From: Borislav Petkov <bp@alien8.de>
To: KVM <kvm@vger.kernel.org>
Cc: LKML <linux-kernel@vger.kernel.org>
Subject: [PATCH] kvm: Fix CR3_PCID_INVD type on 32-bit
Date: Thu, 15 Jan 2015 09:44:56 +0100 [thread overview]
Message-ID: <1421311496-18028-1-git-send-email-bp@alien8.de> (raw)
From: Borislav Petkov <bp@suse.de>
arch/x86/kvm/emulate.c: In function ‘check_cr_write’:
arch/x86/kvm/emulate.c:3552:4: warning: left shift count >= width of type
rsvd = CR3_L_MODE_RESERVED_BITS & ~CR3_PCID_INVD;
happens because sizeof(UL) on 32-bit is 4 bytes but we shift it 63 bits
to the left.
Signed-off-by: Borislav Petkov <bp@suse.de>
---
arch/x86/include/asm/kvm_host.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index d89c6b828c96..a8d07a060136 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -51,7 +51,7 @@
| X86_CR0_NW | X86_CR0_CD | X86_CR0_PG))
#define CR3_L_MODE_RESERVED_BITS 0xFFFFFF0000000000ULL
-#define CR3_PCID_INVD (1UL << 63)
+#define CR3_PCID_INVD BIT_64(63)
#define CR4_RESERVED_BITS \
(~(unsigned long)(X86_CR4_VME | X86_CR4_PVI | X86_CR4_TSD | X86_CR4_DE\
| X86_CR4_PSE | X86_CR4_PAE | X86_CR4_MCE \
--
2.2.0.33.gc18b867
next reply other threads:[~2015-01-15 8:45 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-15 8:44 Borislav Petkov [this message]
2015-01-21 14:59 ` Paolo Bonzini
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