diff options
| author | Ryan Grimm <grimm@linux.vnet.ibm.com> | 2019-08-19 23:13:21 -0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2019-08-30 09:55:41 +1000 |
| commit | 734560ac39aeb2516419c5878856df011f794a74 (patch) | |
| tree | e1a92b157035854c3787daf73e71e302bc60efda /net/lapb/lapb_subr.c | |
| parent | 256ba2c1689efd4f5383cf7ebe2f9970c198b79d (diff) | |
powerpc/pseries/svm: Export guest SVM status to user space via sysfs
User space might want to know it's running in a secure VM. It can't do
a mfmsr because mfmsr is a privileged instruction.
The solution here is to create a cpu attribute:
/sys/devices/system/cpu/svm
which will read 0 or 1 based on the S bit of the current CPU.
Signed-off-by: Ryan Grimm <grimm@linux.vnet.ibm.com>
Signed-off-by: Thiago Jung Bauermann <bauerman@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20190820021326.6884-12-bauerman@linux.ibm.com
Diffstat (limited to 'net/lapb/lapb_subr.c')
0 files changed, 0 insertions, 0 deletions