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9cc91f2121
The improved type-checking version of container_of() triggers a warning for
xchg_xen_ulong, pointing out that 'xen_ulong_t' is unsigned, but atomic64_t
contains a signed value:
drivers/xen/events/events_2l.c: In function 'evtchn_2l_handle_events':
drivers/xen/events/events_2l.c:187:1020: error: call to '__compiletime_assert_187' declared with attribute error: pointer type mismatch in container_of()
This adds a cast to work around the warning.
Cc: Ian Abbott <abbotti@mev.co.uk>
Fixes: 85323a991d ("xen: arm: mandate EABI and use generic atomic operations.")
Fixes: daa2ac80834d ("kernel.h: handle pointers to arrays better in container_of()")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Stefano Stabellini <sstabellini@kernel.org>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Acked-by: Ian Abbott <abbotti@mev.co.uk>
30 lines
598 B
C
30 lines
598 B
C
#ifndef _ASM_ARM_XEN_EVENTS_H
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#define _ASM_ARM_XEN_EVENTS_H
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#include <asm/ptrace.h>
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#include <asm/atomic.h>
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enum ipi_vector {
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XEN_PLACEHOLDER_VECTOR,
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/* Xen IPIs go here */
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XEN_NR_IPIS,
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};
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static inline int xen_irqs_disabled(struct pt_regs *regs)
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{
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return raw_irqs_disabled_flags(regs->ARM_cpsr);
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}
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#define xchg_xen_ulong(ptr, val) atomic64_xchg(container_of((long long*)(ptr),\
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atomic64_t, \
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counter), (val))
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/* Rebind event channel is supported by default */
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static inline bool xen_support_evtchn_rebind(void)
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{
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return true;
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}
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#endif /* _ASM_ARM_XEN_EVENTS_H */
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