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hw/xen: Add evtchn operations to allow redirection to internal emulation

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The existing implementation calling into the real libxenevtchn moves to
a new file hw/xen/xen-operations.c, and is called via a function table
which in a subsequent commit will also be able to invoke the emulated
event channel support.

Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
This commit is contained in:
David Woodhouse 2023-01-01 17:54:41 +00:00
parent 831b0db8ab
commit b6cacfea0b
13 changed files with 242 additions and 57 deletions
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12
include/hw/xen/xen_common.h
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@ -28,18 +28,7 @@ extern xc_interface *xen_xc;
#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 40701
typedef xc_interface xenforeignmemory_handle;
typedef xc_evtchn xenevtchn_handle;
typedef xc_gnttab xengnttab_handle;
typedef evtchn_port_or_error_t xenevtchn_port_or_error_t;
#define xenevtchn_open(l, f) xc_evtchn_open(l, f);
#define xenevtchn_close(h) xc_evtchn_close(h)
#define xenevtchn_fd(h) xc_evtchn_fd(h)
#define xenevtchn_pending(h) xc_evtchn_pending(h)
#define xenevtchn_notify(h, p) xc_evtchn_notify(h, p)
#define xenevtchn_bind_interdomain(h, d, p) xc_evtchn_bind_interdomain(h, d, p)
#define xenevtchn_unmask(h, p) xc_evtchn_unmask(h, p)
#define xenevtchn_unbind(h, p) xc_evtchn_unbind(h, p)
#define xengnttab_open(l, f) xc_gnttab_open(l, f)
#define xengnttab_close(h) xc_gnttab_close(h)
@ -69,7 +58,6 @@ static inline void *xenforeignmemory_map(xc_interface *h, uint32_t dom,
#else /* CONFIG_XEN_CTRL_INTERFACE_VERSION >= 40701 */
#include <xenevtchn.h>
#include <xengnttab.h>
#include <xenforeignmemory.h>