diff options
| author | Brijesh Singh <[email protected]> | 2017-10-20 09:30:57 -0500 |
|---|---|---|
| committer | Thomas Gleixner <[email protected]> | 2017-11-07 15:35:59 +0100 |
| commit | ac26963a1175c813e3ed21c0d2435b083173136e (patch) | |
| tree | 0142c85cd9037d5d790a10d78588409558f26b96 /net/unix/sysctl_net_unix.c | |
| parent | dfaaec9033b80d71056e21cda920752e55f2c514 (diff) | |
percpu: Introduce DEFINE_PER_CPU_DECRYPTED
KVM guest defines three per-CPU variables (steal-time, apf_reason, and
kvm_pic_eoi) which are shared between a guest and a hypervisor.
When SEV is active, memory is encrypted with a guest-specific key, and if
the guest OS wants to share the memory region with the hypervisor then it
must clear the C-bit (i.e set decrypted) before sharing it.
DEFINE_PER_CPU_DECRYPTED can be used to define the per-CPU variables
which will be shared between a guest and a hypervisor.
Signed-off-by: Brijesh Singh <[email protected]>
Signed-off-by: Thomas Gleixner <[email protected]>
Tested-by: Borislav Petkov <[email protected]>
Acked-by: Tejun Heo <[email protected]>
Reviewed-by: Borislav Petkov <[email protected]>
Cc: [email protected]
Cc: Tom Lendacky <[email protected]>
Cc: [email protected]
Cc: Arnd Bergmann <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: Christoph Lameter <[email protected]>
Link: https://lkml.kernel.org/r/[email protected]
Diffstat (limited to 'net/unix/sysctl_net_unix.c')
0 files changed, 0 insertions, 0 deletions