Author: kib
Date: Mon Jul 2 07:58:57 2018
New Revision: 335857
URL: https://svnweb.freebsd.org/changeset/base/335857
Log:
MFC r335635:
Do not leave stray qword on top of stack for interrupts and exceptions
without error code. Doing so it mis-aligned the stack.
PR: 229222
Modified:
stable/11/sys/amd64/include/asmacros.h
Directory Properties:
stable/11/ (props changed)
Modified: stable/11/sys/amd64/include/asmacros.h
==============================================================================
--- stable/11/sys/amd64/include/asmacros.h Mon Jul 2 05:19:44 2018
(r335856)
+++ stable/11/sys/amd64/include/asmacros.h Mon Jul 2 07:58:57 2018
(r335857)
@@ -185,7 +185,7 @@
movq PCPU(KCR3),%rax
movq %rax,%cr3
movq PCPU(RSP0),%rax
- subq $PTI_SIZE,%rax
+ subq $PTI_SIZE - 8 * (1 - \has_err),%rax
MOVE_STACKS ((PTI_SIZE / 8) - 1 + \has_err)
movq %rax,%rsp
popq %rdx
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