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    73.
    发明专利
    未知

    公开(公告)号：AT500553T

    公开(公告)日：2011-03-15

    申请号：AT05108507

    申请日：2004-05-06

    Applicant: IBM

    Inventor： SLEGEL TIMOTHY ,  HELLER LISA ,  PFEFFER ERWIN ,  PLAMBECK KENNETH

    IPC: G06F12/10 ,  G06F9/30 ,  G06F9/312 ,  G06F9/38 ,  G06F12/08

    Abstract: A method for invalidating translation table entries and clearing corresponding dynamic address translation (DAT) table entries of a translation lookaside buffer (TLB) associated with a processing unit in a computer system, the computer system comprising one or more address translation tables providing translation information to translate virtual addresses to real addresses, wherein address translation table entry information is maintained in the TLB, the method comprising: a) fetching for execution a multifunction Invalidate DAT Table Entry (IDTE) machine instruction, the IDTE instruction comprising an opcode field identifying said instruction and an information field comprising: 1) a first register field for identifying a first register for indicating an origin and type of an address translation table containing a range of one or more entries to be invalidated, 2) a second register field for identifying a second register for including indices used to select a translation table entry in a type of address translation table indicated by the first register, and an option bit for indicating whether a clear by address space control element (ASCE) operation or an invalidating-and-clearing operation is to be performed, and a range field for identifying a number of additional translation table entries, in the address translation table indicated by the first register, to be invalidated, and 3) a third register field for identifying a third register for indicating an origin and type of address translation table to be used when the clear by address space control element operation is to be performed for only selectively clearing TLB entries; and b) executing the fetched IDTE machine instruction, the executing step comprising: i. determining, from the option bit in the second register, whether a clear by address space control element operation is to be performed; ii. responsive to the option bit indicating that the clear by address space control element operation is to be performed, clearing the TLB, independent of the content of the first register, of those entries in which the address translation table origin of a translation table was used to create the entries in the TLB corresponds to the address translation table origin in the third register; iii. responsive to the option bit indicating that the clear by address space control element operation is not to be performed, invalidating the range of address translation table entries of a translation table identified by the range field, and clearing the TLB entries corresponding to the invalidated entries.

    DYNAMIC ADDRESS TRANSLATION WITH FRAME MANAGEMENT
    77.
    发明专利
    DYNAMIC ADDRESS TRANSLATION WITH FRAME MANAGEMENT 未知

    公开(公告)号：CA2701086A1

    公开(公告)日：2009-07-16

    申请号：CA2701086

    申请日：2009-01-05

    Applicant: IBM

    Inventor： GREINER DAN ,  GAINEY JR CHARLES ,  HELLER LISA ,  OSISEK DAMIAN ,  SLEGEL TIMOTHY ,  SITTMANN III GUSTAV

    IPC: G06F12/14 ,  G06F12/10

    Abstract: What is disclosed is a set key and clear frame management function defined for a machine architecture of a computer system. In one embodiment, a machine instruction is obtained which identifies a first and second general register. Obtained from the first general register is a frame size field indicating whether a storage frame is one of a small block or a large block of data. Obtained from the second general register is an operand address of a storage frame upon which the instruction is to be performed. If the storage frame is a small block, the instruction is performed only on the small block. If the indicated storage frame is a large block of data, an operand address of an initial first block of data within the large block of data is obtained from the second general register. The frame management instruction is performed on all blocks starting from the initial first block.

    78.
    发明专利
    未知

    公开(公告)号：DE602004011018T2

    公开(公告)日：2008-12-24

    申请号：DE602004011018

    申请日：2004-05-06

    Applicant: IBM

    Inventor： SLEGEL JOHN ,  HELLER LISA ,  PFEFFER ERWIN ,  PLAMBECK KENNETH

    IPC: G06F12/10 ,  G06F9/30 ,  G06F9/38 ,  G06F12/08

    Abstract: A method for invalidating translation table entries and clearing corresponding dynamic address translation (DAT) table entries of a translation lookaside buffer (TLB) associated with a processing unit in a computer system, the computer system comprising one or more address translation tables providing translation information to translate virtual addresses to real addresses, wherein address translation table entry information is maintained in the TLB, the method comprising: a) fetching for execution a multifunction Invalidate DAT Table Entry (IDTE) machine instruction, the IDTE instruction comprising an opcode field identifying said instruction and an information field comprising: 1) a first register field for identifying a first register for indicating an origin and type of an address translation table containing a range of one or more entries to be invalidated, 2) a second register field for identifying a second register for including indices used to select a translation table entry in a type of address translation table indicated by the first register, and an option bit for indicating whether a clear by address space control element (ASCE) operation or an invalidating-and-clearing operation is to be performed, and a range field for identifying a number of additional translation table entries, in the address translation table indicated by the first register, to be invalidated, and 3) a third register field for identifying a third register for indicating an origin and type of address translation table to be used when the clear by address space control element operation is to be performed for only selectively clearing TLB entries; and b) executing the fetched IDTE machine instruction, the executing step comprising: i. determining, from the option bit in the second register, whether a clear by address space control element operation is to be performed; ii. responsive to the option bit indicating that the clear by address space control element operation is to be performed, clearing the TLB, independent of the content of the first register, of those entries in which the address translation table origin of a translation table was used to create the entries in the TLB corresponds to the address translation table origin in the third register; iii. responsive to the option bit indicating that the clear by address space control element operation is not to be performed, invalidating the range of address translation table entries of a translation table identified by the range field, and clearing the TLB entries corresponding to the invalidated entries.

    Invalidating storage, clearing buffer entries
    79.
    发明专利
    Invalidating storage, clearing buffer entries 未知

    公开(公告)号：GB2414842B

    公开(公告)日：2006-07-05

    申请号：GB0518904

    申请日：2004-05-06

    Applicant: IBM

    Inventor： SLEGEL TIMOTHY J ,  HELLER LISA ,  PFEFFER ERWIN ,  PLAMBECK KENNETH

    IPC: G06F12/08 ,  G06F9/30 ,  G06F9/38 ,  G06F12/10

    Abstract: A method for invalidating translation table entries and clearing corresponding dynamic address translation (DAT) table entries of a translation lookaside buffer (TLB) associated with a processing unit in a computer system, the computer system comprising one or more address translation tables providing translation information to translate virtual addresses to real addresses, wherein address translation table entry information is maintained in the TLB, the method comprising: a) fetching for execution a multifunction Invalidate DAT Table Entry (IDTE) machine instruction, the IDTE instruction comprising an opcode field identifying said instruction and an information field comprising: 1) a first register field for identifying a first register for indicating an origin and type of an address translation table containing a range of one or more entries to be invalidated, 2) a second register field for identifying a second register for including indices used to select a translation table entry in a type of address translation table indicated by the first register, and an option bit for indicating whether a clear by address space control element (ASCE) operation or an invalidating-and-clearing operation is to be performed, and a range field for identifying a number of additional translation table entries, in the address translation table indicated by the first register, to be invalidated, and 3) a third register field for identifying a third register for indicating an origin and type of address translation table to be used when the clear by address space control element operation is to be performed for only selectively clearing TLB entries; and b) executing the fetched IDTE machine instruction, the executing step comprising: i. determining, from the option bit in the second register, whether a clear by address space control element operation is to be performed; ii. responsive to the option bit indicating that the clear by address space control element operation is to be performed, clearing the TLB, independent of the content of the first register, of those entries in which the address translation table origin of a translation table was used to create the entries in the TLB corresponds to the address translation table origin in the third register; iii. responsive to the option bit indicating that the clear by address space control element operation is not to be performed, invalidating the range of address translation table entries of a translation table identified by the range field, and clearing the TLB entries corresponding to the invalidated entries.

    Clearing specific entries in a buffer
    80.
    发明专利
    Clearing specific entries in a buffer 未知

    公开(公告)号：GB2414842A

    公开(公告)日：2005-12-07

    申请号：GB0518904

    申请日：2004-05-06

    Applicant: IBM

    Inventor： SLEGEL TIMOTHY J ,  HELLER LISA ,  PFEFFER ERWIN ,  PLAMBECK KENNETH

    IPC: G06F9/30 ,  G06F9/38 ,  G06F12/08 ,  G06F12/10

    Abstract: Selected units of storage, such as segments of storage or regions of storage, are invalidated. The invalidation is facilitated by the setting of invalidation indicators located in data structure entries corresponding to the units of storage to be invalidated. Additionally, buffer entries associated with the invalidated units of storage or other chosen units of storage are cleared. An instruction is provided to perform the invalidation and/or clearing. Moreover, buffer entries associated with a particular address space are cleared, without any invalidation. This is also performed by the instruction. The instruction can be implemented in software, hardware, firmware or some combination thereof, or it can be emulated.

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