Hi, latest linus tree kernel hangs on my Thinkpad T420.
I bisected this issue, culprit commit is below: commit 1acba98f810a14b1255e34bc620594f83de37e36 Author: Matthew Garrett <[email protected]> Date: Sun Jun 2 18:12:25 2013 -0400 UEFI: Don't pass boot services regions to SetVirtualAddressMap() We need to map boot services regions during startup in order to avoid firmware bugs, but we shouldn't be passing those regions to SetVirtualAddressMap(). Ensure that we're only passing regions that are marked as being mapped at runtime. Signed-off-by: Matthew Garrett <[email protected]> Signed-off-by: Matt Fleming <[email protected]> Reverting this patch, the kernel boot just fine. Another problem is: With this patch applied I tried noefi boot, but kernel paniced, looks like efivar_init depends on efi runtime. Below patches works for me about noefi boot though I'm not sure if it's a right fix, please review. --- linux-2.6.orig/drivers/firmware/efi/vars.c +++ linux-2.6/drivers/firmware/efi/vars.c @@ -370,6 +370,8 @@ int efivar_init(int (*func)(efi_char16_t efi_guid_t vendor_guid; int err = 0; + if (! efi_enabled(EFI_RUNTIME_SERVICES)) + return -ENODEV; variable_name = kzalloc(variable_name_size, GFP_KERNEL); if (!variable_name) { printk(KERN_ERR "efivars: Memory allocation failed.\n"); -- Thanks Dave -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
