Hi all, On Sun, Oct 04, 2026 at 10:47:17PM +0200, Bernhard Schmidt wrote: > On 04/10/26 02:16 PM, Bernhard Schmidt wrote: > > Hi, > > > What I don't get though, I followed Salvatore's instructions from a stock > > Debian kernel which say > > > > cp /boot/config-$(uname -r) .config > > yes '' | make localmodconfig > > make savedefconfig > > mv defconfig arch/x86/configs/my_defconfig > > > > so all settings should be the same. But as I wrote before, the kernel sizes > > are wildly different, so possibly something went wrong here. > > > > -rw-r--r-- 1 root root 283542 Oct 3 15:02 config-6.12+unreleased-amd64 > > -rw-r--r-- 1 root root 171116 Oct 2 01:00 config-6.12.107 > > -rw-r--r-- 1 root root 283337 Aug 29 06:19 config-6.12.107+deb13-amd64 > > -rw-r--r-- 1 root root 171310 Oct 2 01:05 config-6.12.111 > > -rw-r--r-- 1 root root 283542 Sep 28 14:18 config-6.12.111+deb13-amd64 > > > > root@nm3:/boot# grep CONFIG_INTEL_IOMMU_DEFAULT_ON config-6.12* > > config-6.12+unreleased-amd64:# CONFIG_INTEL_IOMMU_DEFAULT_ON is not set > > config-6.12+unreleased-amd64:CONFIG_INTEL_IOMMU_DEFAULT_ON_INTGPU_OFF=y > > config-6.12.107:# CONFIG_INTEL_IOMMU_DEFAULT_ON is not set > > config-6.12.107+deb13-amd64:# CONFIG_INTEL_IOMMU_DEFAULT_ON is not set > > config-6.12.107+deb13-amd64:CONFIG_INTEL_IOMMU_DEFAULT_ON_INTGPU_OFF=y > > config-6.12.111:# CONFIG_INTEL_IOMMU_DEFAULT_ON is not set > > config-6.12.111+deb13-amd64:# CONFIG_INTEL_IOMMU_DEFAULT_ON is not set > > config-6.12.111+deb13-amd64:CONFIG_INTEL_IOMMU_DEFAULT_ON_INTGPU_OFF=y > > > > That setting is not set for both my kernels, the trixie kernels and the one > > Salvatore sent out yesterday. So maybe it's enabled somewhere else in Debian > > (a kernel patch)? > > > > Anyway, I booted "my" .111 with intel_iommu=on now and it shows the "Adding > > to iommu group" messages, so it should crash now. > > Nope :-( > > That kernel (built straight from the linux-stable tree) does not crash, > even with IOMMU enabled. At least for the last 8 hours. > > So although I copied over the config as instructed the 6.12.111-stable > tree behaves differently, has a wildly different size of the .config and > the binaries, and does not crash.
So this mgiht now be the same as in meanwhile reported upstream, https://lore.kernel.org/stable/20261004122616.56714cbd@nargothrond/ Regards, Salvatore
