Re: [Xen-devel] [PATCH] x86/boot: Improve code generation from bootsym()

[Jan Beulich <jbeulich@xxxxxxxx>]

On 09.09.2019 12:43, Andrew Cooper wrote:
> The code generation for bootsym() is atrocious, and unnecesserily
> complicated.  Given the appropriate physical address, all we need is to
> construct a virtual address of the appropriate type.
> 
>   add/remove: 0/0 grow/shrink: 0/9 up/down: 0/-4256 (-4256)
>   Function                                     old     new   delta
>   kexec_reserve_area.constprop                 165     159      -6
>   reset_videomode_after_s3                     231      70    -161
>   identify_cpu                                1341    1176    -165
>   parse_acpi_sleep                             408     240    -168
>   early_init_intel                             632     440    -192
>   __cpu_up                                    1983    1682    -301
>   do_platform_op                              6469    5526    -943
>   compat_platform_op                          6433    5482    -951
>   __start_xen                                12939   11570   -1369
>   Total: Before=3341298, After=3337042, chg -0.13%
> 
> No functional change.
> 
> Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

Acked-by: Jan Beulich <jbeulich@xxxxxxxx>

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxxx
https://lists.xenproject.org/mailman/listinfo/xen-devel