This is a note to let you know that I've just added the patch titled
powerpc/xive: Fix endian conversion size
to the 6.1-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-xive-fix-endian-conversion-size.patch
and it can be found in the queue-6.1 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 2880750159eb4fc3170bffb25b31d84cf1c310c2
Author: Benjamin Gray <bgray@xxxxxxxxxxxxx>
Date: Wed Oct 11 16:37:00 2023 +1100
powerpc/xive: Fix endian conversion size
[ Upstream commit ff7a60ab1e065257a0e467c13b519f4debcd7fcf ]
Sparse reports a size mismatch in the endian swap. The Opal
implementation[1] passes the value as a __be64, and the receiving
variable out_qsize is a u64, so the use of be32_to_cpu() appears to be
an error.
[1]: https://github.com/open-power/skiboot/blob/80e2b1dc73/hw/xive.c#L3854
Fixes: 88ec6b93c8e7 ("powerpc/xive: add OPAL extensions for the XIVE native exploitation support")
Signed-off-by: Benjamin Gray <bgray@xxxxxxxxxxxxx>
Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Link: https://msgid.link/20231011053711.93427-2-bgray@xxxxxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/arch/powerpc/sysdev/xive/native.c b/arch/powerpc/sysdev/xive/native.c
index 3925825954bcc..e5baa91ddd07b 100644
--- a/arch/powerpc/sysdev/xive/native.c
+++ b/arch/powerpc/sysdev/xive/native.c
@@ -804,7 +804,7 @@ int xive_native_get_queue_info(u32 vp_id, u32 prio,
if (out_qpage)
*out_qpage = be64_to_cpu(qpage);
if (out_qsize)
- *out_qsize = be32_to_cpu(qsize);
+ *out_qsize = be64_to_cpu(qsize);
if (out_qeoi_page)
*out_qeoi_page = be64_to_cpu(qeoi_page);
if (out_escalate_irq)
