Hello Alan, hello Christoph,
>> I recently started compiling the 5.4. kernel starting with rc3 and noticed
>> that both my keyboard and mouse aren't working
>> when connected to the motherboards USB ports (they work fine when connected
>> to an xhci extension card) and they work fine
>> with the 5.3 series up to 5.3.6
finally:
249baa54790171438524ba97e8e0485dd6aa2762 is the first bad commit
commit 249baa54790171438524ba97e8e0485dd6aa2762
Author: Christoph Hellwig <h...@lst.de>
Date: Tue Aug 6 15:01:38 2019 +0300
dma-mapping: provide a better default ->get_required_mask
Most dma_map_ops instances are IOMMUs that work perfectly fine in 32-bits
of IOVA space, and the generic direct mapping code already provides its
own routines that is intelligent based on the amount of memory actually
present. Wire up the dma-direct routine for the ARM direct mapping code
as well, and otherwise default to the constant 32-bit mask. This way
we only need to override it for the occasional odd IOMMU that requires
64-bit IOVA support, or IOMMU drivers that are more efficient if they
can fall back to the direct mapping.
Signed-off-by: Christoph Hellwig <h...@lst.de>
:040000 040000 99ba74322d98c2a8dc96fb03bf9cbb0bc20bff42
ad137a4ff5f2b810b71f12e0ad053c91e318ed25 M arch
:040000 040000 0e0709ea4d18cefbd5dd6bddc9731aea71513e0f
46cd62afd5ffdc15187311fe33238e1ca743b9a5 M kernel
Cheers,
Benedikt
git bisect log
git bisect start
# bad: [bc88f85c6c09306bd21917e1ae28205e9cd775a7] kthread: make
__kthread_queue_delayed_work static
git bisect bad bc88f85c6c09306bd21917e1ae28205e9cd775a7
# good: [4d856f72c10ecb060868ed10ff1b1453943fc6c8] Linux 5.3
git bisect good 4d856f72c10ecb060868ed10ff1b1453943fc6c8
# good: [81160dda9a7aad13c04e78bb2cfd3c4630e3afab] Merge
git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
git bisect good 81160dda9a7aad13c04e78bb2cfd3c4630e3afab
# bad: [a703d279c57e1bfe2b6536c3a17c1c498b416d24] Merge tag 'clk-for-linus' of
git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
git bisect bad a703d279c57e1bfe2b6536c3a17c1c498b416d24
# good: [29d9d76a72ce0d8485796c0f930007444684bff0] Merge tag
'drm-intel-next-2019-08-22' of git://anongit.freedesktop.org/drm/drm-intel into
drm-next
git bisect good 29d9d76a72ce0d8485796c0f930007444684bff0
# bad: [3c2edc36a77420d8be05d656019dbc8c31535992] Merge tag 'pinctrl-v5.4-1' of
git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
git bisect bad 3c2edc36a77420d8be05d656019dbc8c31535992
# good: [7a0d796100daa8e75cda2c166c85d57775704fd4] Merge tag
'for-linus-5.4-ofs1' of
git://git.kernel.org/pub/scm/linux/kernel/git/hubcap/linux
git bisect good 7a0d796100daa8e75cda2c166c85d57775704fd4
# bad: [a9f8b38a071b468276a243ea3ea5a0636e848cf2] Merge tag 'for-linus-5.4-1'
of git://github.com/cminyard/linux-ipmi
git bisect bad a9f8b38a071b468276a243ea3ea5a0636e848cf2
# bad: [671df189537883f36cf9c7d4f9495bfac0f86627] Merge tag 'dma-mapping-5.4'
of git://git.infradead.org/users/hch/dma-mapping
git bisect bad 671df189537883f36cf9c7d4f9495bfac0f86627
# good: [c9fe5630dae1df2328d82042602e2c4d1add8d57] Merge tag 'configfs-for-5.4'
of git://git.infradead.org/users/hch/configfs
git bisect good c9fe5630dae1df2328d82042602e2c4d1add8d57
# good: [7a01ee42209c00e551c7cfb581be7a207a376f00] dma-mapping: remove the
dma_mmap_from_dev_coherent export
git bisect good 7a01ee42209c00e551c7cfb581be7a207a376f00
# bad: [a8e6d950cdc1012aede8a84d85f902a53d895174] xen/arm: use
dev_is_dma_coherent
git bisect bad a8e6d950cdc1012aede8a84d85f902a53d895174
# bad: [512317401f6a337e617ec284d20dec5fa3a951ec] dma-mapping: always use
VM_DMA_COHERENT for generic DMA remap
git bisect bad 512317401f6a337e617ec284d20dec5fa3a951ec
# good: [d9295532d5725e5926d76470acdfd239c8d2aad3] dma-mapping: remove the
dma_declare_coherent_memory export
git bisect good d9295532d5725e5926d76470acdfd239c8d2aad3
# bad: [fe9041c245196c6c61091ccc2c74b73ab9a5fc50] vmalloc: lift the arm flag
for coherent mappings to common code
git bisect bad fe9041c245196c6c61091ccc2c74b73ab9a5fc50
# bad: [249baa54790171438524ba97e8e0485dd6aa2762] dma-mapping: provide a better
default ->get_required_mask
git bisect bad 249baa54790171438524ba97e8e0485dd6aa2762
# first bad commit: [249baa54790171438524ba97e8e0485dd6aa2762] dma-mapping:
provide a better default ->get_required_mask
Am 18.10.19 um 00:31 schrieb Alan Stern:
> On Thu, 17 Oct 2019, Benedikt Schemmer wrote:
>
>> Hi all,
>>
>> I recently started compiling the 5.4. kernel starting with rc3 and noticed
>> that both my keyboard and mouse aren't working
>> when connected to the motherboards USB ports (they work fine when connected
>> to an xhci extension card) and they work fine
>> with the 5.3 series up to 5.3.6
>
> Can you use git bisect to track the problem down to a particular commit?
>
> Alan Stern
>
