Hi Efraim, can you help me getting the support for transparent huge page on aarch64 for jemalloc into Guix?
https://lists.gnu.org/archive/html/guix-patches/2023-02/msg00698.html I'm using those patches locally and have tested it so far by: - Compiling the whole Rust toolchain - Using this Rust toolchain to compile Icecat and a Rust Linux kernel module for thr GPU I haven't noticed any issues so far. Thanks, Roman. Efraim Flashner <efr...@flashner.co.il> writes: > [[PGP Signed Part:Undecided]] > On Mon, Feb 20, 2023 at 11:31:04AM +0100, Roman Scherer wrote: >> >> Efraim Flashner <efr...@flashner.co.il> writes: >> > >> > I have two patches on the core-updates branch that should allow building >> > openbios-qemu-ppc from aarch64. I'll try cherry-picking them to master >> > and see if that allows building qemu-minimal. >> >> Hi Efraim, >> >> that would be great. I'm looking forward to try them out. > > I ran out of space while building qemu so I'm waiting on the build farm¹ > to see if qemu worked. Since qemu-minimal worked I pushed it upstream > and current master should have that building now. I haven't tested > building an image yet though. > > ¹ https://ci.guix.gnu.org/eval/211772 > >> Since we are already talking about arm64 here, do you have experience >> with transparent huge pages on aarch64? >> >> I would love to get some feedback on this one: >> >> https://lists.gnu.org/archive/html/guix-patches/2023-02/msg00698.html >> >> Do you know if any of the aarch64 build machines configured with a page >> size > 4K? If so, I think that patch could help building more packages >> on that architecture. >> >> Thanks, Roman. > > I'm pretty sure they all use a 4K page size. From > gnu/packages/aux-files/linux-libre/6.1-arm64.conf: > CONFIG_ARM64_4K_PAGES=y > # CONFIG_ARM64_16K_PAGES is not set > # CONFIG_ARM64_64K_PAGES is not set > > It looks like they're set for 4K pages. I'm not sure if it can be set > for more than one size at once. As for the transparent huge pages, I'm > pretty sure back in 2017 when I disabled it in jemalloc it was fairly > broken on aarch64 but I don't see a reason to not enable it now.
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