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Re: [Xen-devel] [PATCH] xen: arm: Select ramdisk bootmodule early enough when building dom0



Hi Ian,

On 26/07/14 09:04, Ian Campbell wrote:
I thought in 0040b649d6df "xen: arm: Only lookup kernel/initrd bootmodule once
while building dom0" that I had identified place_modules as being soon enough,
but I was wrong, since write_properties wants to use it sooner.

Select the initrd boot module in kernel_probe at the same time we select the
kernel to avoid all this.

Signed-off-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
Acked-by: Julien Grall <julien.grall@xxxxxxxxxx>

Regards,

---
  xen/arch/arm/kernel.c |    8 ++++++--
  1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/xen/arch/arm/kernel.c b/xen/arch/arm/kernel.c
index 6912abd..31a9a85 100644
--- a/xen/arch/arm/kernel.c
+++ b/xen/arch/arm/kernel.c
@@ -68,7 +68,7 @@ static void place_modules(struct kernel_info *info,
                            paddr_t kernbase, paddr_t kernend)
  {
      /* Align DTB and initrd size to 2Mb. Linux only requires 4 byte alignment 
*/
-    const struct bootmodule *mod = boot_module_find_by_kind(BOOTMOD_RAMDISK);
+    const struct bootmodule *mod = info->initrd_bootmodule;
      const paddr_t initrd_len = ROUNDUP(mod ? mod->size : 0, MB(2));
      const paddr_t dtb_len = ROUNDUP(fdt_totalsize(info->fdt), MB(2));
      const paddr_t modsize = initrd_len + dtb_len;
@@ -116,7 +116,6 @@ static void place_modules(struct kernel_info *info,

      info->dtb_paddr = modbase;
      info->initrd_paddr = info->dtb_paddr + dtb_len;
-    info->initrd_bootmodule = mod;
  }

  static paddr_t kernel_zimage_place(struct kernel_info *info)
@@ -390,6 +389,11 @@ int kernel_probe(struct kernel_info *info)

      printk("Loading kernel from boot module @ %"PRIpaddr"\n", start);

+    info->initrd_bootmodule = boot_module_find_by_kind(BOOTMOD_RAMDISK);
+    if ( info->initrd_bootmodule )
+        printk("Loading ramdisk from boot module @ %"PRIpaddr"\n",
+               info->initrd_bootmodule->start);
+
  #ifdef CONFIG_ARM_64
      rc = kernel_image64_probe(info, start, size);
      if (rc < 0)


--
Julien Grall

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