| 发明名称 | Restoring from a legacy OS environment to a UEFI pre-boot environment | ||
| 摘要 | Restoring from a legacy OS environment to a Unified Extensible Firmware Interface (UEFI) pre-boot environment, including: storing, under the UEFI pre-boot environment, context in the UEFI pre-boot environment that needs to be preserved, where the context in the UEFI pre-boot environment that needs to be preserved includes CPU execution context; restoring a first portion of the CPU execution context in response to the UEFI pre-boot environment failing to load the legacy OS; making a CPU associated with the UEFI pre-boot environment enter into System Management Mode, and restoring a second portion of the CPU execution context under the System Management Mode; and exiting from CPU System Management Mode, thereby returning to the UEFI pre-boot environment. | ||
| 申请公布号 | US9372754(B2) | 申请公布日期 | 2016.06.21 |
| 申请号 | US201514694213 | 申请日期 | 2015.04.23 |
| 申请人 | International Business Machines Corporation | 发明人 | Soderlund Adam L.;Tang Wen Wei;Wu Song Qing |
| 分类号 | G06F11/00;G06F11/14;G06F9/44 | 主分类号 | G06F11/00 |
| 代理机构 | Kennedy Lenart Spraggins LLP | 代理人 | Lenart Edward J.;Cabrasawan Feb;Kennedy Lenart Spraggins LLP |
| 主权项 | 1. A method for restoring from a legacy OS environment to a Unified Extensible Firmware Interface (UEFI) pre-boot environment, comprising: restoring a first portion of a CPU execution context in response to the UEFI pre-boot environment failing to load the legacy OS; and making a CPU associated with the UEFI pre-boot environment enter into System Management Mode, and restoring a second portion of the CPU execution context under the System Management Mode. | ||
| 地址 | Armonk NY US | ||