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Ian Campbell
b7f76a699d
libxenevtchn will provide a stable API and ABI for accessing the evtchn device. The functions are moved into the xenevtchn namespace to make a clean break from libxc and avoid ambiguity regarding which interfaces are stable. All in-tree users are updated to use the new names. Upon request (via #define XC_WANT_COMPAT_EVTCHN_API) libxenctrl will provide a compat API for the old names. This is used by qemu-xen for the time being. qemu-xen-traditional is updated in lockstep. This leaves a few event channel related functions which go via privcmd (EVTCHNOP) rather than ioctls on the /dev/xen/evtchn device in libxenctrl. Specifically: - xc_evtchn_alloc_unbound - xc_evtchn_reset - xc_evtchn_status Note that xc_evtchn_alloc_unbound's functionality is also provided by xenevtchn_bind_unbound_port() (née xc_evtchn_bind_unbound_port) and is probably redundant. These functions do not appear to be needed by qemu-dm, qemu-pv (provision of device model to HVM guests and PV backends respectively) or by libvchan suggesting they are not needed by non-toolstack uses of event channels. QEMU does use these in hw/xenpv/xen_domainbuild.c but that is a "toolstack use". The new library uses a version script to ensure that only expected symbols are exported and to version them such that ABI guarantees can be kept in the future. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Acked-by: Wei Liu <wei.liu2@citrix.com> Acked-by: Ian Jackson <ian.jackson@eu.citrix.com> [ ijc -- updated MINIOS_UPSTREAM_REVISION and QEMU_TRADITIONAL_REVISION ]
31 lines
553 B
Makefile
31 lines
553 B
Makefile
XEN_ROOT=$(CURDIR)/../../..
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include $(XEN_ROOT)/tools/Rules.mk
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CFLAGS += -Werror
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CFLAGS += $(CFLAGS_libxenctrl)
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CFLAGS += $(CFLAGS_libxenguest)
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CFLAGS += $(CFLAGS_libxenevtchn)
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CFLAGS += $(CFLAGS_xeninclude)
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TARGETS-y := xen-access
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TARGETS := $(TARGETS-y)
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.PHONY: all
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all: build
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.PHONY: build
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build: $(TARGETS)
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.PHONY: clean
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clean:
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$(RM) *.o $(TARGETS) *~ $(DEPS)
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.PHONY: distclean
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distclean: clean
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xen-access: xen-access.o Makefile
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$(CC) -o $@ $< $(LDFLAGS) $(LDLIBS_libxenctrl) $(LDLIBS_libxenguest) $(LDLIBS_libxenevtchn)
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-include $(DEPS)
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