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998c2034c6
Kbuild test robot reports the following problem on ARM:
for 'xen_setup_callback_vector' [-Wmissing-prototypes]
1664 | void xen_setup_callback_vector(void) {}
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The problem is that xen_setup_callback_vector is a x86 only thing, its
definition is present in arch/x86/xen/xen-ops.h but not on ARM. In
events_base.c there is a stub for !CONFIG_XEN_PVHVM but it is not declared
as 'static'.
On x86 the situation is hardly better: drivers/xen/events/events_base.c
doesn't include 'xen-ops.h' from arch/x86/xen/, it includes its namesake
from include/xen/ which also results in a 'no previous prototype' warning.
Currently, xen_setup_callback_vector() has two call sites: one in
drivers/xen/events_base.c and another in arch/x86/xen/suspend_hvm.c. The
former is placed under #ifdef CONFIG_X86 and the later is only compiled
in when CONFIG_XEN_PVHVM.
Resolve the issue by moving xen_setup_callback_vector() declaration to
arch neutral 'include/xen/hvm.h' as the implementation lives in arch
neutral drivers/xen/events/events_base.c.
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Juergen Gross <jgross@suse.com>
Link: https://lkml.kernel.org/r/20200520161600.361895-1-vkuznets@redhat.com
19 lines
386 B
C
19 lines
386 B
C
// SPDX-License-Identifier: GPL-2.0
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#include <linux/types.h>
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#include <xen/xen.h>
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#include <xen/hvm.h>
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#include <xen/features.h>
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#include <xen/interface/features.h>
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#include "xen-ops.h"
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void xen_hvm_post_suspend(int suspend_cancelled)
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{
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if (!suspend_cancelled) {
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xen_hvm_init_shared_info();
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xen_vcpu_restore();
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}
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xen_setup_callback_vector();
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xen_unplug_emulated_devices();
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}
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