This is a note to let you know that I've just added the patch titled pseries: Fix 64 bit logical memory block panic to the 5.7-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: pseries-fix-64-bit-logical-memory-block-panic.patch and it can be found in the queue-5.7 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 89c140bbaeee7a55ed0360a88f294ead2b95201b Mon Sep 17 00:00:00 2001 From: Anton Blanchard <anton@xxxxxxxxxx> Date: Wed, 15 Jul 2020 10:08:20 +1000 Subject: pseries: Fix 64 bit logical memory block panic From: Anton Blanchard <anton@xxxxxxxxxx> commit 89c140bbaeee7a55ed0360a88f294ead2b95201b upstream. Booting with a 4GB LMB size causes us to panic: qemu-system-ppc64: OS terminated: OS panic: Memory block size not suitable: 0x0 Fix pseries_memory_block_size() to handle 64 bit LMBs. Cc: stable@xxxxxxxxxxxxxxx Signed-off-by: Anton Blanchard <anton@xxxxxxxxxx> Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx> Link: https://lore.kernel.org/r/20200715000820.1255764-1-anton@xxxxxxxxxx Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- arch/powerpc/platforms/pseries/hotplug-memory.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/arch/powerpc/platforms/pseries/hotplug-memory.c +++ b/arch/powerpc/platforms/pseries/hotplug-memory.c @@ -27,7 +27,7 @@ static bool rtas_hp_event; unsigned long pseries_memory_block_size(void) { struct device_node *np; - unsigned int memblock_size = MIN_MEMORY_BLOCK_SIZE; + u64 memblock_size = MIN_MEMORY_BLOCK_SIZE; struct resource r; np = of_find_node_by_path("/ibm,dynamic-reconfiguration-memory"); Patches currently in stable-queue which might be from anton@xxxxxxxxxx are queue-5.7/pseries-fix-64-bit-logical-memory-block-panic.patch