Date: Mon, 2 Jul 2018 07:58:57 +0000 (UTC) From: Konstantin Belousov <kib@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org Subject: svn commit: r335857 - stable/11/sys/amd64/include Message-ID: <201807020758.w627wvqM051048@repo.freebsd.org>
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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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