From 22b613d157a9edc56815d0fa8e55625da0609981 Mon Sep 17 00:00:00 2001
From: Else Someone <else@someonex.net>
Date: Thu, 26 Feb 2026 02:36:23 +0200
Subject: [PATCH] linux-uvm: start adding overrides

...from spectrum and libkrunfw
---
 pkgs/linux-uvm.nix     | 86 ++++++++++++++++++++++++++++++++++++++++++
 profiles/ch-runner.nix |  1 +
 2 files changed, 87 insertions(+)
 create mode 100644 pkgs/linux-uvm.nix

diff --git a/pkgs/linux-uvm.nix b/pkgs/linux-uvm.nix
new file mode 100644
index 0000000..02baab5
--- /dev/null
+++ b/pkgs/linux-uvm.nix
@@ -0,0 +1,86 @@
+{
+  lib,
+  linux_latest,
+}:
+
+let
+  inherit (lib.kernel) yes no unset;
+  inherit (lib) mkForce;
+in
+linux_latest.override {
+  structuredExtraConfig = {
+    BASE_SMALL = yes;
+    DRM_VIRTIO_GPU = yes;
+    EROFS_FS = yes;
+    # TSI = yes;
+    DAX = yes;
+    FS_DAX = yes;
+    FUSE_DAX = yes;
+    OVERLAY_FS = yes;
+    VIRTIO_BALLOON = yes;
+    VIRTIO_BLK = yes;
+    VIRTIO_CONSOLE = yes;
+    VIRTIO_PCI = yes;
+    VIRTIO_MMIO = yes;
+    VIRTIO = yes;
+    VSOCKETS = yes;
+    NO_HZ_IDLE = mkForce yes;
+    NO_HZ_FULL = mkForce unset;
+    HZ_1000 = unset;
+    HZ_250 = yes; # NixOS default: 1000
+
+    EXT4_FS = yes;
+    # EXT4_USE_FOR_EXT2 = yes;
+    XFS_FS = yes;
+    DEFAULT_SECURITY_APPARMOR = mkForce unset;
+
+    XEN = mkForce unset;
+    XEN_BACKEND = mkForce unset;
+    XEN_BALLOON = mkForce unset;
+    XEN_BALLOON_MEMORY_HOTPLUG = mkForce unset;
+    XEN_DOM0 = mkForce unset;
+    XEN_HAVE_PVMMU = mkForce unset;
+    XEN_MCE_LOG = mkForce unset;
+    XEN_PVH = mkForce unset;
+    XEN_SAVE_RESTORE = mkForce unset;
+    XEN_SYS_HYPERVISOR = mkForce unset;
+    PCI_XEN = mkForce unset;
+    POWER_RESET_GPIO = mkForce unset;
+    POWER_RESET_GPIO_RESTART = mkForce unset;
+    RCU_LAZY = mkForce unset;
+    REISERFS_FS_POSIX_ACL = mkForce unset;
+    REISERFS_FS_SECURITY = mkForce unset;
+    REISERFS_FS_XATTR = mkForce unset;
+    SWIOTLB_XEN = mkForce unset;
+    SUSPEND = mkForce unset;
+    PM = mkForce unset;
+    HIBERNATION = mkForce unset;
+    ACPI = mkForce unset;
+    CPU_FREQ = mkForce unset;
+    CPU_FREQ_DT = mkForce unset;
+    INTEL_IDLE = mkForce unset;
+    ISA_DMA_API = mkForce unset;
+    IA32_EMULATION = mkForce unset;
+    COMPAT = mkForce unset;
+    COMPAT_32 = mkForce unset;
+    KVM = mkForce unset;
+    BLOCK_LEGACY_AUTOLOAD = mkForce unset;
+    SWAP = mkForce unset;
+    CMA = mkForce unset;
+    FB = mkForce unset;
+    FB_EFI = mkForce unset;
+    FB_VESA = mkForce unset;
+    SECURITY_APPARMOR = mkForce unset;
+
+    VT = no;
+    DRM_FBDEV_EMULATION = lib.mkForce no;
+    FONTS = mkForce unset;
+    FONT_8x8 = mkForce unset;
+    FONT_TER16x32 = mkForce unset;
+    FRAMEBUFFER_CONSOLE = mkForce unset;
+    FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER = mkForce unset;
+    FRAMEBUFFER_CONSOLE_DETECT_PRIMARY = mkForce unset;
+    FRAMEBUFFER_CONSOLE_ROTATION = mkForce unset;
+    RC_CORE = mkForce unset;
+  };
+}
diff --git a/profiles/ch-runner.nix b/profiles/ch-runner.nix
index 7a2e151..ad3685f 100644
--- a/profiles/ch-runner.nix
+++ b/profiles/ch-runner.nix
@@ -130,6 +130,7 @@ in
   };
   config = lib.mkMerge [
     {
+      # boot.kernelPackages = pkgs.linuxPackagesFor (uvmsPkgs.linux-uvm);
       uvms.cloud-hypervisor.settings = {
         payload = {
           cmdline = lib.concatStringsSep " " cfg.cmdline;