Hi, Laszlo: Thanks for your reply! Is Using PcdUse5LevelPageTable also a method to reduce paging table's memory requirement?
I find PcdUse1GPageTable's default value is false, why? PcdUse5LevelPageTable's default value is true, and DxeIpl module will create 5-level paging for Dxe's long mode? Best wishes, -----邮件原件----- 发件人: Laszlo Ersek <ler...@redhat.com> 发送时间: 2019年9月17日 20:07 收件人: devel@edk2.groups.io; Tiger Liu(BJ-RD) <tiger...@zhaoxin.com> 主题: Re: [edk2-devel] [edk2] DxeIpl : create page table, occupied too much memory range On 09/17/19 13:08, Tiger Liu(BJ-RD) wrote: > Hi, Expert: > I have a question about creating page table. > If a CPU support 48bit physical address line, then creating page tables(Page > size=2MB) will occupy too much memory region. > > Now, developer could only use PcdUse1GPageTable to avoid occupy too much > memory region? Not only. See <https://bugzilla.tianocore.org/show_bug.cgi?id=2008>. Thanks Laszlo 保密声明： 本邮件含有保密或专有信息，仅供指定收件人使用。严禁对本邮件或其内容做任何未经授权的查阅、使用、复制或转发。 CONFIDENTIAL NOTE: This email contains confidential or legally privileged information and is for the sole use of its intended recipient. Any unauthorized review, use, copying or forwarding of this email or the content of this email is strictly prohibited. -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#47477): https://edk2.groups.io/g/devel/message/47477 Mute This Topic: https://groups.io/mt/34186465/21656 Group Owner: devel+ow...@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
