Re: [PR PATCH] [Updated] Enable the option of more than 64 CPUs

[voidlinux-github@inbox.vuxu.org]

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There is an updated pull request by q5sys against master on the void-packages repository

https://github.com/q5sys/void-packages patch-1
https://github.com/void-linux/void-packages/pull/14210

Enable the option of more than 64 CPUs
With enterprise hardware now becoming cheaply available as well as the potential upcoming Threadripper 3 CPU (depending on what AMD does with it), it's getting very easy to surpass the current limit of 64 cpus on void.  A HP DL580 G7 off ebay will run you $500-$1000 and can be configured with 40/80 (cores/threads).  For those wanting even more power a HP DL980 G7 will run you ~$5k, and is 80/160. 
Note: This does not require the MAXSMP flag to be enabled as SMP supports up to 512 CPUs. Also, this is only relevant to x86_64 CPUs, as other architectures supported by Void are not capable of hitting higher values than the default.

A patch file from https://github.com/void-linux/void-packages/pull/14210.patch is attached

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From f870c1bc98d25ee0051cc1d1607c1206bb828979 Mon Sep 17 00:00:00 2001
From: "q5sys (JT)" <jt@obs-sec.com>
Date: Wed, 4 Sep 2019 11:31:32 -0400
Subject: [PATCH] linux5.2: enable the option of more than 64 CPUs

With enterprise hardware now becoming cheaply available as well as the potential upcoming Threadripper 3 CPU (depending on what AMD does with it), it's getting very easy to surpass the current limit of 64 cpus on void.  A HP DL580 G7 off ebay will run you $500-$1000 and can be configured with 40/80 (cores/threads).  For those wanting even more power a HP DL980 G7 will run you ~$5k, and is 80/160.
Note: This does not require the MAXSMP flag to be enabled as SMP supports up to 512 CPUs. Also, this is only relevant to x86_64 CPUs, as other architectures supported by Void are not capable of hitting higher values than the default.
---
 srcpkgs/linux5.2/files/x86_64-dotconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/srcpkgs/linux5.2/files/x86_64-dotconfig b/srcpkgs/linux5.2/files/x86_64-dotconfig
index b9609bb0ca9..a8eca2f5a15 100644
--- a/srcpkgs/linux5.2/files/x86_64-dotconfig
+++ b/srcpkgs/linux5.2/files/x86_64-dotconfig
@@ -355,7 +355,7 @@ CONFIG_CALGARY_IOMMU_ENABLED_BY_DEFAULT=y
 CONFIG_NR_CPUS_RANGE_BEGIN=2
 CONFIG_NR_CPUS_RANGE_END=512
 CONFIG_NR_CPUS_DEFAULT=64
-CONFIG_NR_CPUS=64
+CONFIG_NR_CPUS=256
 CONFIG_SCHED_SMT=y
 CONFIG_SCHED_MC=y
 CONFIG_SCHED_MC_PRIO=y