Patch "KVM: s390/mm: Properly reset no-dat" has been added to the 5.10-stable tree

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



This is a note to let you know that I've just added the patch titled

    KVM: s390/mm: Properly reset no-dat

to the 5.10-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     kvm-s390-mm-properly-reset-no-dat.patch
and it can be found in the queue-5.10 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.


>From 27072b8e18a73ffeffb1c140939023915a35134b Mon Sep 17 00:00:00 2001
From: Claudio Imbrenda <imbrenda@xxxxxxxxxxxxx>
Date: Thu, 9 Nov 2023 13:36:24 +0100
Subject: KVM: s390/mm: Properly reset no-dat

From: Claudio Imbrenda <imbrenda@xxxxxxxxxxxxx>

commit 27072b8e18a73ffeffb1c140939023915a35134b upstream.

When the CMMA state needs to be reset, the no-dat bit also needs to be
reset. Failure to do so could cause issues in the guest, since the
guest expects the bit to be cleared after a reset.

Cc: <stable@xxxxxxxxxxxxxxx>
Reviewed-by: Nico Boehr <nrb@xxxxxxxxxxxxx>
Message-ID: <20231109123624.37314-1-imbrenda@xxxxxxxxxxxxx>
Signed-off-by: Claudio Imbrenda <imbrenda@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 arch/s390/mm/pgtable.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/s390/mm/pgtable.c
+++ b/arch/s390/mm/pgtable.c
@@ -717,7 +717,7 @@ void ptep_zap_unused(struct mm_struct *m
 		pte_clear(mm, addr, ptep);
 	}
 	if (reset)
-		pgste_val(pgste) &= ~_PGSTE_GPS_USAGE_MASK;
+		pgste_val(pgste) &= ~(_PGSTE_GPS_USAGE_MASK | _PGSTE_GPS_NODAT);
 	pgste_set_unlock(ptep, pgste);
 	preempt_enable();
 }


Patches currently in stable-queue which might be from imbrenda@xxxxxxxxxxxxx are

queue-5.10/kvm-s390-mm-properly-reset-no-dat.patch




[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Index of Archives]     [Linux USB Devel]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux