[PATCH v2] KVM: x86: remove ignored type attribute

From: Nick Desaulniers <nick.desaulniers@gmail.com>
To: unlisted-recipients:; (no To-header on input)
Cc: "Nick Desaulniers" <nick.desaulniers@gmail.com>,
	"Paolo Bonzini" <pbonzini@redhat.com>,
	"Radim Krčmář" <rkrcmar@redhat.com>,
	"Thomas Gleixner" <tglx@linutronix.de>,
	"Ingo Molnar" <mingo@redhat.com>,
	"H. Peter Anvin" <hpa@zytor.com>,
	x86@kernel.org, kvm@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH v2] KVM: x86: remove ignored type attribute
Date: Tue, 27 Jun 2017 19:37:14 -0700	[thread overview]
Message-ID: <20170628023714.32158-1-nick.desaulniers@gmail.com> (raw)
In-Reply-To: <20170623044120.6296-1-nick.desaulniers@gmail.com>

The macro insn_fetch marks the 'type' argument as having a specified
alignment.  Type attributes can only be applied to structs, unions, or
enums, but insn_fetch is only ever invoked with integral types, so Clang
produces 19 -Wignored-attributes warnings for this source file.

Signed-off-by: Nick Desaulniers <nick.desaulniers@gmail.com>
---
Changes in v2:
* prefer memcpy
* fix up trailing tabs

 arch/x86/kvm/emulate.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index 7611c034bf95..f9c0359f3fdd 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -900,7 +900,7 @@ static __always_inline int do_insn_fetch_bytes(struct x86_emulate_ctxt *ctxt,
 	if (rc != X86EMUL_CONTINUE)					\
 		goto done;						\
 	ctxt->_eip += sizeof(_type);					\
-	_x = *(_type __aligned(1) *) ctxt->fetch.ptr;			\
+	memcpy(&_x, ctxt->fetch.ptr, sizeof(_type));		\
 	ctxt->fetch.ptr += sizeof(_type);				\
 	_x;								\
 })
-- 
2.11.0
