Author: kib
Date: Wed Mar 16 17:01:24 2016
New Revision: 296945
URL: https://svnweb.freebsd.org/changeset/base/296945
Log:
MFC r296908:
Force the desired alignment of the user save area.
Approved by: re (marius)
Modified:
releng/10.3/sys/amd64/amd64/vm_machdep.c
releng/10.3/sys/i386/i386/vm_machdep.c
Directory Properties:
releng/10.3/ (props changed)
Modified: releng/10.3/sys/amd64/amd64/vm_machdep.c
==============================================================================
--- releng/10.3/sys/amd64/amd64/vm_machdep.c Wed Mar 16 16:56:28 2016
(r296944)
+++ releng/10.3/sys/amd64/amd64/vm_machdep.c Wed Mar 16 17:01:24 2016
(r296945)
@@ -100,8 +100,8 @@ get_pcb_user_save_td(struct thread *td)
vm_offset_t p;
p = td->td_kstack + td->td_kstack_pages * PAGE_SIZE -
- cpu_max_ext_state_size;
- KASSERT((p % 64) == 0, ("Unaligned pcb_user_save area"));
+ roundup2(cpu_max_ext_state_size, XSAVE_AREA_ALIGN);
+ KASSERT((p % XSAVE_AREA_ALIGN) == 0, ("Unaligned pcb_user_save area"));
return ((struct savefpu *)p);
}
@@ -120,7 +120,8 @@ get_pcb_td(struct thread *td)
vm_offset_t p;
p = td->td_kstack + td->td_kstack_pages * PAGE_SIZE -
- cpu_max_ext_state_size - sizeof(struct pcb);
+ roundup2(cpu_max_ext_state_size, XSAVE_AREA_ALIGN) -
+ sizeof(struct pcb);
return ((struct pcb *)p);
}
Modified: releng/10.3/sys/i386/i386/vm_machdep.c
==============================================================================
--- releng/10.3/sys/i386/i386/vm_machdep.c Wed Mar 16 16:56:28 2016
(r296944)
+++ releng/10.3/sys/i386/i386/vm_machdep.c Wed Mar 16 17:01:24 2016
(r296945)
@@ -159,8 +159,8 @@ get_pcb_user_save_td(struct thread *td)
{
vm_offset_t p;
p = td->td_kstack + td->td_kstack_pages * PAGE_SIZE -
- cpu_max_ext_state_size;
- KASSERT((p % 64) == 0, ("Unaligned pcb_user_save area"));
+ roundup2(cpu_max_ext_state_size, XSAVE_AREA_ALIGN);
+ KASSERT((p % XSAVE_AREA_ALIGN) == 0, ("Unaligned pcb_user_save area"));
return ((union savefpu *)p);
}
@@ -179,7 +179,8 @@ get_pcb_td(struct thread *td)
vm_offset_t p;
p = td->td_kstack + td->td_kstack_pages * PAGE_SIZE -
- cpu_max_ext_state_size - sizeof(struct pcb);
+ roundup2(cpu_max_ext_state_size, XSAVE_AREA_ALIGN) -
+ sizeof(struct pcb);
return ((struct pcb *)p);
}
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