Re: [PATCH] x86/domctl: Reorder user_regs accesses for efficiency
Jan Beulich <[email protected]>
| Newsgroups | org.xenproject.lists.xen-devel |
|---|---|
| Message-ID | <[email protected]> |
On 20.07.2026 11:22, Andrew Cooper wrote: > The current order is derived from expanding XLAT_cpu_user_regs() which uses > the x86_32 cpu_user_regs order. This is correct for one the blocks, but not > the others. > > In order to work with the prefetcher, rather than against it, loads want to be > in field order. Make this so for the three paths reading an x86_64 > cpu_user_regs. > > No functional change. > > Reported-by: Jan Beulich <[email protected]> > Signed-off-by: Andrew Cooper <[email protected]> Reviewed-by: Jan Beulich <[email protected]>