A computer-implemented method, comprising: determining, by a baseboard management controller of a physical host, that the physical host includes at least a first processor and a second processor ; limiting, by the baseboard management controller, access of the first processor to a first range of memory of the physical host and access of the second processor to a second range of memory of the physical host ; loading a first operating system within the first range of memory and a second operating system in the second range of memory ; executing, by the first processor, the first operating system within the first range of memory; and executing, by the second processor, the second operating system within the second range of memory , further comprising the baseboard management controller: configuring one or more first memory controllers, having control over the first range of memory, to provide access to the first processor to the first range of memory; and configuring one or more second memory controllers, not having control over the first range of memory, to deny access to the first processor to other ranges of memory of the physical host. determining, by a baseboard management controller of a physical host, that the physical host includes at least a first processor and a second processor ; limiting, by the baseboard management controller, access of the first processor to a first range of memory of the physical host and access of the second processor to a second range of memory of the physical host ; loading a first operating system within the first range of memory and a second operating system in the second range of memory ; executing, by the first processor, the first operating system within the first range of memory; and executing, by the second processor, the second operating system within the second range of memory , further comprising the baseboard management controller: configuring one or more first memory controllers, having control over the first range of memory, to provide access to the first processor to the first range of memory; and configuring one or more second memory controllers, not having control over the first range of memory, to deny access to the first processor to other ranges of memory of the physical host. executing, by the first processor, the first operating system within the first range of memory; and executing, by the second processor, the second operating system within the second range of memory , further comprising the baseboard management controller: configuring one or more first memory controllers, having control over the first range of memory, to provide access to the first processor to the first range of memory; and configuring one or more second memory controllers, not having control over the first range of memory, to deny access to the first processor to other ranges of memory of the physical host. configuring one or more first memory controllers, having control over the first range of memory, to provide access to the first processor to the first range of memory; and configuring one or more second memory controllers, not having control over the first range of memory, to deny access to the first processor to other ranges of memory of the physical host. <EOS>