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| author | Marc Zyngier <marc.zyngier@arm.com> | 2019-01-19 15:29:54 +0000 |
|---|---|---|
| committer | Marc Zyngier <marc.zyngier@arm.com> | 2019-02-19 21:05:35 +0000 |
| commit | 32f139551954512bfdf9d558341af453bb8b12b4 (patch) | |
| tree | d7fc878ae67aab3ab2300b3ca72e51f03ff3482b /mm/mprotect.c | |
| parent | d18232ea8a9480606c53e91d7e2d062c3c151815 (diff) | |
| download | linux-stable-32f139551954512bfdf9d558341af453bb8b12b4.tar.gz linux-stable-32f139551954512bfdf9d558341af453bb8b12b4.tar.bz2 linux-stable-32f139551954512bfdf9d558341af453bb8b12b4.zip | |
arm/arm64: KVM: Statically configure the host's view of MPIDR
We currently eagerly save/restore MPIDR. It turns out to be
slightly pointless:
- On the host, this value is known as soon as we're scheduled on a
physical CPU
- In the guest, this value cannot change, as it is set by KVM
(and this is a read-only register)
The result of the above is that we can perfectly avoid the eager
saving of MPIDR_EL1, and only keep the restore. We just have
to setup the host contexts appropriately at boot time.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Acked-by: Christoffer Dall <christoffer.dall@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@arm.com>
Diffstat (limited to 'mm/mprotect.c')
0 files changed, 0 insertions, 0 deletions