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authorHeiko Carstens <hca@linux.ibm.com>2020-09-07 17:20:05 +0200
committerVasily Gorbik <gor@linux.ibm.com>2020-09-14 11:38:34 +0200
commitda1694ad9e8d13484c8b4ecaabde0bd7b958442a (patch)
treebd504d95a0fa035b362274044c6a0f1441b593d0 /tools
parent36c2733c439caa424fe2b7dded870913dcb868ac (diff)
s390/mm,ptdump: hold cpa mutex while walking for kernel page table dump
This is currently only preventing that outdated information is provided to user space. A concurrent split of huge/large pages does modify the kernel page tables, however either the huge/large mapping is reported or the split area is being walked. This "fixes" also only a potential future bug, since split pages could also be merged again if page permissions are the same for larger memory areas. Reviewed-by: Vasily Gorbik <gor@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Diffstat (limited to 'tools')
0 files changed, 0 insertions, 0 deletions