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crashkernel: optimize arm64 reserved size if PAGE_SIZE=4k 

Resolves: bz2041729
Upstream: Fedora
Conflict: None

commit b92bc6e0a775255e545506cedfa6946a1a104eff
Author: Pingfan Liu <piliu@redhat.com>
Date:   Mon Jun 13 10:25:26 2022 +0800

    crashkernel: optimize arm64 reserved size if PAGE_SIZE=4k

    On RHEL9 and Fedora, the arm64 platform only supports 4KB page size.
    the reserved memory size can be aligned to that on x86_64.

    Introducing a new formula for 4KB on arm64, which bases on x86_64 plus
    extra 64MB.

    Signed-off-by: Pingfan Liu <piliu@redhat.com>
    Acked-by: Baoquan He <bhe@redhat.com>

Signed-off-by: Pingfan Liu <piliu@redhat.com>
This commit is contained in:
Pingfan Liu 2022-06-15 09:56:22 +08:00 committed by Tao Liu
parent c931d1ba8e
commit a3181169cd
1 changed files with 2 additions and 1 deletions
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3
kdump-lib.sh
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@ -850,7 +850,8 @@ kdump_get_arch_recommend_crashkernel()
if [[ $_arch == "x86_64" ]] || [[ $_arch == "s390x" ]]; then
_ck_cmdline="1G-4G:192M,4G-64G:256M,64G-:512M"
elif [[ $_arch == "aarch64" ]]; then
_ck_cmdline="2G-:448M"
# For 4KB page size, the formula is based on x86 plus extra = 64M
_ck_cmdline="1G-4G:256M,4G-64G:320M,64G-:576M"
elif [[ $_arch == "ppc64le" ]]; then
if [[ $_dump_mode == "fadump" ]]; then
_ck_cmdline="4G-16G:768M,16G-64G:1G,64G-128G:2G,128G-1T:4G,1T-2T:6G,2T-4T:12G,4T-8T:20G,8T-16T:36G,16T-32T:64G,32T-64T:128G,64T-:180G"