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[Xen-ia64-devel] [PATCH] This is the second patch to merge vcpu.c

To: "Magenheimer, Dan \(HP Labs Fort Collins\)" <dan.magenheimer@xxxxxx>
Subject: [Xen-ia64-devel] [PATCH] This is the second patch to merge vcpu.c
From: "Xu, Anthony" <anthony.xu@xxxxxxxxx>
Date: Mon, 19 Sep 2005 19:54:39 +0800
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Thread-topic: [Xen-ia64-devel] [PATCH] This is the second patch to merge vcpu.c

Thanks, Dan, I have noticed that the first patch for merging vcpu.c had
been cheked in.
This patch is based on ver.6866, and has gone through your stress-test.

Following things are done in this patch.
1. Add r4,r5,r6,r7,eml_unat,rfi_pfs six members at the end of pt_regs, 
   thus VMM for non-VT domain doesn't need to save/restore SWITCH_STACK
   just in case VMM may need modify guest r4,r5,r6,r7 value, eml_unat is
   in case VMM may need modify guest unat, rfi_pfs is used to emulate
guest rfi
   instruction for VT domain, and is used as dummy member for alignment
of F6,
   F7 etc. in pt_regs for non-VT domain. And add code to save/restore
   r7,eml_unat in minstate.h and entry.s for non-VT domain. and remove
code to
   save/restore SWITCH_STACK in ivt.S for non-VT domain.
2. Originally guest banked registers of VT domain are saved directly in
VPD. Now
   Guest banked registers of VT domain are saved to pt_regs at the entry
of VMM,
   just for consistence with non-VT domain, vmx_vcpu_bsw0 and
vmx_vcpu_bsw1 are 
   rewriten for accomodating this change.
3. After above changes, all guest registers and nat bits are saved at
same place
   both for VTI domain and for non-VTI domain, so vcpu_get/set_gr and 
   rse_get/set_gr are merged, and all these functions can handle guest
4. Merged vcpu_bsw0 and vcpu_bsw1, Now VMM uses
vgr[16],vbgr[16],vnat,vbnat in 
   mapped_regs_t struct (is also vpd) to emuate guest banking switch
5. Removed some CONFIG_VTIs and cleaned up some unused structure members
and codes.

Signed-off-by Anthony Xu <Anthony.xu@xxxxxxxxx>


Attachment: merge_vcpu_2.patch
Description: merge_vcpu_2.patch

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