64 for 32bit" · 70511134
      由 Ravikiran G Thirumalai 提交于 
      Partial revert of commit 129d8bc8
titled 'x86: don't compile vsmp_64 for 32bit'

Commit reverted to compile vsmp_64.c if CONFIG_X86_64 is defined,
since is_vsmp_box() needs to indicate that TSCs are not synchronized, and
hence, not a valid time source, even when CONFIG_X86_VSMP is not defined.
Signed-off-by: NRavikiran Thirumalai <kiran@scalex86.org>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: shai@scalex86.org
LKML-Reference: <20090324061429.GH7278@localdomain>
Signed-off-by: NIngo Molnar <mingo@elte.hu>
      70511134
    • R
      x86: Correct behaviour of irq affinity · e06b1b56
      由 Rusty Russell 提交于 
      Impact: get correct smp_affinity as user requested

The effect of setting desc->affinity (ie. from userspace via sysfs) has
varied over time.  In 2.6.27, the 32-bit code anded the value with
cpu_online_map, and both 32 and 64-bit did that anding whenever a cpu
was unplugged.

2.6.29 consolidated this into one routine (and fixed hotplug) but
introduced another variation: anding the affinity with cfg->domain.

We should just set it to what the user said - if possible.

(cpu_mask_to_apicid_and already takes cpu_online_mask into account)
Signed-off-by: NYinghai Lu <yinghai@kernel.org>
Acked-by: N"Eric W. Biederman" <ebiederm@xmission.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
LKML-Reference: <49C94DDF.2010703@kernel.org>
Signed-off-by: NIngo Molnar <mingo@elte.hu>
      e06b1b56
  5. 25 3月, 2009 3 次提交
    • W
      x86: early_ioremap_init(), use __fix_to_virt(), because we are sure it's safe · 9f4f25c8
      由 Wang Chen 提交于 
      Tetsuo Handa reported this link bug:

 |  arch/x86/mm/built-in.o(.init.text+0x1831): In function `early_ioremap_init':
 |  : undefined reference to `__this_fixmap_does_not_exist'
 |  make: *** [.tmp_vmlinux1] Error 1

Commit:8827247f used a variable (which
would be optimized to constant) as fix_to_virt()'s parameter.
It's depended on gcc's optimization and fails on old gcc. (Tetsuo used gcc 3.3)

We can use __fix_to_vir() instead, because we know it's safe and
don't need link time error reporting.
Reported-by: NTetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
Signed-off-by: NWang Chen <wangchen@cn.fujitsu.com>
Cc: sfr@canb.auug.org.au
LKML-Reference: <49C9FFEA.7060908@cn.fujitsu.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>
      9f4f25c8
    • Y
      x86: use default_cpu_mask_to_apicid for 64bit · f56e5034
      由 Yinghai Lu 提交于 
      Impact: cleanup

Use online_mask directly on 64bit too.
Signed-off-by: NYinghai Lu <yinghai@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
LKML-Reference: <49C94DAE.9070300@kernel.org>
Signed-off-by: NIngo Molnar <mingo@elte.hu>
      f56e5034
    • Y
      x86: fix set_extra_move_desc calling · fa74c907
      由 Yinghai Lu 提交于 
      Impact: fix bug with irq-descriptor moving when logical flat

Rusty observed:

> The effect of setting desc->affinity (ie. from userspace via sysfs) has varied
> over time.  In 2.6.27, the 32-bit code anded the value with cpu_online_map,
> and both 32 and 64-bit did that anding whenever a cpu was unplugged.
>
> 2.6.29 consolidated this into one routine (and fixed hotplug) but introduced
> another variation: anding the affinity with cfg->domain.  Is this right, or
> should we just set it to what the user said?  Or as now, indicate that we're
> restricting it.

Eric pointed out that desc->affinity should be what the user requested,
if it is at all possible to honor the user space request.

This bug got introduced by commit 22f65d31 "x86: Update io_apic.c to use
new cpumask API".

Fix it by moving the masking to before the descriptor moving ...
Reported-by: NRusty Russell <rusty@rustcorp.com.au>
Reported-by: NEric W. Biederman <ebiederm@xmission.com>
LKML-Reference: <49C94134.4000408@kernel.org>
Signed-off-by: NIngo Molnar <mingo@elte.hu>
      fa74c907
  7. 24 3月, 2009 10 次提交
  9. 23 3月, 2009 17 次提交
  11. 22 3月, 2009 4 次提交
  13. 21 3月, 2009 3 次提交