On 2025-06-16 09:01, Jan Beulich wrote:
Stop the compiler from inlining non-trivial memset() and memcpy() (for
memset() see e.g. map_vcpu_info() or kimage_load_segments() for
examples). This way we even keep the compiler from using REP STOSQ /
REP MOVSQ when we'd prefer REP STOSB / REP MOVSB (when ERMS is
available).
With gcc10 this yields a modest .text size reduction (release build) of
around 2k.
Unfortunately these options aren't understood by the clang versions I
have readily available for testing with; I'm unaware of equivalents.
Note also that using cc-option-add is not an option here, or at least I
couldn't make things work with it (in case the option was not supported
by the compiler): The embedded comma in the option looks to be getting
in the way.
Requested-by: Andrew Cooper <andrew.coop...@citrix.com>
Signed-off-by: Jan Beulich <jbeul...@suse.com>
Reviewed-by: Jason Andryuk <jason.andr...@amd.com>
