Hi Andrew,
On Thu, Mar 16, 2017 at 08:41:35PM -0700, Andrew Morton wrote:
On Fri, 17 Mar 2017 09:46:30 +0800 kbuild test robot <fengguang.wu@xxxxxxxxx> wrote:
tree: git://git.cmpxchg.org/linux-mmotm.git master
head: 8276ddb3c638602509386f1a05f75326dbf5ce09
commit: a6d9a210db7db40e98f7502608c6f1413c44b9b9 [119/211] mm/hmm/migrate: support un-addressable ZONE_DEVICE page in migration
heh, I think the HMM patchset just scored the world record number of
build errors. Thanks for doing this.
But why didn't we find out earlier than v18? Don't you scoop patchsets
off the mailing list *before* someone merges them into an upstream
tree?
Yes we test LKML patches, however not all patches can be successfully
applied, so cannot be tested at all.
There is a way to significantly increase the chance of finding the
right git-apply base, however this idea needs buy-in by the GIT community:
https://lkml.org/lkml/2017/3/9/956
Currently we rely on heuristics and try-outs to select a git base.
For this patchset, log shows it cannot be applied to all of these
common bases
- linus/master
- recent RC kernels
- mmotm/master
- linux-next/master
[2017-01-13 13:45:44] Applying to linus/master..linux-review/J-r-me-Glisse/mm-memory-hotplug-convert-device-bool-to-int-to-allow-for-more-flags-v2/20170113-134544
[2017-01-13 13:45:45] Applying to linux/master..linux-review/J-r-me-Glisse/mm-memory-hotplug-convert-device-bool-to-int-to-allow-for-more-flags-v2/20170113-134545
[2017-01-13 13:45:52] Applying to mmotm/master..linux-review/J-r-me-Glisse/mm-memory-hotplug-convert-device-bool-to-int-to-allow-for-more-flags-v2/20170113-134552
[2017-01-13 13:46:03] Applying to v4.9-rc8..linux-review/J-r-me-Glisse/mm-memory-hotplug-convert-device-bool-to-int-to-allow-for-more-flags-v2/20170113-134603
[2017-01-13 13:46:10] Applying to v4.9-rc7..linux-review/J-r-me-Glisse/mm-memory-hotplug-convert-device-bool-to-int-to-allow-for-more-flags-v2/20170113-134610
[2017-01-13 13:46:14] Applying to v4.9-rc6..linux-review/J-r-me-Glisse/mm-memory-hotplug-convert-device-bool-to-int-to-allow-for-more-flags-v2/20170113-134614
[2017-01-13 13:46:17] Applying to next-20170111..linux-review/J-r-me-Glisse/mm-memory-hotplug-convert-device-bool-to-int-to-allow-for-more-flags-v2/20170113-134617
[2017-01-13 13:46:25] >>> apply-failed: "Jérôme Glisse" <jglisse@xxxxxxxxxx> [HMM v16 01/15] mm/memory/hotplug: convert device bool to int to allow for more flags v2
[2017-01-13 13:46:25] >>> apply-failed: "Jérôme Glisse" <jglisse@xxxxxxxxxx> [HMM v16 02/15] mm/ZONE_DEVICE/devmem_pages_remove: allow early removal of device memory v2
[2017-01-13 13:46:25] >>> apply-failed: "Jérôme Glisse" <jglisse@xxxxxxxxxx> [HMM v16 03/15] mm/ZONE_DEVICE/free-page: callback when page is freed
[2017-01-13 13:46:25] >>> apply-failed: "Jérôme Glisse" <jglisse@xxxxxxxxxx> [HMM v16 04/15] mm/ZONE_DEVICE/unaddressable: add support for un-addressable device memory v2
[2017-01-13 13:46:25] >>> apply-failed: "Jérôme Glisse" <jglisse@xxxxxxxxxx> [HMM v16 05/15] mm/ZONE_DEVICE/x86: add support for un-addressable device memory
[2017-01-13 13:46:25] >>> apply-failed: "Jérôme Glisse" <jglisse@xxxxxxxxxx> [HMM v16 06/15] mm/hmm: heterogeneous memory management (HMM for short)
[2017-01-13 13:46:25] >>> apply-failed: "Jérôme Glisse" <jglisse@xxxxxxxxxx> [HMM v16 07/15] mm/hmm/mirror: mirror process address space on device with HMM helpers
[2017-01-13 13:46:25] >>> apply-failed: "Jérôme Glisse" <jglisse@xxxxxxxxxx> [HMM v16 08/15] mm/hmm/mirror: helper to snapshot CPU page table
[2017-01-13 13:46:25] >>> apply-failed: "Jérôme Glisse" <jglisse@xxxxxxxxxx> [HMM v16 09/15] mm/hmm/mirror: device page fault handler
[2017-01-13 13:46:25] >>> apply-failed: "Jérôme Glisse" <jglisse@xxxxxxxxxx> [HMM v16 10/15] mm/hmm/migrate: support un-addressable ZONE_DEVICE page in migration
...
Best Regards,
Fengguang Wu
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