Systems and methods for validating virtual address translation. An example processing system comprises: a processing core to execute a first application associated with a first privilege level and a second application associated with a second privilege level, wherein a first set of privileges associated with the first privilege level includes a second set of privileges associated with the second privilege level; and an address validation component to validate, in view of an address translation data structure maintained by the first application, a mapping of a first address defined in a first address space of the second application to a second address defined in a second address space of the second application.

A computer processor that implements pre-translation of virtual addresses with target registers is disclosed. The computer processor may include a register file comprising one or more registers. The computer processor may include processing logic. The processing logic may receive a value to store in a register of one or more registers. The processing logic may store the value in the register. The processing logic may designate the received value as a virtual instruction address, the virtual instruction address having a corresponding virtual base page number. The processing logic may translate the virtual base page number to a corresponding real base page number and zero or more real page numbers corresponding to zero or more virtual page numbers adjacent to the virtual base page number. The processing logic may further store in the register of the one or more registers the real base page number and the zero or more real page numbers.

According to one or more embodiments of the present invention, a computer implemented method includes receiving, at a secure interface control of a computer system, an access request for a data structure related to a secure entity in a secure domain of the computer system. The secure interface control can check for a virtual storage address associated with a location of the data structure. The secure interface control can request an address translation using a virtual address space of a non-secure entity of the computer system based on determining that the location of the data structure is associated with the virtual storage address. The secure interface control can access the data structure based on a result of the address translation.

A method performed by a slave device to obtain a host memory address includes: inquiring a description list to obtain information of an allocated memory of a host; dividing the allocated memory into N storage spaces according to the information; using a first memory space of the N storage spaces to store a first level look-up table indicating physical addresses of the N storage spaces; dividing the first memory space into M storage spaces; storing a second level look-up table in the slave device to indicate physical addresses of the M storage spaces; inquiring the second level look-up table according to a logical address and obtaining a first index indicating a physical address of one of the M storage spaces; and inquiring the first level look-up table according to the first index and obtaining a second index indicating a physical address of one of the N storage spaces.

The disclosed computer-implemented method may include (1) receiving, at a storage device via a cache-coherent interconnect, a first request to access data at one or more host addresses of a coherent memory space of an external host processor, (2) updating, in response to the first request, one or more statistics associated with accessing the data at the one or more host addresses, (3) receiving, at the storage device via the cache-coherent interconnect, a second request to perform an operation associated with the one or more statistics, and (4) using the one or more statistics to perform the operation. Various other methods, systems, and computer-readable media are also disclosed.

A system for providing data storage includes at least one virtual server comprising at least one virtual storage device; at least one physical server comprising at least one physical storage device; a data structure, stored on each of the at least one physical storage devices, the data structure comprising: at least one table of contents, the table of contents configured to map storage locations within the virtual storage device to node structures that provide pointers to corresponding storage locations within the physical storage device; a tree structure having a predetermined number of hierarchical levels, each level containing node structures, the node structures containing pointers that point to other node structures or to data locations on the physical storage device; and one or more core software modules.

In one embodiment, a storage unit stores a table tree and verifier tree. The table tree includes parent and child tables. The verifier tree includes parent and child verifiers associated with the parent and child tables, respectively. The parent verifier is used for verifying the child table and child verifier. A device stores a secure table tree corresponded to the table tree and used for address translation and a secure verifier tree corresponded to the verifier tree, to a secure storage unit. The device executes verification, based on verification information calculated based on a first child table and first child verifier in the storage unit and a first parent verifier in the secure verifier tree. The device sets the second address of the secure table tree such that the second address designates data in the first storage unit.

Managing translation invalidation includes: in response to determining that a first invalidation message (IM) applies to a subset of virtual addresses (VAs) consisting of fewer than all VAs associated with a first set of translation context (TC) values, searching VA-indexed structure(s) to find and invalidate any entries that correspond to a VA in the subset; in response to determining that a second IM applies to all VAs associated with a second set of TC values and that no entry exists in invalidation-tracking structure(s) corresponding to the second set, bypassing searching any VA-indexed structure(s); and in response to determining that a third IM applies to all VAs associated with a third set of TC values and that at least one entry exists in the invalidation-tracking structure(s) corresponding to the third set, storing invalidation information in the invalidation-tracking structure(s) to invalidate the third set and delaying searching any VA-indexed structure(s).

Techniques are disclosed relating to private memory management using a mapping thread, which may be persistent. In some embodiments, a graphics processor is configured to generate a pool of private memory pages for a set of graphics work that includes multiple threads. The processor may maintain a translation table configured to map private memory addresses to virtual addresses based on identifiers of the threads. The processor may execute a mapping thread to receive a request to allocate a private memory page for a requesting thread, select a private memory page from the pool in response to the request, and map the selected page in the translation table for the requesting. The processor may then execute one or more instructions of the requesting thread to access a private memory space, wherein the execution includes translation of a private memory address to a virtual address based on the mapped page in the translation table. The mapping thread may be a persistent thread for which resources are allocated for an entirety of a time interval over which the set of graphics work is executed.

A hypervisor that allocates the computer resource of a physical computer to one or more logical partitions allocates the computer resource to be allocated to the logical partitions to the logical partitions; generates, as address conversion information, the relationship between a guest physical address and a host physical address with respect to a memory of the computer resource; enables a first address conversion portion of a processor using the address conversion information; disables the first address conversion portion after the starting of a guest OS is completed; and causes an application to be executed.