[Xen-ia64-devel] [PATCH]Guarantee VTi guest can get correct frequency base

["Zhang, Xiantao" <xiantao.zhang@xxxxxxxxx>]

Because some platforms don't implement pal_freq_base call in PAL, in
this 
case, call host SAL sal_freq_base instead to get correct freqency base
value.

diff -r 5e751dddf4d0 xen/arch/ia64/vmx/pal_emul.c
--- a/xen/arch/ia64/vmx/pal_emul.c      Tue Feb 28 17:24:03 2006
+++ b/xen/arch/ia64/vmx/pal_emul.c      Mon Mar  6 15:16:20 2006
@@ -20,6 +20,7 @@
 
 #include <asm/vmx_vcpu.h>
 #include <asm/pal.h>
+#include <asm/sal.h>
 
 static void
 get_pal_parameters (VCPU *vcpu, UINT64 *gr29,
@@ -182,8 +183,18 @@
 static struct ia64_pal_retval
 pal_freq_base(VCPU *vcpu){
     struct ia64_pal_retval result;
+    struct ia64_sal_retval isrv;
 
     PAL_CALL(result,PAL_FREQ_BASE, 0, 0, 0);+    if(result.v0 == 0){
//PAL_FREQ_BASE may not be implemented in some platforms, call SAL
instead.
+        SAL_CALL(isrv, SAL_FREQ_BASE, 
+                SAL_FREQ_BASE_PLATFORM, 0, 0, 0, 0, 0, 0);
+        result.status = isrv.status;
+        result.v0 = isrv.v0;
+        result.v1 = result.v2 =0;
+    }
     return result;
 }
Thanks  
     Xiantao
CSD-OTC PRC Virtualization 
Intel (China) Limited

Attachment: ensure_freq_base.patch
Description: ensure_freq_base.patch

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