diff options
| author | Sam Bobroff <sam.bobroff@au1.ibm.com> | 2018-02-12 11:19:29 +1100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-03-03 10:24:38 +0100 |
| commit | 27245fc6f7a8d4f4830f55b50341ae37d920d9a7 (patch) | |
| tree | cb9d49d85363d60eb4ca878a5e5396d88618e607 /arch/arm64 | |
| parent | 60190108f7e2643bb6dd6465eed69c9d18b26b37 (diff) | |
powerpc/pseries: Enable RAS hotplug events later
commit c9dccf1d074a67d36c510845f663980d69e3409b upstream.
Currently if the kernel receives a memory hot-unplug event early
enough, it may get stuck in an infinite loop in
dissolve_free_huge_pages(). This appears as a stall just after:
pseries-hotplug-mem: Attempting to hot-remove XX LMB(s) at YYYYYYYY
It appears to be caused by "minimum_order" being uninitialized, due to
init_ras_IRQ() executing before hugetlb_init().
To correct this, extract the part of init_ras_IRQ() that enables
hotplug event processing and place it in the machine_late_initcall
phase, which is guaranteed to be after hugetlb_init() is called.
Signed-off-by: Sam Bobroff <sam.bobroff@au1.ibm.com>
Acked-by: Balbir Singh <bsingharora@gmail.com>
[mpe: Reorder the functions to make the diff readable]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/arm64')
0 files changed, 0 insertions, 0 deletions