Messages in this thread | | | Date | Thu, 28 Jun 2018 10:31:07 +0200 | From | Peter Zijlstra <> | Subject | Re: [PATCH 5/5] x86/kernel: jump_table: use relative references |
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On Wed, Jun 27, 2018 at 06:06:04PM +0200, Ard Biesheuvel wrote: > Similar to the arm64 case, 64-bit x86 can benefit from using 32-bit > relative references rather than 64-bit absolute ones when emitting > struct jump_entry instances. Not only does this reduce the memory > footprint of the entries themselves by 50%, it also removes the need > for carrying relocation metadata on relocatable builds (i.e., for KASLR) > which saves a fair chunk of .init space as well (although the savings > are not as dramatic as on arm64)
This will conflict with:
https://lkml.kernel.org/r/20180622172212.199633-10-namit@vmware.com
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