From e2ab6321ed156e0bc9479c118c80db691bff935a Mon Sep 17 00:00:00 2001
From: Artturin <Artturin@artturin.com>
Date: Sat, 20 Nov 2021 20:34:06 +0200
Subject: [PATCH] vmTools: set msize to 128KiB

500KiB was causing issues https://github.com/NixOS/nixpkgs/pull/142577
---
 pkgs/build-support/vm/default.nix | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/pkgs/build-support/vm/default.nix b/pkgs/build-support/vm/default.nix
index a0f3b5efbaeb..e403b27d9690 100644
--- a/pkgs/build-support/vm/default.nix
+++ b/pkgs/build-support/vm/default.nix
@@ -1177,6 +1177,7 @@ rec {
   # The default 9P msize value is 8 KiB, which according to QEMU is
   # insufficient and would degrade performance.
   # See: https://wiki.qemu.org/Documentation/9psetup#msize
-  # Use 500 KiB as a conservative default, see also https://github.com/NixOS/nixpkgs/pull/142577#issuecomment-953848731
-  default9PMsizeBytes = 512000;
+  # Use 128KiB which is the default in linux 5.15+
+  # https://github.com/torvalds/linux/commit/9c4d94dc9a64426d2fa0255097a3a84f6ff2eebe
+  default9PMsizeBytes = 128 * 1024;
 }