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kdump.sysconfig.s390: Remove "prot_virt" from kdump kernel cmdline

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Resolves: bz1979879
Upstream: Fedora
Conflict: None

commit 914a856c66
Author: Philipp Rudo <prudo@redhat.com>
Date:   Fri Jul 16 10:34:35 2021 +0200

    kdump.sysconfig.s390: Remove "prot_virt" from kdump kernel cmdline

    "prot_virt" enables the kernel to run Secure Execution virtual machines
    on s390. These virtual machines are isolated from the hypervisor and
    thus protected against tampering by a malicious host. Enabling
    "prot_virt" requires a minimum of ~2.5GB memory which exceeds what is
    typically reserved for the crashkernel. Thus remove "prot_virt" from the
    command line for the 2nd kernel to prevent it to run out-of-memory.

    For more discussions about this, see:
    https://lists.fedoraproject.org/archives/list/kexec@lists.fedoraproject.org/thread/QSRRNV4ALKXUJC2VM3US4Z2NSQRHVMXB/

    Signed-off-by: Philipp Rudo <prudo@redhat.com>
    Acked-by: Baoquan He <bhe@redhat.com>

Signed-off-by: Philipp Rudo <prudo@redhat.com>
This commit is contained in:
Philipp Rudo 2021-07-20 17:27:12 +02:00
parent b84de553b4
commit 3f28dc72a2
1 changed files with 1 additions and 1 deletions
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2
kdump.sysconfig.s390x
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@ -17,7 +17,7 @@ KDUMP_COMMANDLINE=""
# This variable lets us remove arguments from the current kdump commandline
# as taken from either KDUMP_COMMANDLINE above, or from /proc/cmdline
# NOTE: some arguments such as crashkernel will always be removed
KDUMP_COMMANDLINE_REMOVE="hugepages hugepagesz slub_debug quiet log_buf_len swiotlb vmcp_cma cma hugetlb_cma"
KDUMP_COMMANDLINE_REMOVE="hugepages hugepagesz slub_debug quiet log_buf_len swiotlb vmcp_cma cma hugetlb_cma prot_virt"
# This variable lets us append arguments to the current kdump commandline
# after processed by KDUMP_COMMANDLINE_REMOVE