Hyperion Entertainment Message Boards

Posted: **Thu Jun 04, 2020 1:42 pm**

Hi All,

I released the first alpha of kernel 5.8 today.

New:

Download: linux-image-5.8-alpha1-X1000_X5000.tar.gz

Unfortunately the kernels don't boot on my AmigaOnes (X1000 and X5000/40).

They can't initialize the Radeon graphics cards.

Cheers,
Christian

Posted: **Thu Jun 04, 2020 2:11 pm**

I was able to revert the DRM updates with the following command:

Code: Select all

git revert faa392181a0bd42c5478175cef601adeecdc91b6 -m 1

Unfortunately it doesn't solve the boot issue.

Posted: **Thu Jun 04, 2020 2:27 pm**

I was able to revert the commit powerpc/mm: drop platform defined pmd_mknotpresent() with the following command:

Code: Select all

git revert 124cb3a62d54b271d7acfcf6596cb6a88766a344

It doesn't solve the issue either.

Posted: **Thu Jun 04, 2020 2:30 pm**

I was able to revert the commit powerpc: use __vmalloc_node in alloc_vm_stack with the following command:

Code: Select all

git revert cb0849a990b2928760bc38561e8d33b554196e25

OK, this revert doesn't solve the issue.

Posted: **Thu Jun 04, 2020 2:39 pm**

I was able to revert the commit powerpc: remove __ioremap_at and __iounmap_at with the following command:

Code: Select all

git revert 91f03f297c46bd2ced1e73fc9a668292145b1135

OK, this commit isn't the problem.

Posted: **Thu Jun 04, 2020 3:03 pm**

I wasn't able to revert the commit powerpc: add an ioremap_phb helper (electra_cf) with the following command:

Code: Select all

git revert b274014c6d191ec92c4921d5e84c90f6ed2f38a0

Posted: **Thu Jun 04, 2020 3:09 pm**

I was able to revert the commit
gpu/drm: remove the powerpc hack in drm_legacy_sg_alloc with the following command:

Code: Select all

git revert d28ff991b2e23049c30584c1d97681087193879f

This doesn't solve the issue.

Posted: **Thu Jun 04, 2020 4:18 pm**

BTW, it doesn't boot in a virtual QEMU PowerPC machine either.

Posted: **Thu Jun 04, 2020 5:59 pm**

I reported the boot issue to the Linuxppc-mailing list today.

Link: Boot issue with the latest Git kernel

Posted: **Fri Jun 05, 2020 3:05 pm**

Code: Select all
```
git bisect start
```

Code: Select all

git bisect good 3d77e6a8804abcc0504c904bd6e5cdf3a5cf8162

(Good: Linux 5.7)

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git bisect bad 6929f71e46bdddbf1c4d67c2728648176c67c555

(Bad: atomisp: avoid warning about unused function -- 2020-06-03 21:22:46 -0700)

Code: Select all

[ff45fc3ca0f3c38e752d75f71b8d8efcf409e42d] mm: simplify calling a compound page destructor

git bisect bad

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[cfa3b8068b09f25037146bfd5eed041b78878bee] Merge tag 'for-linus-hmm' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma

git bisect bad

Code: Select all

[17e0a7cb6a254c6d086562e7adf8b7ac24d267f3] Merge tag 'x86-cleanups-2020-06-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

git bisect good

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[17839856fd588f4ab6b789f482ed3ffd7c403e1f] gup: document and work around "COW can break either way" issue

git bisect good

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[c5d6c13843880ad0112f0513f3eb041b258be66e] Merge tag 'mmc-v5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc

git bisect bad

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[94709049fb8442fb2f7b91fbec3c2897a75e18df] Merge branch 'akpm' (patches from Andrew)

git bisect bad

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[08d3090fc8dadd7b726dbda99d1baa39382c3f2c] mm/swapfile.c: simplify the calculation of n_goal

git bisect good

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[4926627793c0a7e7db2bc674e1d06777e86d8dab] mm: remove __get_vm_area

git bisect good

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[2b9059489c839e67ca9254913325e18cea11a980] mm: remove __vmalloc_node_flags_caller

git bisect good

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[6c0c7d2b365b21a413f6d75772a8a4a2c7d36916] mm/ioremap: track which page-table levels were modified

git bisect bad

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[cb0849a990b2928760bc38561e8d33b554196e25] powerpc: use __vmalloc_node in alloc_vm_stack

git bisect good

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[d8626138009ba58ae2c22356966c2edaa1f1c3b5] mm: add functions to track page directory modifications

git bisect good

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[2ba3e6947aed9bb9575eb1603c0ac6e39185d32a] mm/vmalloc: track which page-table levels were modified

git bisect bad

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2ba3e6947aed9bb9575eb1603c0ac6e39185d32a is the first bad commit
commit 2ba3e6947aed9bb9575eb1603c0ac6e39185d32a
Author: Joerg Roedel <[email protected]>
Date:   Mon Jun 1 21:52:22 2020 -0700

    mm/vmalloc: track which page-table levels were modified
    
    Track at which levels in the page-table entries were modified by
    vmap/vunmap.
    
    After the page-table has been modified, use that information do decide
    whether the new arch_sync_kernel_mappings() needs to be called.
    
    [[email protected]: map_kernel_range_noflush() needs the arch_sync_kernel_mappings() call]
    Signed-off-by: Joerg Roedel <[email protected]>
    Signed-off-by: Andrew Morton <[email protected]>
    Acked-by: Andy Lutomirski <[email protected]>
    Acked-by: Peter Zijlstra (Intel) <[email protected]>
    Cc: Arnd Bergmann <[email protected]>
    Cc: Christoph Hellwig <[email protected]>
    Cc: Dave Hansen <[email protected]>
    Cc: "H . Peter Anvin" <[email protected]>
    Cc: Ingo Molnar <[email protected]>
    Cc: Matthew Wilcox (Oracle) <[email protected]>
    Cc: Michal Hocko <[email protected]>
    Cc: "Rafael J. Wysocki" <[email protected]>
    Cc: Steven Rostedt (VMware) <[email protected]>
    Cc: Thomas Gleixner <[email protected]>
    Cc: Vlastimil Babka <[email protected]>
    Link: http://lkml.kernel.org/r/[email protected]
    Signed-off-by: Linus Torvalds <[email protected]>

:040000 040000 f6d8e1fc7b44c9e23aa419ac35911cc211cbf3cf 940c6a816e17a731da190c7173c88191e46b935f M	include
:040000 040000 053ad50b6860da11900c014ce3723149cfdef6d5 56f75109266239b6c8704693105ab2b9222a4304 M	mm

The first bad commit is mm/vmalloc: track which page-table levels were modified.

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