linux-kernel - [PATCH v2 1/9] x86/traps: add X86_NR_HW

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Date:   Fri, 14 May 2021 18:43:53 -0700
From:   "H. Peter Anvin" <hpa@...or.com>
To:     Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        Andy Lutomirski <luto@...nel.org>,
        Borislav Petkov <bp@...en8.de>,
        "H. Peter Anvin" <hpa@...or.com>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: [PATCH v2 1/9] x86/traps: add X86_NR_HW_TRAPS to <asm/trapnr.h>

From: "H. Peter Anvin (Intel)" <hpa@...or.com>

The x86 architecture supports up to 32 trap vectors. Add that constant
to <asm/trapnr.h>.

Acked-by: Andy Lutomirski <luto@...nel.org>
Signed-off-by: H. Peter Anvin (Intel) <hpa@...or.com>
---
 arch/x86/include/asm/trapnr.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/x86/include/asm/trapnr.h b/arch/x86/include/asm/trapnr.h
index f5d2325aa0b7..f0baf92da20b 100644
--- a/arch/x86/include/asm/trapnr.h
+++ b/arch/x86/include/asm/trapnr.h
@@ -27,6 +27,7 @@
 #define X86_TRAP_VE		20	/* Virtualization Exception */
 #define X86_TRAP_CP		21	/* Control Protection Exception */
 #define X86_TRAP_VC		29	/* VMM Communication Exception */
+#define X86_NR_HW_TRAPS		32	/* Max hardware trap number */
 #define X86_TRAP_IRET		32	/* IRET Exception */
 
 #endif
-- 
2.31.1