linux_dsm_epyc7002/include/xen
Vitaly Kuznetsov 998c2034c6 xen: Move xen_setup_callback_vector() definition to include/xen/hvm.h
Kbuild test robot reports the following problem on ARM:

  for 'xen_setup_callback_vector' [-Wmissing-prototypes]
1664 | void xen_setup_callback_vector(void) {}
|      ^~~~~~~~~~~~~~~~~~~~~~~~~

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
2020-06-11 15:15:19 +02:00
..
arm
interface xen: Move xen_setup_callback_vector() definition to include/xen/hvm.h 2020-06-11 15:15:19 +02:00
acpi.h
balloon.h
events.h x86/entry: Convert XEN hypercall vector to IDTENTRY_SYSVEC 2020-06-11 15:15:15 +02:00
features.h
grant_table.h
hvc-console.h
hvm.h xen: Move xen_setup_callback_vector() definition to include/xen/hvm.h 2020-06-11 15:15:19 +02:00
mem-reservation.h
page.h
platform_pci.h
swiotlb-xen.h
xen-front-pgdir-shbuf.h
xen-ops.h x86/entry: Switch XEN/PV hypercall entry to IDTENTRY 2020-06-11 15:15:08 +02:00
xen.h
xenbus_dev.h
xenbus.h