From: Janosch Frank <frankja@linux.vnet.ibm.com>
Date: Fri, 27 Jan 2017 09:23:59 +0000 (+0100)
Subject: KVM: s390: Fix RRBE return code not being CC
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=4bead2a423ea5268b0ab3cba058e215c65ee2cbd;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

KVM: s390: Fix RRBE return code not being CC

reset_guest_reference_bit needs to return the CC, so we can set it in
the guest PSW when emulating RRBE. Right now it only returns 0.

Let's fix that.

Signed-off-by: Janosch Frank <frankja@linux.vnet.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
---

diff --git a/arch/s390/mm/pgtable.c b/arch/s390/mm/pgtable.c
index 7a1897c51c54..f70db837ddc4 100644
--- a/arch/s390/mm/pgtable.c
+++ b/arch/s390/mm/pgtable.c
@@ -741,7 +741,7 @@ int reset_guest_reference_bit(struct mm_struct *mm, unsigned long addr)
 
 	pgste_set_unlock(ptep, new);
 	pte_unmap_unlock(ptep, ptl);
-	return 0;
+	return cc;
 }
 EXPORT_SYMBOL(reset_guest_reference_bit);