[PATCH 0/4][SRU][B-HWE][D][V3] fix i386 boot crashes, LP: #1838115

[Colin King]

From: Colin Ian King <colin.king at canonical.com>

BugLink: https://bugs.launchpad.net/bugs/1838115

Fix i386 boot crashes and i915 graphics corruption. Upstream fix
3f8fd02b1bf1d7b (" mm/vmalloc: Sync unmappings in 
__purge_vmap_area_lazy()") fixes the core issue, and pull in 3
other prerequesits to allow patch to apply cleanly w/o any
backporting.

Tested on Ubuntu Bionic i386 and amd64 with some stress-testing
with stress-ng --vm 4 --brk 1 for 5 minutes.

Joerg Roedel (3):
  x86/mm: Check for pfn instead of page in vmalloc_sync_one()
  x86/mm: Sync also unmappings in vmalloc_sync_all()
  mm/vmalloc: Sync unmappings in __purge_vmap_area_lazy()

Uladzislau Rezki (Sony) (1):
  mm/vmalloc.c: add priority threshold to __purge_vmap_area_lazy()

 arch/x86/mm/fault.c | 15 ++++++---------
 mm/vmalloc.c        | 27 +++++++++++++++++++++------
 2 files changed, 27 insertions(+), 15 deletions(-)

-- 
2.7.4