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| author | Don Slutz | 2014-10-20 21:49:12 +0200 |
|---|---|---|
| committer | Stefano Stabellini | 2014-10-30 15:16:38 +0100 |
| commit | 37f9e258b64b3cf97c7c78df60660100c9eb5a21 (patch) | |
| tree | b1a3f4c8e3b4d968d336730ac93c47e77b630f0e /include | |
| parent | virtio: link the rng backend through an alias property (diff) | |
| download | qemu-37f9e258b64b3cf97c7c78df60660100c9eb5a21.tar.gz qemu-37f9e258b64b3cf97c7c78df60660100c9eb5a21.tar.xz qemu-37f9e258b64b3cf97c7c78df60660100c9eb5a21.zip | |
xen-hvm.c: Add support for Xen access to vmport
This adds synchronisation of the 6 vcpu registers (only 32bits of
them) that vmport.c needs between Xen and QEMU.
This is to avoid a 2nd and 3rd exchange between QEMU and Xen to
fetch and put these 6 vcpu registers used by the code in vmport.c
and vmmouse.c
The registers are passed in the new shared page provided by
HVM_PARAM_VMPORT_REGS_PFN.
Add new array to XenIOState that allows selection of current_cpu by
vcpu id.
Now pass XenIOState to handle_ioreq().
Add new routines regs_to_cpu(), regs_from_cpu(), and
handle_vmport_ioreq().
Signed-off-by: Don Slutz <dslutz@verizon.com>
Reviewed-by: Paul Durrant <paul.durrant@citrix.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/hw/xen/xen_common.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/include/hw/xen/xen_common.h b/include/hw/xen/xen_common.h index 07731b9289..95612a40c1 100644 --- a/include/hw/xen/xen_common.h +++ b/include/hw/xen/xen_common.h @@ -164,4 +164,19 @@ void destroy_hvm_domain(bool reboot); /* shutdown/destroy current domain because of an error */ void xen_shutdown_fatal_error(const char *fmt, ...) GCC_FMT_ATTR(1, 2); +#ifdef HVM_PARAM_VMPORT_REGS_PFN +static inline int xen_get_vmport_regs_pfn(XenXC xc, domid_t dom, + unsigned long *vmport_regs_pfn) +{ + return xc_get_hvm_param(xc, dom, HVM_PARAM_VMPORT_REGS_PFN, + vmport_regs_pfn); +} +#else +static inline int xen_get_vmport_regs_pfn(XenXC xc, domid_t dom, + unsigned long *vmport_regs_pfn) +{ + return -ENOSYS; +} +#endif + #endif /* QEMU_HW_XEN_COMMON_H */ |