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From: John Baldwin <jhb@FreeBSD.org>
Date: Fri, 6 Dec 2019 19:20:45 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
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Subject: svn commit: r355459 - head/sys/sys
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X-List-Received-Date: Fri, 06 Dec 2019 19:20:46 -0000
Author: jhb
Date: Fri Dec 6 19:20:45 2019
New Revision: 355459
URL: https://svnweb.freebsd.org/changeset/base/355459
Log:
Remove SPARE_USRSPACE.
This constant was used to reserve space at the top of the stack to
hold translated system call arguments for non-default ABIs (the
"stackgap"). However, none of the compatibility ABIs have used the
stackgap in many years and the last use of SPARE_USRSPACE was removed
in r355373.
Reviewed by: kib
Sponsored by: DARPA
Differential Revision: https://reviews.freebsd.org/D22697
Modified:
head/sys/sys/exec.h
Modified: head/sys/sys/exec.h
==============================================================================
--- head/sys/sys/exec.h Fri Dec 6 18:51:16 2019 (r355458)
+++ head/sys/sys/exec.h Fri Dec 6 19:20:45 2019 (r355459)
@@ -77,7 +77,6 @@ struct execsw {
* Prefer the kern.ps_strings or kern.proc.ps_strings sysctls to this constant.
*/
#define PS_STRINGS (USRSTACK - sizeof(struct ps_strings))
-#define SPARE_USRSPACE 4096
int exec_map_first_page(struct image_params *);
void exec_unmap_first_page(struct image_params *);