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| author | Ian Campbell <ian.campbell@citrix.com> | 2013-02-20 11:48:06 +0000 |
|---|---|---|
| committer | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2013-02-20 08:45:07 -0500 |
| commit | c81611c4e96f595a80d8be9367c385d2c116428b (patch) | |
| tree | 94c1b31034506d8b73b6d9b2c2e0e2331d0fd450 /arch/x86 | |
| parent | 76eaca031f0af2bb303e405986f637811956a422 (diff) | |
| download | linux-c81611c4e96f595a80d8be9367c385d2c116428b.tar.bz2 | |
xen: event channel arrays are xen_ulong_t and not unsigned long
On ARM we want these to be the same size on 32- and 64-bit.
This is an ABI change on ARM. X86 does not change.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Cc: Jan Beulich <JBeulich@suse.com>
Cc: Keir (Xen.org) <keir@xen.org>
Cc: Tim Deegan <tim@xen.org>
Cc: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: xen-devel@lists.xen.org
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/include/asm/xen/events.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/include/asm/xen/events.h b/arch/x86/include/asm/xen/events.h index cc146d51449e..ca842f2769ef 100644 --- a/arch/x86/include/asm/xen/events.h +++ b/arch/x86/include/asm/xen/events.h @@ -16,4 +16,7 @@ static inline int xen_irqs_disabled(struct pt_regs *regs) return raw_irqs_disabled_flags(regs->flags); } +/* No need for a barrier -- XCHG is a barrier on x86. */ +#define xchg_xen_ulong(ptr, val) xchg((ptr), (val)) + #endif /* _ASM_X86_XEN_EVENTS_H */ |