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crashkernel: optimize arm64 reserved size if PAGE_SIZE=4k

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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>
This commit is contained in:
Pingfan Liu 2022-06-13 10:25:26 +08:00 committed by Coiby Xu
parent c5bdd2d8f1
commit b92bc6e0a7
1 changed files with 2 additions and 1 deletions
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3
kdump-lib.sh
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@ -884,7 +884,8 @@ 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"