git: 202aea9c82ea - main - arm: tune vmparam.h towards a little more modern

[Kyle Evans]

The branch main has been updated by kevans:

URL: https://cgit.FreeBSD.org/src/commit/?id=202aea9c82eaab1c73351d4e971347c4109ef59b

commit 202aea9c82eaab1c73351d4e971347c4109ef59b
Author:     Kyle Evans <kevans at FreeBSD.org>
AuthorDate: 2020-12-31 17:12:39 +0000
Commit:     Kyle Evans <kevans at FreeBSD.org>
CommitDate: 2020-12-31 17:13:13 +0000

    arm: tune vmparam.h towards a little more modern
    
    An 8MB max stack size is quite limiting in today's world, and in-fact is
    the *default* stack size for almost every other arch (including mips).
    
    Raise the default to 4MB (should be pretty reasonable) and the max to 64MB.
    NetBSD made a similar move back in 2015 and raised MAXDSIZ to 1856 at the
    same time, so let's just roll that in as well. They later lowered it, but
    eventually raised it back to 1856 in order to build rust.
    
    This was noticed while looking at qemu-bsd-user's default stack sizes and
    growth behavior (or lack thereof).
    
    Reviewed by:    ian
    Differential Revision:  https://reviews.freebsd.org/D27218
---
 sys/arm/include/vmparam.h | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/sys/arm/include/vmparam.h b/sys/arm/include/vmparam.h
index 2fa2c59305cb..d37a81ae6212 100644
--- a/sys/arm/include/vmparam.h
+++ b/sys/arm/include/vmparam.h
@@ -50,13 +50,13 @@
 #define	DFLDSIZ		(128UL*1024*1024)	/* initial data size limit */
 #endif
 #ifndef	MAXDSIZ
-#define	MAXDSIZ		(512UL*1024*1024)	/* max data size */
+#define	MAXDSIZ		(1856UL*1024*1024)	/* max data size */
 #endif
 #ifndef	DFLSSIZ
-#define	DFLSSIZ		(2UL*1024*1024)		/* initial stack size limit */
+#define	DFLSSIZ		(4UL*1024*1024)		/* initial stack size limit */
 #endif
 #ifndef	MAXSSIZ
-#define	MAXSSIZ		(8UL*1024*1024)		/* max stack size */
+#define	MAXSSIZ		(64UL*1024*1024)	/* max stack size */
 #endif
 #ifndef	SGROWSIZ
 #define	SGROWSIZ	(128UL*1024)		/* amount to grow stack */