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  1. 24 Jan, 2009 1 commit
    • Hiroshi Shimamoto's avatar
      x86: uaccess: introduce try and catch framework · fe40c0af
      Hiroshi Shimamoto authored 
      Impact: introduce new uaccess exception handling framework

Introduce {get|put}_user_try and {get|put}_user_catch as new uaccess exception
handling framework.
{get|put}_user_try begins exception block and {get|put}_user_catch(err) ends
the block and gets err if an exception occured in {get|put}_user_ex() in the
block. The exception is stored thread_info->uaccess_err.

The example usage of this framework is below;
int func()
{
	int err = 0;

	get_user_try {
		get_user_ex(...);
		get_user_ex(...);
		:
	} get_user_catch(err);

	return err;
}

Note: get_user_ex() is not clear the value when an exception occurs, it's
different from the behavior of __get_user(), but I think it doesn't matter.
Signed-off-by: default avatarHiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Signed-off-by: default avatarH. Peter Anvin <hpa@linux.intel.com>
      fe40c0af
  3. 21 Jan, 2009 2 commits
  5. 20 Jan, 2009 1 commit
    • Jiri Kosina's avatar
      x86: remove byte locks · afb33f8c
      Jiri Kosina authored 
      Impact: cleanup

Remove byte locks implementation, which was introduced by Jeremy in
8efcbab6 ("paravirt: introduce a "lock-byte" spinlock implementation"),
but turned out to be dead code that is not used by any in-kernel
virtualization guest (Xen uses its own variant of spinlocks implementation
and KVM is not planning to move to byte locks).
Signed-off-by: default avatarJiri Kosina <jkosina@suse.cz>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
      afb33f8c
  7. 19 Jan, 2009 1 commit
    • Michael Ellerman's avatar
      x86: Remove never-called arch_setup_msi_irq() · 422e79a8
      Michael Ellerman authored 
      Since commit 75c46fa6, "x64, x2apic/intr-remap: MSI and MSI-X
support for interrupt remapping infrastructure", x86 has had an
implementation of arch_setup_msi_irqs().

That implementation does not call arch_setup_msi_irq(), instead it calls
setup_irq(). No other x86 code calls arch_setup_msi_irq().

That leaves only arch_setup_msi_irqs() in drivers/pci/msi.c, but that
routine is overridden by the x86 version of arch_setup_msi_irqs().

So arch_setup_msi_irq() is dead code, remove it.
Signed-off-by: default avatarMichael Ellerman <michael@ellerman.id.au>
Signed-off-by: default avatarH. Peter Anvin <hpa@zytor.com>
      422e79a8
  9. 14 Jan, 2009 3 commits
  11. 12 Jan, 2009 5 commits
  13. 10 Jan, 2009 21 commits
  15. 09 Jan, 2009 6 commits
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