linux-kernel - [PATCH] x86/LDT: avoid warning in 32-bit builds with older gcc

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Message-Id: <5A8AF2AA02000078001A91E9@prv-mh.provo.novell.com>
Date:   Mon, 19 Feb 2018 07:52:10 -0700
From:   "Jan Beulich" <JBeulich@...e.com>
To:     <mingo@...e.hu>, <tglx@...utronix.de>, <hpa@...or.com>
Cc:     <linux-kernel@...r.kernel.org>
Subject: [PATCH] x86/LDT: avoid warning in 32-bit builds with older gcc

BUG() doesn't always imply "no return", and hence should be followed by
a return statement even if that's obviously (to a human) unreachable.

Signed-off-by: Jan Beulich <jbeulich@...e.com>
---
 arch/x86/include/asm/mmu_context.h |    1 +
 1 file changed, 1 insertion(+)

--- 4.16-rc2/arch/x86/include/asm/mmu_context.h
+++ 4.16-rc2-ix86-ldt_slot_va-retval/arch/x86/include/asm/mmu_context.h
@@ -74,6 +74,7 @@ static inline void *ldt_slot_va(int slot
 	return (void *)(LDT_BASE_ADDR + LDT_SLOT_STRIDE * slot);
 #else
 	BUG();
+	return (void *)fix_to_virt(FIX_HOLE);
 #endif
 }