x86info: dump kvm cpuid's

["Michael S. Tsirkin" <mst@xxxxxxxxxx>]

The following makes 'x86info -r' dump kvm cpu ids
(signature+features) when running in a vm.

On the guest we see the signature and the features:
eax in: 0x40000000, eax = 00000000 ebx = 4b4d564b ecx = 564b4d56 edx = 0000004d
eax in: 0x40000001, eax = 0100007b ebx = 00000000 ecx = 00000000 edx = 00000000

On the host it just adds a couple of zero lines:
eax in: 0x40000000, eax = 00000000 ebx = 00000000 ecx = 00000000 edx = 00000000
eax in: 0x40000001, eax = 00000000 ebx = 00000000 ecx = 00000000 edx = 00000000

Signed-off-by: Michael S. Tsirkin <mst@xxxxxxxxxx>

---

Dave - not sure whether there's a mailing list for x86info.
The patch is on top of the master branch in
git://git.codemonkey.org.uk/x86info.git

Thanks!

diff --git a/x86info.c b/x86info.c
index 22c4734..dee5ed1 100644
--- a/x86info.c
+++ b/x86info.c
@@ -44,6 +44,7 @@ static void display_detailed_info(struct cpudata *cpu)
 
 		if (cpu->maxei2 >=0xC0000000)
 			dump_raw_cpuid(cpu->number, 0xC0000000, cpu->maxei2);
+		dump_raw_cpuid(cpu->number, 0x40000000, 0x40000001);
 	}
 
 	if (show_cacheinfo) {
--
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