Re: [Xen-devel] [PATCH v4] xen: fix handling framebuffer located above 4GB

2019-05-16 Thread Jan Beulich
>>> On 16.05.19 at 17:46, wrote: > On some machines (for example Thinkpad P52), UEFI GOP reports > framebuffer located above 4GB (0x40 on that machine). This > address does not fit in {xen,dom0}_vga_console_info.u.vesa_lfb.lfb_base > field, which is 32bit. The overflow here cause all kind

[Xen-devel] [PATCH v4] xen: fix handling framebuffer located above 4GB

2019-05-16 Thread Marek Marczykowski-Górecki
On some machines (for example Thinkpad P52), UEFI GOP reports framebuffer located above 4GB (0x40 on that machine). This address does not fit in {xen,dom0}_vga_console_info.u.vesa_lfb.lfb_base field, which is 32bit. The overflow here cause all kind of memory corruption when anything tries