Currently, default value is 64, so qemu is limited to 64 hotplug dimm original patch from 2015 https://patchwork.kernel.org/project/kvm/patch/[email protected]/
We have discusted about this in 2016 (At this time some optimisations patches were missing) https://lists.proxmox.com/pipermail/pve-devel/2016-December/024502.html Also, this fix this bugzilla https://bugzilla.proxmox.com/show_bug.cgi?id=1426 Wolfgang proposed to have explicit dimm module management, it could be great, but for now this patch is fixed the current implemlentation. Signed-off-by: Alexandre Derumier <[email protected]> --- ...08-vhost-bump-max_mem_regions-to-509.patch | 32 +++++++++++++++++++ submodules/ubuntu-focal | 2 +- 2 files changed, 33 insertions(+), 1 deletion(-) create mode 100644 patches/kernel/0008-vhost-bump-max_mem_regions-to-509.patch diff --git a/patches/kernel/0008-vhost-bump-max_mem_regions-to-509.patch b/patches/kernel/0008-vhost-bump-max_mem_regions-to-509.patch new file mode 100644 index 0000000..f547b7d --- /dev/null +++ b/patches/kernel/0008-vhost-bump-max_mem_regions-to-509.patch @@ -0,0 +1,32 @@ +From 721ac248403a4c7ea98c416fc28f22c0bfbbb63d Mon Sep 17 00:00:00 2001 +From: Alexandre Derumier <[email protected]> +Date: Sun, 15 Nov 2020 19:19:28 +0100 +Subject: [PATCH] vhost: bump max_mem_regions to 509 + +Currently, default value is 64, so qemu is limited to 64 hotplug dimm + +Signed-off-by: Alexandre Derumier <[email protected]> +--- + drivers/vhost/vhost.c | 4 ++-- + 1 file changed, 2 insertions(+), 2 deletions(-) + +diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c +index 36ca2cf419bf..1d3eae6555fa 100644 +--- a/drivers/vhost/vhost.c ++++ b/drivers/vhost/vhost.c +@@ -33,10 +33,10 @@ + + #include "vhost.h" + +-static ushort max_mem_regions = 64; ++static ushort max_mem_regions = 509; + module_param(max_mem_regions, ushort, 0444); + MODULE_PARM_DESC(max_mem_regions, +- "Maximum number of memory regions in memory map. (default: 64)"); ++ "Maximum number of memory regions in memory map. (default: 509)"); + static int max_iotlb_entries = 2048; + module_param(max_iotlb_entries, int, 0444); + MODULE_PARM_DESC(max_iotlb_entries, +-- +2.20.1 + diff --git a/submodules/ubuntu-focal b/submodules/ubuntu-focal index fd386a6..721ac24 160000 --- a/submodules/ubuntu-focal +++ b/submodules/ubuntu-focal @@ -1 +1 @@ -Subproject commit fd386a64a1ed3f2f047318508ebd733f56a4fab2 +Subproject commit 721ac248403a4c7ea98c416fc28f22c0bfbbb63d -- 2.20.1 _______________________________________________ pve-devel mailing list [email protected] https://lists.proxmox.com/cgi-bin/mailman/listinfo/pve-devel
