Re: [Xen-devel] [PATCH v2 5/5] x86/boot: Drop sym_fs()

2020-01-20 Thread Jan Beulich
On 17.01.2020 21:42, Andrew Cooper wrote: > All remaining users of sym_fs() can trivially be switched to using sym_esi() > instead. This is shorter to encode and faster to execute. > > This removes the final uses of %fs during boot, which allows us to drop > BOOT_FS from the trampoline GDT, which

[Xen-devel] [PATCH v2 5/5] x86/boot: Drop sym_fs()

2020-01-17 Thread Andrew Cooper
All remaining users of sym_fs() can trivially be switched to using sym_esi() instead. This is shorter to encode and faster to execute. This removes the final uses of %fs during boot, which allows us to drop BOOT_FS from the trampoline GDT, which drops an 16M arbitrary limit on Xen's compiled size