Patch "parisc: Reduce thread stack to 16 kb" has been added to the 4.14-stable tree

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

parisc: Reduce thread stack to 16 kb

to the 4.14-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:
parisc-reduce-thread-stack-to-16-kb.patch
and it can be found in the queue-4.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: John David Anglin <[email protected]>
Date: Mon, 13 Nov 2017 19:35:33 -0500
Subject: parisc: Reduce thread stack to 16 kb

From: John David Anglin <[email protected]>

[ Upstream commit da57c5414f49ef9e4bcb9ae0bbafd1d650b31411 ]

In testing, I found that the thread stack can be 16 kB when using an irq stack. Without it, the thread stack needs to be 32 kB. Currently, the irq stack is 32 kB. While it probably could be 16 kB, I would prefer to leave it as is for safety.

---
 arch/parisc/include/asm/thread_info.h |    5 +++++
 1 file changed, 5 insertions(+)

@@ -35,7 +35,12 @@ struct thread_info {
 
 /* thread information allocation */
 
+#ifdef CONFIG_IRQSTACKS
+#define THREAD_SIZE_ORDER	2 /* PA-RISC requires at least 16k stack */
+#else
 #define THREAD_SIZE_ORDER	3 /* PA-RISC requires at least 32k stack */
+#endif
+
 /* Be sure to hunt all references to this down when you change the size of
  * the kernel stack */
 #define THREAD_SIZE             (PAGE_SIZE << THREAD_SIZE_ORDER)

Patches currently in stable-queue which might be from [email protected] are

queue-4.14/parisc-reduce-thread-stack-to-16-kb.patch