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Subject[PATCH v6 3/5] kaslr: disable memory mirror feature when movable_node
Date
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 38816d3f8865..5615f26364f9 100644
--- a/arch/x86/boot/compressed/kaslr.c
+++ b/arch/x86/boot/compressed/kaslr.c
@@ -646,6 +646,7 @@ 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;
@@ -679,6 +680,12 @@ 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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