# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1202291563 0
# Node ID 744ec35f1e3ab5aa6c5301c872c2f0685a46cd34
# Parent 98ec73f3b3f1defb8ead13ffaa04ac1576ef787b
vmx realmode: Implement new x86_emulate hook load_fpu_ctxt().
Signed-off-by: Keir Fraser <keir.fraser@xxxxxxxxxx>
xen-unstable changeset: 16861:5a3448506d9c2532ef1e45b1571ac20ee264f6ee
xen-unstable date: Wed Jan 23 14:30:56 2008 +0000
---
xen/arch/x86/hvm/vmx/realmode.c | 10 +++++++++-
xen/arch/x86/hvm/vmx/vmx.c | 2 +-
xen/include/asm-x86/hvm/vmx/vmx.h | 1 +
3 files changed, 11 insertions(+), 2 deletions(-)
diff -r 98ec73f3b3f1 -r 744ec35f1e3a xen/arch/x86/hvm/vmx/realmode.c
--- a/xen/arch/x86/hvm/vmx/realmode.c Wed Feb 06 09:52:07 2008 +0000
+++ b/xen/arch/x86/hvm/vmx/realmode.c Wed Feb 06 09:52:43 2008 +0000
@@ -471,6 +471,13 @@ static int realmode_inject_sw_interrupt(
rm_ctxt->exn_insn_len = insn_len;
return X86EMUL_OKAY;
+}
+
+static void realmode_load_fpu_ctxt(
+ struct x86_emulate_ctxt *ctxt)
+{
+ if ( !current->fpu_dirtied )
+ vmx_do_no_device_fault();
}
static struct x86_emulate_ops realmode_emulator_ops = {
@@ -491,7 +498,8 @@ static struct x86_emulate_ops realmode_e
.cpuid = realmode_cpuid,
.hlt = realmode_hlt,
.inject_hw_exception = realmode_inject_hw_exception,
- .inject_sw_interrupt = realmode_inject_sw_interrupt
+ .inject_sw_interrupt = realmode_inject_sw_interrupt,
+ .load_fpu_ctxt = realmode_load_fpu_ctxt
};
void vmx_realmode(struct cpu_user_regs *regs)
diff -r 98ec73f3b3f1 -r 744ec35f1e3a xen/arch/x86/hvm/vmx/vmx.c
--- a/xen/arch/x86/hvm/vmx/vmx.c Wed Feb 06 09:52:07 2008 +0000
+++ b/xen/arch/x86/hvm/vmx/vmx.c Wed Feb 06 09:52:43 2008 +0000
@@ -1214,7 +1214,7 @@ static void __update_guest_eip(unsigned
vmx_inject_exception(TRAP_debug, HVM_DELIVER_NO_ERROR_CODE, 0);
}
-static void vmx_do_no_device_fault(void)
+void vmx_do_no_device_fault(void)
{
struct vcpu *v = current;
diff -r 98ec73f3b3f1 -r 744ec35f1e3a xen/include/asm-x86/hvm/vmx/vmx.h
--- a/xen/include/asm-x86/hvm/vmx/vmx.h Wed Feb 06 09:52:07 2008 +0000
+++ b/xen/include/asm-x86/hvm/vmx/vmx.h Wed Feb 06 09:52:43 2008 +0000
@@ -33,6 +33,7 @@ void vmx_do_resume(struct vcpu *);
void vmx_do_resume(struct vcpu *);
void set_guest_time(struct vcpu *v, u64 gtime);
void vmx_vlapic_msr_changed(struct vcpu *v);
+void vmx_do_no_device_fault(void);
void vmx_cpuid_intercept(
unsigned int *eax, unsigned int *ebx,
unsigned int *ecx, unsigned int *edx);
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