Messages in this thread | | | From | Ard Biesheuvel <> | Date | Thu, 28 Jun 2018 10:34:54 +0200 | Subject | Re: [PATCH 5/5] x86/kernel: jump_table: use relative references |
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On 28 June 2018 at 10:31, Peter Zijlstra <peterz@infradead.org> wrote: > 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
Thanks for the head's up. Fortunately, it does not conflict fundamentally, so it should be a straight-forward rebase after that code is merged.
Do you think this is likely to get merged for v4.19?
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