dcavalca / rpms / grub2

Forked from rpms/grub2 3 years ago
Clone

Blame SOURCES/0237-linux.c-Ensure-that-initrd-is-page-aligned.patch

27a4da
From f38d60a9c4bf9b695f40376d16b14da11456f59b Mon Sep 17 00:00:00 2001
27a4da
From: Vladimir Serbinenko <phcoder@gmail.com>
27a4da
Date: Thu, 7 May 2015 16:23:39 +0200
27a4da
Subject: [PATCH 237/260] linux.c: Ensure that initrd is page-aligned.
27a4da
27a4da
---
27a4da
 grub-core/loader/i386/linux.c | 11 +++++------
27a4da
 1 file changed, 5 insertions(+), 6 deletions(-)
27a4da
27a4da
diff --git a/grub-core/loader/i386/linux.c b/grub-core/loader/i386/linux.c
27a4da
index 53f74ae06..764cde203 100644
27a4da
--- a/grub-core/loader/i386/linux.c
27a4da
+++ b/grub-core/loader/i386/linux.c
27a4da
@@ -70,7 +70,6 @@ static grub_addr_t prot_mode_target;
27a4da
 static void *initrd_mem;
27a4da
 static grub_addr_t initrd_mem_target;
27a4da
 static grub_size_t prot_init_space;
27a4da
-static grub_uint32_t initrd_pages;
27a4da
 static struct grub_relocator *relocator = NULL;
27a4da
 static void *efi_mmap_buf;
27a4da
 static grub_size_t maximal_cmdline_size;
27a4da
@@ -1055,7 +1054,7 @@ static grub_err_t
27a4da
 grub_cmd_initrd (grub_command_t cmd __attribute__ ((unused)),
27a4da
 		 int argc, char *argv[])
27a4da
 {
27a4da
-  grub_size_t size = 0;
27a4da
+  grub_size_t size = 0, aligned_size = 0;
27a4da
   grub_addr_t addr_min, addr_max;
27a4da
   grub_addr_t addr;
27a4da
   grub_err_t err;
27a4da
@@ -1077,8 +1076,7 @@ grub_cmd_initrd (grub_command_t cmd __attribute__ ((unused)),
27a4da
     goto fail;
27a4da
 
27a4da
   size = grub_get_initrd_size (&initrd_ctx);
27a4da
-
27a4da
-  initrd_pages = (page_align (size) >> 12);
27a4da
+  aligned_size = ALIGN_UP (size, 4096);
27a4da
 
27a4da
   /* Get the highest address available for the initrd.  */
27a4da
   if (grub_le_to_cpu16 (linux_params.version) >= 0x0203)
27a4da
@@ -1106,7 +1104,7 @@ grub_cmd_initrd (grub_command_t cmd __attribute__ ((unused)),
27a4da
   addr_min = (grub_addr_t) prot_mode_target + prot_init_space;
27a4da
 
27a4da
   /* Put the initrd as high as possible, 4KiB aligned.  */
27a4da
-  addr = (addr_max - size) & ~0xFFF;
27a4da
+  addr = (addr_max - aligned_size) & ~0xFFF;
27a4da
 
27a4da
   if (addr < addr_min)
27a4da
     {
27a4da
@@ -1117,7 +1115,8 @@ grub_cmd_initrd (grub_command_t cmd __attribute__ ((unused)),
27a4da
   {
27a4da
     grub_relocator_chunk_t ch;
27a4da
     err = grub_relocator_alloc_chunk_align (relocator, &ch,
27a4da
-					    addr_min, addr, size, 0x1000,
27a4da
+					    addr_min, addr, aligned_size,
27a4da
+					    0x1000,
27a4da
 					    GRUB_RELOCATOR_PREFERENCE_HIGH,
27a4da
 					    1);
27a4da
     if (err)
27a4da
-- 
27a4da
2.13.0
27a4da