From 257b9a5faab5849fa61f1a523b429dc279d33cc3 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Radim=20Kr=C4=8Dm=C3=A1=C5=99?= <rkrcmar@redhat.com>
Date: Fri, 22 May 2015 18:45:11 +0200
Subject: [PATCH] KVM: x86: use correct APIC ID on x2APIC transition
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SDM April 2015, 10.12.5 State Changes From xAPIC Mode to x2APIC Mode
• Any APIC ID value written to the memory-mapped local APIC ID register
  is not preserved.

Fix it by sourcing vcpu_id (= initial APIC ID) instead of memory-mapped
APIC ID.  Proper use of apic functions would result in two calls to
recalculate_apic_map(), so this patch makes a new helper.

Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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