From a2ae9df7c991eca6c1ee6f42dbb18701a64175c3 Mon Sep 17 00:00:00 2001
From: Paolo Bonzini <pbonzini@redhat.com>
Date: Tue, 4 Nov 2014 18:31:19 +0100
Subject: [PATCH] kvm: x86: vmx: avoid returning bool to distinguish success
 from error

Return a negative error code instead, and WARN() when we should be covering
the entire 2-bit space of vmcs_field_type's return value.  For increased
robustness, add a BUILD_BUG_ON checking the range of vmcs_field_to_offset.

Suggested-by: Tiejun Chen <tiejun.chen@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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