Messages in this thread Patch in this message | | | From | Shreenidhi Shedi <> | Subject | [PATCH v3] x86/vmware: use unsigned integer for shifting | Date | Fri, 27 May 2022 23:27:37 +0530 |
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From: Shreenidhi Shedi <sshedi@vmware.com>
Shifting signed 32-bit value by 31 bits is implementation-defined behaviour. Using unsigned is better option for this.
Fixes: 4cca6ea04d31 ("x86/apic: Allow x2apic without IR on VMware platform") Cc: stable@vger.kernel.org Signed-off-by: Shreenidhi Shedi <sshedi@vmware.com> --- arch/x86/kernel/cpu/vmware.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/x86/kernel/cpu/vmware.c b/arch/x86/kernel/cpu/vmware.c index c04b933f4..02039ec35 100644 --- a/arch/x86/kernel/cpu/vmware.c +++ b/arch/x86/kernel/cpu/vmware.c @@ -476,8 +476,8 @@ static bool __init vmware_legacy_x2apic_available(void) { uint32_t eax, ebx, ecx, edx; VMWARE_CMD(GETVCPU_INFO, eax, ebx, ecx, edx); - return (eax & (1 << VMWARE_CMD_VCPU_RESERVED)) == 0 && - (eax & (1 << VMWARE_CMD_LEGACY_X2APIC)) != 0; + return !(eax & BIT(VMWARE_CMD_VCPU_RESERVED)) && + (eax & BIT(VMWARE_CMD_LEGACY_X2APIC)); }
#ifdef CONFIG_AMD_MEM_ENCRYPT -- 2.36.1
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