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[Qemu-devel] [PULL 2/2] mips/malta: load the initrd at the end of the lo
From: |
Yongbok Kim |
Subject: |
[Qemu-devel] [PULL 2/2] mips/malta: load the initrd at the end of the low memory |
Date: |
Tue, 11 Jul 2017 16:16:05 +0100 |
From: Aurelien Jarno <address@hidden>
Currently the malta board is loading the initrd just after the kernel.
This doesn't work for kaslr enabled kernels, as the initrd ends-up being
overwritten.
Move the initrd at the end of the low memory, that should leave a
sufficient gap for kaslr.
Signed-off-by: Aurelien Jarno <address@hidden>
Tested-by: Yongbok Kim <address@hidden>
Signed-off-by: Yongbok Kim <address@hidden>
---
hw/mips/mips_malta.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/hw/mips/mips_malta.c b/hw/mips/mips_malta.c
index 95cdabb..dad2f37 100644
--- a/hw/mips/mips_malta.c
+++ b/hw/mips/mips_malta.c
@@ -841,8 +841,9 @@ static int64_t load_kernel (void)
if (loaderparams.initrd_filename) {
initrd_size = get_image_size (loaderparams.initrd_filename);
if (initrd_size > 0) {
- initrd_offset = (kernel_high + ~INITRD_PAGE_MASK) &
INITRD_PAGE_MASK;
- if (initrd_offset + initrd_size > ram_size) {
+ initrd_offset = (loaderparams.ram_low_size - initrd_size
+ - ~INITRD_PAGE_MASK) & INITRD_PAGE_MASK;
+ if (kernel_high >= initrd_offset) {
fprintf(stderr,
"qemu: memory too small for initial ram disk '%s'\n",
loaderparams.initrd_filename);
--
2.7.4