linux-kernel - [PATCH][next] KVM: x86: simplify zero'ing of entry->ebx

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Date:   Thu, 22 Apr 2021 15:11:29 +0100
From:   Colin King <colin.king@...onical.com>
To:     Paolo Bonzini <pbonzini@...hat.com>,
        Sean Christopherson <seanjc@...gle.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        Jim Mattson <jmattson@...gle.com>,
        Joerg Roedel <joro@...tes.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        x86@...nel.org, "H . Peter Anvin" <hpa@...or.com>,
        kvm@...r.kernel.org
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH][next] KVM: x86: simplify zero'ing of entry->ebx

From: Colin Ian King <colin.king@...onical.com>

Currently entry->ebx is being zero'd by masking itself with zero.
Simplify this by just assigning zero, cleans up static analysis
warning.

Addresses-Coverity: ("Bitwise-and with zero")
Signed-off-by: Colin Ian King <colin.king@...onical.com>
---
 arch/x86/kvm/cpuid.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c
index 57744a5d1bc2..9bcc2ff4b232 100644
--- a/arch/x86/kvm/cpuid.c
+++ b/arch/x86/kvm/cpuid.c
@@ -851,7 +851,7 @@ static inline int __do_cpuid_func(struct kvm_cpuid_array *array, u32 function)
 		entry->eax &= SGX_ATTR_DEBUG | SGX_ATTR_MODE64BIT |
 			      SGX_ATTR_PROVISIONKEY | SGX_ATTR_EINITTOKENKEY |
 			      SGX_ATTR_KSS;
-		entry->ebx &= 0;
+		entry->ebx = 0;
 		break;
 	/* Intel PT */
 	case 0x14:
-- 
2.30.2