[tip: x86/core] x86/debug: Include percpu.h in debugreg.h to get DECLARE_PER_CPU() et al

["tip-bot2 for Sean Christopherson" <tip-bot2@linutronix.de>]

The following commit has been merged into the x86/core branch of tip:

Commit-ID:     2d08a893b87cf9b2f9dbb3afaff60ca4530d55a2
Gitweb:        https://git.kernel.org/tip/2d08a893b87cf9b2f9dbb3afaff60ca4530d55a2
Author:        Sean Christopherson <seanjc@google.com>
AuthorDate:    Thu, 10 Nov 2022 20:17:07 
Committer:     Peter Zijlstra <peterz@infradead.org>
CommitterDate: Wed, 16 Nov 2022 10:12:56 +01:00

x86/debug: Include percpu.h in debugreg.h to get DECLARE_PER_CPU() et al

Include percpu.h to pick up the definition of DECLARE_PER_CPU() and
friends instead of relying on the parent to provide the #include.  E.g.
swapping the order of includes in arch/x86/kvm/vmx/nested.c (simulating
KVM code movement being done for other purposes) results in build errors:

  In file included from arch/x86/kvm/vmx/nested.c:3:
  arch/x86/include/asm/debugreg.h:9:32: error: unknown type name ‘cpu_dr7â€=99
      9 | DECLARE_PER_CPU(unsigned long, cpu_dr7);
        |                                ^~~~~~~

Signed-off-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20221110201707.1976032-1-seanjc@google.com
---
 arch/x86/include/asm/debugreg.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/include/asm/debugreg.h b/arch/x86/include/asm/debugreg.h
index cfdf307..b049d95 100644
--- a/arch/x86/include/asm/debugreg.h
+++ b/arch/x86/include/asm/debugreg.h
@@ -2,8 +2,8 @@
 #ifndef _ASM_X86_DEBUGREG_H
 #define _ASM_X86_DEBUGREG_H
 
-
 #include <linux/bug.h>
+#include <linux/percpu.h>
 #include <uapi/asm/debugreg.h>
 
 DECLARE_PER_CPU(unsigned long, cpu_dr7);