Patch "powerpc/pseries/memhotplug: Quieten some DLPAR operations" has been added to the 5.10-stable tree

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

    powerpc/pseries/memhotplug: Quieten some DLPAR operations

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:
     powerpc-pseries-memhotplug-quieten-some-dlpar-operat.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.



commit c48ad95b1ce1aa55d94c25601aea06b5b8b5b041
Author: Laurent Dufour <ldufour@xxxxxxxxxxxxx>
Date:   Fri Dec 11 15:59:54 2020 +0100

    powerpc/pseries/memhotplug: Quieten some DLPAR operations
    
    [ Upstream commit 20e9de85edae3a5866f29b6cce87c9ec66d62a1b ]
    
    When attempting to remove by index a set of LMBs a lot of messages are
    displayed on the console, even when everything goes fine:
    
      pseries-hotplug-mem: Attempting to hot-remove LMB, drc index 8000002d
      Offlined Pages 4096
      pseries-hotplug-mem: Memory at 2d0000000 was hot-removed
    
    The 2 messages prefixed by "pseries-hotplug-mem" are not really
    helpful for the end user, they should be debug outputs.
    
    In case of error, because some of the LMB's pages couldn't be
    offlined, the following is displayed on the console:
    
      pseries-hotplug-mem: Attempting to hot-remove LMB, drc index 8000003e
      pseries-hotplug-mem: Failed to hot-remove memory at 3e0000000
      dlpar: Could not handle DLPAR request "memory remove index 0x8000003e"
    
    Again, the 2 messages prefixed by "pseries-hotplug-mem" are useless,
    and the generic DLPAR prefixed message should be enough.
    
    These 2 first changes are mainly triggered by the changes introduced
    in drmgr:
      https://groups.google.com/g/powerpc-utils-devel/c/Y6ef4NB3EzM/m/9cu5JHRxAQAJ
    
    Also, when adding a bunch of LMBs, a message is displayed in the console per LMB
    like these ones:
      pseries-hotplug-mem: Memory at 7e0000000 (drc index 8000007e) was hot-added
      pseries-hotplug-mem: Memory at 7f0000000 (drc index 8000007f) was hot-added
      pseries-hotplug-mem: Memory at 800000000 (drc index 80000080) was hot-added
      pseries-hotplug-mem: Memory at 810000000 (drc index 80000081) was hot-added
    
    When adding 1TB of memory and LMB size is 256MB, this leads to 4096
    messages to be displayed on the console. These messages are not really
    helpful for the end user, so moving them to the DEBUG level.
    
    Signed-off-by: Laurent Dufour <ldufour@xxxxxxxxxxxxx>
    [mpe: Tweak change log wording]
    Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
    Link: https://lore.kernel.org/r/20201211145954.90143-1-ldufour@xxxxxxxxxxxxx
    Stable-dep-of: bd68ffce69f6 ("powerpc/pseries/memhp: Fix access beyond end of drmem array")
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/arch/powerpc/platforms/pseries/hotplug-memory.c b/arch/powerpc/platforms/pseries/hotplug-memory.c
index a5f968b5fa3a..0e602c3b01ea 100644
--- a/arch/powerpc/platforms/pseries/hotplug-memory.c
+++ b/arch/powerpc/platforms/pseries/hotplug-memory.c
@@ -481,7 +481,7 @@ static int dlpar_memory_remove_by_index(u32 drc_index)
 	int lmb_found;
 	int rc;
 
-	pr_info("Attempting to hot-remove LMB, drc index %x\n", drc_index);
+	pr_debug("Attempting to hot-remove LMB, drc index %x\n", drc_index);
 
 	lmb_found = 0;
 	for_each_drmem_lmb(lmb) {
@@ -499,10 +499,10 @@ static int dlpar_memory_remove_by_index(u32 drc_index)
 		rc = -EINVAL;
 
 	if (rc)
-		pr_info("Failed to hot-remove memory at %llx\n",
-			lmb->base_addr);
+		pr_debug("Failed to hot-remove memory at %llx\n",
+			 lmb->base_addr);
 	else
-		pr_info("Memory at %llx was hot-removed\n", lmb->base_addr);
+		pr_debug("Memory at %llx was hot-removed\n", lmb->base_addr);
 
 	return rc;
 }
@@ -719,8 +719,8 @@ static int dlpar_memory_add_by_count(u32 lmbs_to_add)
 			if (!drmem_lmb_reserved(lmb))
 				continue;
 
-			pr_info("Memory at %llx (drc index %x) was hot-added\n",
-				lmb->base_addr, lmb->drc_index);
+			pr_debug("Memory at %llx (drc index %x) was hot-added\n",
+				 lmb->base_addr, lmb->drc_index);
 			drmem_remove_lmb_reservation(lmb);
 		}
 		rc = 0;




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