Messages in this thread | | | Subject | Re: [PATCH v6 1/5] kaslr: add kaslr_mem=nn[KMG]@ss[KMG] to specify extracting memory | From | Randy Dunlap <> | Date | Mon, 15 Jan 2018 14:40:35 -0800 |
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On 01/15/2018 04:40 AM, Chao Fan wrote: > In current code, kaslr only has a method to avoid some memory regions, > but no method to specify the regions for kaslr to extract. So kaslr > may choose the wrong position sometimes, which will cause some other > features fail. > > Here is a problem that kaslr may choose the memory region in movable > nodes to extract kernel, which will make the nodes can't be hot-removed. > To solve it, we can specify the memory region in immovable node. > Create "kaslr_mem=" to store the regions in immovable nodes, where should > be chosen by kaslr. > > Also change the "handle_mem_memmap" to "handle_mem_filter", since > it will not only handle memmap parameter now.
Hi,
Are any of the kernel command-line parameters documented anywhere?
Thanks.
> Multiple regions can be specified, comma delimited. > Considering the usage of memory, only support for 4 regions. > 4 regions contains 2 nodes at least, enough for kernel to extract. > > Signed-off-by: Chao Fan <fanc.fnst@cn.fujitsu.com> > --- > arch/x86/boot/compressed/kaslr.c | 73 ++++++++++++++++++++++++++++++++++++++-- > 1 file changed, 70 insertions(+), 3 deletions(-)
-- ~Randy
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