On 10/21/2014 03:10 PM, Andrew Cooper wrote:
On 21/10/14 20:01, Boris Ostrovsky wrote:
diff --git a/arch/x86/include/asm/xen/cpuid.h b/arch/x86/include/asm/xen/cpuid.h
new file mode 100644
index 000..e57a457
--- /dev/null
+++ b/arch/x86/include/asm/xen/cpuid.h
@@ -0,0 +1,81 @@
+/***
On 21/10/14 20:01, Boris Ostrovsky wrote:
> When hardware supports APIC/x2APIC virtualization we don't need to use pirqs
> for MSI handling and instead use APIC since most APIC accesses (MMIO or MSR)
> will now be processed without VMEXITs.
>
> As an example, netperf on the original code produces t
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