In kernel code, if movable_node specified, it will skip the mirror
feature. So we should also skip mirror feature in kaslr.
Cc: linux-doc@vger.kernel.org
Cc: Jonathan Corbet <cor...@lwn.net>
Cc: Randy Dunlap <rdun...@infradead.org>
Signed-off-by: Chao Fan <fanc.f...@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 fe49d6e79c50..203bec3d400d 100644
--- a/arch/x86/boot/compressed/kaslr.c
+++ b/arch/x86/boot/compressed/kaslr.c
@@ -714,6 +714,7 @@ 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;
@@ -747,6 +748,12 @@ process_efi_entries(unsigned long minimum, unsigned long
image_size)
}
}
+#ifdef CONFIG_MEMORY_HOTPLUG
+ /* Skip memory mirror if movabale_node or immovable_mem specified */
+ 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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