linux-next: manual merge of the kvm tree with the powerpc tree

From: Stephen Rothwell
Date: Fri Dec 21 2018 - 00:16:36 EST

Hi all,

Today's linux-next merge of the kvm tree got a conflict in:


between commit:

49a502ea23bf ("powerpc/mm: Make NULL pointer deferences explicit on bad page faults.")

from the powerpc tree and commit:

d7b456152230 ("KVM: PPC: Book3S HV: Implement functions to access quadrants 1 & 2")

from the kvm tree.

I fixed it up (see below) and can carry the fix as necessary. This
is now fixed as far as linux-next is concerned, but any non trivial
conflicts should be mentioned to your upstream maintainer when your tree
is submitted for merging. You may also want to consider cooperating
with the maintainer of the conflicting tree to minimise any particularly
complex conflicts.

Stephen Rothwell

diff --cc arch/powerpc/mm/fault.c
index c866d9a710fe,2e6fb1d758c3..000000000000
--- a/arch/powerpc/mm/fault.c
+++ b/arch/powerpc/mm/fault.c
@@@ -650,9 -636,9 +650,10 @@@ void bad_page_fault(struct pt_regs *reg
switch (TRAP(regs)) {
case 0x300:
case 0x380:
+ case 0xe00:
- printk(KERN_ALERT "Unable to handle kernel paging request for "
- "data at address 0x%08lx\n", regs->dar);
+ pr_alert("BUG: %s at 0x%08lx\n",
+ regs->dar < PAGE_SIZE ? "Kernel NULL pointer dereference" :
+ "Unable to handle kernel data access", regs->dar);
case 0x400:
case 0x480:

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