On 26.10.21 02:54, Stefano Stabellini wrote:
On Mon, 25 Oct 2021, Juergen Gross wrote:On 22.10.21 21:41, Stefano Stabellini wrote:+JuergenOn Fri, 22 Oct 2021, Andrew Cooper wrote:On 22/10/2021 00:08, Stefano Stabellini wrote:+# build depends +RUN apt-get update && \ + apt-get --quiet --yes install \ + build-essential \ + libssl-dev \ + bc \ + curl \ + flex \ + bison \ + libelf-dev \ + && \ + \ + # Build the kernel + curl -fsSLO https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-"$LINUX_VERSION".tar.xz && \ + tar xvJf linux-"$LINUX_VERSION".tar.xz && \ + cd linux-"$LINUX_VERSION" && \ + make defconfig && \ + make xen.config && \ + cp .config .config.orig && \ + cat .config.orig | grep XEN | grep =m |sed 's/=m/=y/g' >> .config && \ + make -j$(nproc) bzImage && \defconfig is huuuuge. Can we use tinyconfig instead? Also, you want to turn off CONFIG_MODULES seeing as you only copy bzImage to the test. This also fixes the fact that `grep XEN` also matches CONFIG_NETXEN_NIC which has nothing to do with Xen.Tinyconfig would be a good idea but it crashes on QEMU with the appended boot log. I did: # make tinyconfig # make xen.config # make bzImage Of course we could have our own tailored special kernel config for this kernel but I like the simplicify of "make tinyconfig" or "make defconfig" followed by "make xen.config". Unless you know one kconfig option or two that we need to add to tinyconfig to make it work my preference is to go with defconfig for now.You will need to add the dom0 and SMP related config options at least. I'll have a look at config.xen, which is a little bit weird: it configures the backends, but not dom0.Thanks, it would be good if make tinyconfig && make xen.config would just work on QEMU. In the meantime I'll keep defconfig for this test, we can always improve later.
Can you please test the attached patch? Juergen
From 8ffe2d58a3507dfd42996a38f0de66c1e7ca2c6a Mon Sep 17 00:00:00 2001 From: Juergen Gross <jgr...@suse.com> Date: Wed, 27 Oct 2021 09:05:28 +0200 Subject: [PATCH] x86/xen: update xen.config Update some entries in xen.config: - add ACPI as being required for running as dom0 - add SMP for convenience - remove HIGHMEM64G as this option no longer exists - remove XEN_MAX_DOMAIN_MEMORY as this option no longer exists Signed-off-by: Juergen Gross <jgr...@suse.com> --- arch/x86/configs/xen.config | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/arch/x86/configs/xen.config b/arch/x86/configs/xen.config index d9fc7139fd46..e59fdb0f6b67 100644 --- a/arch/x86/configs/xen.config +++ b/arch/x86/configs/xen.config @@ -1,6 +1,4 @@ # global x86 required specific stuff -# On 32-bit HIGHMEM4G is not allowed -CONFIG_HIGHMEM64G=y CONFIG_64BIT=y # These enable us to allow some of the @@ -9,12 +7,13 @@ CONFIG_HYPERVISOR_GUEST=y CONFIG_PCI=y CONFIG_PCI_MSI=y CONFIG_X86_MCE=y +CONFIG_ACPI=y CONFIG_ACPI_PROCESSOR=y CONFIG_CPU_FREQ=y +CONFIG_SMP=y # x86 xen specific config options CONFIG_XEN_PVH=y -CONFIG_XEN_MAX_DOMAIN_MEMORY=500 CONFIG_XEN_SAVE_RESTORE=y # CONFIG_XEN_DEBUG_FS is not set CONFIG_XEN_MCE_LOG=y -- 2.26.2
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