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    SubjectRe: [PATCH v7 4/5] x86/KASLR: Skip memory mirror handling if movable_node specified
    On 01/17/18 at 06:53pm, Chao Fan wrote:
    > In kernel code, if movable_node specified, it will skip the mirror
    > feature. So we should also skip mirror feature in KASLR.
    >
    > Signed-off-by: Chao Fan <fanc.fnst@cn.fujitsu.com>
    > ---
    > arch/x86/boot/compressed/kaslr.c | 7 +++++++
    > 1 file changed, 7 insertions(+)
    >
    > diff --git a/arch/x86/boot/compressed/kaslr.c b/arch/x86/boot/compressed/kaslr.c
    > index dca846b522fc..84b9db26d026 100644
    > --- a/arch/x86/boot/compressed/kaslr.c
    > +++ b/arch/x86/boot/compressed/kaslr.c
    > @@ -692,6 +692,7 @@ static bool
    > process_efi_entries(unsigned long minimum, unsigned long image_size)
    > {
    > struct efi_info *e = &boot_params->efi_info;
    > + char *args = (char *)get_cmd_line_ptr();
    > bool efi_mirror_found = false;
    > struct mem_vector region;
    > efi_memory_desc_t *md;
    > @@ -725,6 +726,12 @@ process_efi_entries(unsigned long minimum, unsigned long image_size)
    > }
    > }
    >
    > +#ifdef CONFIG_MEMORY_HOTPLUG
    > + /* Skip memory mirror if movabale_node or immovable_mem specified */
    ~~~~~~~~~~~~~
    ^^ need be removed?
    > + if (strstr(args, "movable_node"))
    > + efi_mirror_found = false;
    > +#endif
    > +
    > for (i = 0; i < nr_desc; i++) {
    > md = efi_early_memdesc_ptr(pmap, e->efi_memdesc_size, i);
    >
    > --
    > 2.14.3
    >
    >
    >

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