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From e0443f1fc78f2a79c073dbdf4133bec41c4c0591 Mon Sep 17 00:00:00 2001
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From: "Richard W.M. Jones" <rjones@redhat.com>
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Date: Fri, 4 Oct 2019 18:30:01 +0100
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Subject: [PATCH 20/25] helper: Fix KVM signature.
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Thanks: Paolo Bonzini.
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---
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virt-what-cpuid-helper.c | 9 +++++----
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1 file changed, 5 insertions(+), 4 deletions(-)
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diff --git a/virt-what-cpuid-helper.c b/virt-what-cpuid-helper.c
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index 0cd4a6f..9c6cdb2 100644
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--- a/virt-what-cpuid-helper.c
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+++ b/virt-what-cpuid-helper.c
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@@ -28,15 +28,16 @@
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#if defined(__i386__) || defined(__x86_64__)
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/* Known x86 hypervisor signatures. Note that if you add a new test
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- * to virt-what.in you may need to update this list. The signature is
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- * always 12 bytes except in the case of KVM.
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+ * to virt-what.in you may need to update this list. Note the
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+ * signature is always 12 bytes long, plus we add \0 to the end to
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+ * make it 13 bytes.
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*/
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static int
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-known_signature (char *sig)
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+known_signature (const char *sig)
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{
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return
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strcmp (sig, "bhyve bhyve ") == 0 ||
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- strcmp (sig, "KVMKVMKVM") == 0 ||
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+ memcmp (sig, "KVMKVMKVM\0\0\0", 12) == 0 ||
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strcmp (sig, "LKVMLKVMLKVM") == 0 ||
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strcmp (sig, "Microsoft Hv") == 0 ||
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strcmp (sig, "OpenBSDVMM58") == 0 ||
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--
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2.18.4
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