Re: [Xen-devel] [PATCH v12 00/10] x86: multiboot2 protocol support

[Doug Goldstein <cardoe@xxxxxxxxxx>]

On 1/19/17 8:34 PM, Daniel Kiper wrote:
> Hi,
> 
> I am sending twelfth version of multiboot2 protocol support for
> legacy BIOS and EFI platforms. This patch series release contains
> fixes for all known/confirmed issues.

With my fix to efi_multiboot2() in 5/10 and the entire series applied, I
get the following on some of the systems I have access to:

(XEN) [    2.000533] HVM: HAP page sizes: 4kB, 2MB, 1GB
(XEN) [    7.012109] Stuck ??
(XEN) [    7.012129] Failed to bring up CPU 1 (error -5)
(XEN) [   12.023606] Stuck ??
(XEN) [   12.023622] Failed to bring up CPU 2 (error -5)
(XEN) [   17.035099] Stuck ??
(XEN) [   17.035115] Failed to bring up CPU 3 (error -5)
(XEN) [   17.035116] Brought up 1 CPUs

On other machines they reset when setting PAGING into cr0 (actually the
jmp following it) on line 124 of trampoline.S

If I drop the series to just 2-5 against staging (since patch 1 has
already gone in) and apply the fix to efi_multiboot2() then all the
machines I presently have access to boot.

Effectively the fix to efi_multiboot2() gets us back to the same level
of hardware support that v11 + my v5 was at for 1-5. So I will extend my:

Reviewed-by: Doug Goldstein <cardoe@xxxxxxxxxx>
Tested-by: Doug Goldstein <cardoe@xxxxxxxxxx>

on the condition that the fix is applied to 5/10 prior to commit.

-- 
Doug Goldstein

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