Re: [BUG] can't boot up: unable to handle kernel paging request at ffffffffff340003

Matt Fleming
2014-02-13T10:55:47Z

On Wed, 12 Feb, at 09:15:03AM, Toshi Kani wrote:
>
> Hi Matt,
>
> Yes, I agree that the table size should be 0x38. However, ACPI spec
> states that bit0 of status indicates if the boot image graphic is valid.
> This bit is set to 0 (invalid) on the system. Can you check this bit
> and return when invalid?

Madper, could you try out this patch?

---

diff --git a/arch/x86/platform/efi/efi-bgrt.c b/arch/x86/platform/efi/efi-bgrt.c
index 4df9591eadad..f15103dff4b4 100644
--- a/arch/x86/platform/efi/efi-bgrt.c
+++ b/arch/x86/platform/efi/efi-bgrt.c
@@ -42,7 +42,7 @@ void __init efi_bgrt_init(void)

if (bgrt_tab->header.length < sizeof(*bgrt_tab))
return;
- if (bgrt_tab->version != 1)
+ if (bgrt_tab->version != 1 || bgrt_tab->status != 1)
return;
if (bgrt_tab->image_type != 0 || !bgrt_tab->image_address)
return;

--
Matt Fleming, Intel Open Source Technology Center