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    METHOD AND APPARATUS FOR ACCESSING PHYSICAL RESOURCES
    1.
    发明公开
    METHOD AND APPARATUS FOR ACCESSING PHYSICAL RESOURCES 审中-公开
    方法和设备访问物理资源

    公开(公告)号：EP3070604A4

    公开(公告)日：2017-03-29

    申请号：EP14863242

    申请日：2014-11-13

    申请人： HUAWEI TECH CO LTD

    发明人： ZHENG CHEN ,  FU LONG ,  ZHAN JIANFENG ,  ZHANG LIXIN

    IPC分类号： G06F9/455 ,  G06F12/14

    CPC分类号： G06F12/1458 ,  G06F9/4411 ,  G06F9/4555 ,  G06F21/00 ,  G06F21/572 ,  G06F21/62 ,  G06F21/78 ,  G06F2009/45583 ,  G06F2212/1052 ,  G06F2221/2141

    摘要： The present invention relates to the field of operating system technologies, and discloses a method and an apparatus for accessing physical resources, to restrict access to physical resources of other Light OSs by a light system kernel Light OS in a multi-kernel operating system and ensure security of accessing physical resources among the Light OSs. The method includes: receiving, by secure firmware, a physical address corresponding to a physical resource to be accessed by a first Light OS; determining, by the secure firmware, whether the physical address corresponding to the physical resource to be accessed by the first Light OS is out of bounds; and if the access of the first Light OS is within bounds, sending an access continuity signal to the first Light OS; or if the access of the first Light OS is out of bounds, sending an access error signal to the first Light OS.

    METHOD AND DEVICE FOR DETERMINING PHYSICAL ADDRESS
    2.
    发明公开
    METHOD AND DEVICE FOR DETERMINING PHYSICAL ADDRESS 审中-公开
    方法和设备，用来确定物理地址

    公开(公告)号：EP3007071A4

    公开(公告)日：2016-04-13

    申请号：EP13885481

    申请日：2013-12-02

    申请人： HUAWEI TECH CO LTD

    发明人： ZHANG LIXIN ,  ZHANG KE ,  ZHANG YI ,  ZHANG LELE

    IPC分类号： G06F12/10

    CPC分类号： G06F12/1027 ,  G06F2212/681 ,  Y02D10/13

    摘要： The present invention discloses a method and an apparatus for determining a physical address, which relate to the field of computer technologies, may use a set associative TLB that supports multiple page sizes to obtain the physical address, and reduce power consumption. According to the present disclosure, a page size is obtained according to the higher-order N bits of a linear address, where N is greater than 0 and less than a quantity of bits of the linear address; an index number of a translation lookaside buffer TLB is obtained according to the page size; a mask is obtained according to the page size and a supported minimum page size; a label of the TLB is obtained according to the mask; the higher-order MAC1 bits of a physical address corresponding to the linear address are obtained by searching the TLB-according to the index number and the label; and the physical address is obtained according to the mask, the supported minimum page, and the higher-order MAC1 bits of the physical address. It is appropriate to use the present disclosure when a physical address is determined by using a linear address.

    DATA CACHING METHOD, CACHE AND COMPUTER SYSTEM
    3.
    发明公开
    DATA CACHING METHOD, CACHE AND COMPUTER SYSTEM 有权
    DATENZWISCHENSPEICHERUNGSVERFAHREN，ZWISCHENSPEICHER UND COMPUTERSYSTEM

    公开(公告)号：EP3121703A4

    公开(公告)日：2017-05-17

    申请号：EP15789250

    申请日：2015-05-07

    申请人： HUAWEI TECH CO LTD

    发明人： WEI WEI ,  ZHANG LIXIN ,  XIONG JIN ,  JIANG DEJUN

    IPC分类号： G06F3/06 ,  G06F12/08

    CPC分类号： G06F12/0868 ,  G06F3/061 ,  G06F3/0619 ,  G06F3/0631 ,  G06F3/065 ,  G06F3/068 ,  G06F3/0685 ,  G06F12/08 ,  G06F12/122 ,  G06F12/128 ,  G06F2212/604

    摘要： A data caching method, a cache, and a computer system are provided. In the method, when a miss of an access request occurs and a cache needs to determine a to-be-replaced cache line, not only a historical access frequency of the cache line but also a type of a memory corresponding to the cache line needs to be considered. Therefore, a cache line corresponding to a DRAM type may be preferably replaced, which reduces a caching amount in the cache for data stored in a DRAM. The cache can increase a caching amount for data stored in an NVM, and for an access request for the data stored in the NVM, corresponding data can be found in the cache whenever possible, thereby reducing cases of reading data from the NVM, reducing a delay in reading data from the NVM, and effectively improving access efficiency.

    摘要翻译： 数据缓存方法，缓存和计算机系统被提供。 在该方法中，当发生访问请求的遗漏并且高速缓存需要确定将被更换的高速缓存行时，不仅高速缓存行的历史访问频率而且高速缓存行对应的存储器的类型都需要 要考虑。 因此，可以优选地替换与DRAM类型相对应的高速缓存行，这降低了存储在DRAM中的数据在高速缓存中的高速缓存量。 高速缓存可以增加NVM中存储的数据的高速缓存量，并且对于存储在NVM中的数据的访问请求，只要可能就可以在高速缓存中找到相应的数据，由此减少了从NVM读取数据的情况，减少了 延迟从NVM读取数据，并有效提高访问效率。

    METHOD, DEVICE, AND SYSTEM FOR MEMORY MANAGEMENT
    9.
    发明公开
    METHOD, DEVICE, AND SYSTEM FOR MEMORY MANAGEMENT 审中-公开
    用于存储器管理的方法，装置和系统

    公开(公告)号：EP2998862A4

    公开(公告)日：2016-04-20

    申请号：EP13884645

    申请日：2013-11-28

    申请人： HUAWEI TECH CO LTD

    发明人： ZHANG LIXIN ,  HOU RUI ,  ZHANG KE ,  JIANG TAO

    IPC分类号： G06F9/45 ,  G06F9/50

    CPC分类号： G06F3/0604 ,  G06F3/0629 ,  G06F3/067 ,  G06F9/5016

    摘要： Provided are a memory management method, apparatus, and system, which can easily implement sharing of a memory resource. The method includes: sending, by a requesting node, first indication information, where the first indication information is used for indicating a length of memory required by the requesting node; receiving, by the requesting node, second indication information, where the second indication information is used for indicating first remote memory provided to the requesting node by a target contributing node in at least one contributing node that can provide remote memory; determining, by the requesting node from available virtual addresses, a first virtual address corresponding to the first remote memory; and when first data whose pointer is within a range of the first virtual address needs to be read/written, sending, by the requesting node, a first data read/write instruction for the first data, where the first data read/write instruction includes third indication information, and the third indication information is used for indicating storage space, for storing the first data, in the first remote memory.

    CROSS-PAGE PREFETCHING METHOD, DEVICE AND SYSTEM
    10.
    发明公开
    CROSS-PAGE PREFETCHING METHOD, DEVICE AND SYSTEM 审中-公开
    侧的边界预取方法以及设备和系统

    公开(公告)号：EP2993586A4

    公开(公告)日：2016-04-06

    申请号：EP14791035

    申请日：2014-04-17

    申请人： HUAWEI TECH CO LTD

    发明人： ZHANG LIXIN ,  ZHANG LIUHANG ,  HOU RUI ,  ZHANG KE

    IPC分类号： G06F12/08

    CPC分类号： G06F12/0862 ,  G06F2212/1016 ,  G06F2212/1021 ,  G06F2212/602 ,  G06F2212/6026 ,  G06F2212/608

    摘要： Embodiments of the present invention provide a cross-page prefetching method, apparatus, and system, which can improve a prefetching hit ratio of a prefetching device, and further improve efficiency of memory access. The method includes: receiving an indication message, sent by a cache, that a physical address is missing, where the indication message carries a mapped-to first physical address and contiguity information of a first physical page to which the first physical address belongs; acquiring a prefetching address according to the first physical address and a step size that is stored in a prefetching device; and if a page number of a physical page to which the prefetching address belongs is different from a page number of the first physical page, and it is determined, according to the contiguity information of the first physical page, that the first physical page is contiguous, prefetching data at the prefetching address.