Messages in this thread | | | Date | Sun, 22 Sep 2013 15:37:22 +0200 | From | Borislav Petkov <> | Subject | Re: [PATCH -v2] EFI: Runtime services virtual mapping |
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On Sun, Sep 22, 2013 at 08:35:15PM +0800, Dave Young wrote: > I tested your new patch, it works both with efi stub and grub boot in > 1st kernel.
Good, thanks!
> But it paniced in kexec boot with my kexec related patcheset, the patchset
That's the second kernel, right?
> contains 3 patch: > 1. introduce cmdline kexecboot=<0|1|2>; 1 == kexec, 2 == kdump > 2. export physical addr fw_vendor, runtime, tables to /sys/firmware/efi/systab > 3. if kexecboot != 0, use fw_vendor, runtime, tables from bootparams; Also do not > call SetVirtualAddressMao in case kexecboot. > > The panic happens at the last line of efi_init: > /* clean DUMMY object */ > efi.set_variable(efi_dummy_name, &EFI_DUMMY_GUID, > EFI_VARIABLE_NON_VOLATILE | > EFI_VARIABLE_BOOTSERVICE_ACCESS | > EFI_VARIABLE_RUNTIME_ACCESS, > 0, NULL); > > Below is the dmesg: > [ 0.003359] pid_max: default: 32768 minimum: 301 > [ 0.004792] BUG: unable to handle kernel paging request at fffffffefde97e70 > [ 0.006666] IP: [<ffffffff8103a1db>] virt_efi_set_variable+0x40/0x54 > [ 0.006666] PGD 36981067 PUD 35828063 PMD 0
Here it is - fffffffefde97e70 is not mapped in the pagetable, PMD is 0.
Ok, can you upload your patches somewhere and tell me exactly how to reproduce this so that I can take a look too?
Thanks.
-- Regards/Gruss, Boris.
Sent from a fat crate under my desk. Formatting is fine. --
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