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From f38d60a9c4bf9b695f40376d16b14da11456f59b Mon Sep 17 00:00:00 2001
From: Vladimir Serbinenko <phcoder@gmail.com>
Date: Thu, 7 May 2015 16:23:39 +0200
Subject: [PATCH 237/237] linux.c: Ensure that initrd is page-aligned.
---
grub-core/loader/i386/linux.c | 11 +++++------
1 file changed, 5 insertions(+), 6 deletions(-)
diff --git a/grub-core/loader/i386/linux.c b/grub-core/loader/i386/linux.c
index 53f74ae..764cde2 100644
--- a/grub-core/loader/i386/linux.c
+++ b/grub-core/loader/i386/linux.c
@@ -70,7 +70,6 @@ static grub_addr_t prot_mode_target;
static void *initrd_mem;
static grub_addr_t initrd_mem_target;
static grub_size_t prot_init_space;
-static grub_uint32_t initrd_pages;
static struct grub_relocator *relocator = NULL;
static void *efi_mmap_buf;
static grub_size_t maximal_cmdline_size;
@@ -1055,7 +1054,7 @@ static grub_err_t
grub_cmd_initrd (grub_command_t cmd __attribute__ ((unused)),
int argc, char *argv[])
{
- grub_size_t size = 0;
+ grub_size_t size = 0, aligned_size = 0;
grub_addr_t addr_min, addr_max;
grub_addr_t addr;
grub_err_t err;
@@ -1077,8 +1076,7 @@ grub_cmd_initrd (grub_command_t cmd __attribute__ ((unused)),
goto fail;
size = grub_get_initrd_size (&initrd_ctx);
-
- initrd_pages = (page_align (size) >> 12);
+ aligned_size = ALIGN_UP (size, 4096);
/* Get the highest address available for the initrd. */
if (grub_le_to_cpu16 (linux_params.version) >= 0x0203)
@@ -1106,7 +1104,7 @@ grub_cmd_initrd (grub_command_t cmd __attribute__ ((unused)),
addr_min = (grub_addr_t) prot_mode_target + prot_init_space;
/* Put the initrd as high as possible, 4KiB aligned. */
- addr = (addr_max - size) & ~0xFFF;
+ addr = (addr_max - aligned_size) & ~0xFFF;
if (addr < addr_min)
{
@@ -1117,7 +1115,8 @@ grub_cmd_initrd (grub_command_t cmd __attribute__ ((unused)),
{
grub_relocator_chunk_t ch;
err = grub_relocator_alloc_chunk_align (relocator, &ch,
- addr_min, addr, size, 0x1000,
+ addr_min, addr, aligned_size,
+ 0x1000,
GRUB_RELOCATOR_PREFERENCE_HIGH,
1);
if (err)
--
2.9.3