# HG changeset patch
# User Eddie Dong <eddie.dong@xxxxxxxxx>
# Date 1307607849 -28800
# Node ID 187ed9f1603db8a09f465cc67a8febce716d4744
# Parent 5c3ab1e07ab1c1a903660f1c48a54aa67f738a7e
Lazy FPU for n2 guest
Signed-off-by: Qing He <qing.he@xxxxxxxxx>
Signed-off-by: Eddie Dong <eddie.dong@xxxxxxxxx>
diff -r 5c3ab1e07ab1 -r 187ed9f1603d xen/arch/x86/hvm/vmx/vvmx.c
--- a/xen/arch/x86/hvm/vmx/vvmx.c Thu Jun 09 16:24:09 2011 +0800
+++ b/xen/arch/x86/hvm/vmx/vvmx.c Thu Jun 09 16:24:09 2011 +0800
@@ -820,6 +820,9 @@ static void virtual_vmentry(struct cpu_u
regs->rsp = __get_vvmcs(vvmcs, GUEST_RSP);
regs->rflags = __get_vvmcs(vvmcs, GUEST_RFLAGS);
+ /* updating host cr0 to sync TS bit */
+ __vmwrite(HOST_CR0, v->arch.hvm_vmx.host_cr0);
+
/* TODO: EPT_POINTER */
}
@@ -968,6 +971,9 @@ static void virtual_vmexit(struct cpu_us
regs->rsp = __get_vvmcs(nvcpu->nv_vvmcx, HOST_RSP);
regs->rflags = __vmread(GUEST_RFLAGS);
+ /* updating host cr0 to sync TS bit */
+ __vmwrite(HOST_CR0, v->arch.hvm_vmx.host_cr0);
+
vmreturn(regs, VMSUCCEED);
}
@@ -1315,13 +1321,18 @@ int nvmx_n2_vmexit_handler(struct cpu_us
/*
* decided by L0 and L1 exception bitmap, if the vetor is set by
- * both, L0 has priority on #PF, L1 has priority on others
+ * both, L0 has priority on #PF and #NM, L1 has priority on others
*/
if ( vector == TRAP_page_fault )
{
if ( paging_mode_hap(v->domain) )
nvcpu->nv_vmexit_pending = 1;
}
+ else if ( vector == TRAP_no_device )
+ {
+ if ( v->fpu_dirtied )
+ nvcpu->nv_vmexit_pending = 1;
+ }
else if ( (intr_info & valid_mask) == valid_mask )
{
exec_bitmap =__get_vvmcs(nvcpu->nv_vvmcx, EXCEPTION_BITMAP);
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