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xen: add a dummy xc_hvm_inject_msi for Xen < 4.2

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xc_hvm_inject_msi is only available on Xen >= 4.2: add a dummy
compatibility function for Xen < 4.2.

Also enable msi support only on Xen >= 4.2.

Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Acked-by: Anthony PERARD <anthony.perard@citrix.com>
This commit is contained in:
Stefano Stabellini 2012-04-17 16:56:51 +00:00
parent 8688e0652d
commit 4c9f8d1b4e
4 changed files with 27 additions and 2 deletions
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10
hw/xen.h
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@ -57,4 +57,14 @@ void xen_register_framebuffer(struct MemoryRegion *mr);
# define HVM_MAX_VCPUS 32
#endif
static inline int xen_msi_support(void)
{
#if defined(CONFIG_XEN_CTRL_INTERFACE_VERSION) \
&& CONFIG_XEN_CTRL_INTERFACE_VERSION >= 420
return xen_enabled();
#else
return 0;
#endif
}
#endif /* QEMU_HW_XEN_H */