[SPR] CPU: AMX: Improve the init_fpstate setup code
Bugzilla: https://bugzilla.redhat.com/2122851
When AMX is enabled, this buffer is too small to include AMX TILE_DATA (8KB) as it is statically allocated with about a page. But, the buffer is formatted to have them all although using the compacted format. This also leads to a noisy splat with XRSTORS as it expects all the buffer memory accessible.
The middle 3 commits of this MR are required to address this. The first and last commits are simply tagging along for the ride.
Signed-off-by: Dean Nelson dnelson@redhat.com
Edited by Dean Nelson