Why do the following two APIs are not exported by Xen's Kernel?
void use_mm(struct mm_struct *mm);
void unuse_mm(struct mm_struct *mm);
Running "grep __ksymtab_use_mm /proc/kallsyms" doesn't return anything.
I need to use these APIs on Xen. Is there any alternate methods available on XenServer with 2.6.32 kernel?
Note: I can see that these APIs are exported on RHEL 6.2 with 2.6.32 Kernel:
-bash-4.1# uname -a
Linux d 2.6.32-220.el6.x86_64 #1 SMP Wed Nov 9 08:03:13 EST 2011 x86_64 x86_64 x86_64 GNU/Linux
-bash-4.1# grep __ksymtab_use_mm /proc/kallsyms
ffffffff8181a830 r __ksymtab_use_mm
I had asked same question on Xen forums as well. Here is the summary:
These API functions were exported by 5da779c3 ("mm: export use_mm/unuse_mm to modules") added in 2.6.34. The current XenServer kernel is based on 2.6.32 and is therefore not new enough to have this change.
XenServer will be moving to a 3.x dom0 kernel in the next major release.