This is mail thread we haved discussed about ARM to compliance for PCI standard as other platform for x86, powerpc, ia64 etc. They key point form Huawei guys are below:
"这部分ARM应该不能遵循，因为VGA EN开辟的空间是给legacy的系统使用的，1M以下的空间划分是x86向前兼容性的做法，只有在CSM支持传统的系统才还这样做，在新的方案里能不用就不用，开辟IO空间对ARM来说更不合适，因为ARM在定义之初就没有IO这种资源类型。" Translate: ARM would compliance this part of PCI stand (IO space, memory address space), because VGA EN reserved spaces for only for legacy system. The low space for 1M is to compatible X86, it only used from CSM. In new implement, it need to avoid at best, to use IO space is also not suitable for ARM because ARM didn't have any IO resource in its' initial definitions. thanks, Mao -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1691991 Title: Xorg Segmentation fault on Hisilicon D05 board (arm64) Status in xorg package in Ubuntu: New Bug description: ubuntu@ubuntu:~$ sudo /usr/lib/xorg/Xorg [sudo] password for ubuntu: X.Org X Server 1.18.4 Release Date: 2016-07-19 X Protocol Version 11, Revision 0 Build Operating System: Linux 4.4.0-45-generic aarch64 Ubuntu Current Operating System: Linux ubuntu 4.10.0-20.22-generic #22+pearl.2-Ubuntu SMP Thu Apr 27 20:23:08 UTC 2017 aarch64 Kernel command line: BOOT_IMAGE=/boot/vmlinuz-4.10.0-20.22-generic root=UUID=eee681c5-04ce-4cd0-a004-cae6717961ce ro debug earlycon=pl011,mmio,0x602B0000 console=tty0 Build Date: 02 November 2016 10:05:28PM xorg-server 2:1.18.4-0ubuntu0.2 (For technical support please see http://www.ubuntu.com/support) Current version of pixman: 0.33.6 Before reporting problems, check http://wiki.x.org to make sure that you have the latest version. Markers: (--) probed, (**) from config file, (==) default setting, (++) from command line, (!!) notice, (II) informational, (WW) warning, (EE) error, (NI) not implemented, (??) unknown. (==) Log file: "/var/log/Xorg.0.log", Time: Fri May 19 18:10:13 2017 (==) Using system config directory "/usr/share/X11/xorg.conf.d" pci id for fd 10: 19e5:1711, driver (null) EGL_MESA_drm_image required. (EE) (EE) Backtrace: (EE) 0: /usr/lib/xorg/Xorg (xorg_backtrace+0x58) [0xaaaad7f1cc48] (EE) (EE) Segmentation fault at address 0xa0 (EE) Fatal server error: (EE) Caught signal 11 (Segmentation fault). Server aborting (EE) (EE) Please consult the The X.Org Foundation support at http://wiki.x.org for help. (EE) Please also check the log file at "/var/log/Xorg.0.log" for additional information. (EE) (EE) Server terminated with error (1). Closing log file. Aborted (core dumped) ubuntu@ubuntu:~$ To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1691991/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
