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| author | Marc Zyngier | 2017-10-23 18:11:17 +0200 |
|---|---|---|
| committer | Christoffer Dall | 2018-01-08 15:20:44 +0100 |
| commit | 91c703e0382a1212d249adf34af4943a5da90d54 (patch) | |
| tree | 5d5437a832c0ad19fed6306200a64bcf393b6eaa /arch/arm/include/asm/kvm_hyp.h | |
| parent | arm64: KVM: Add invalidate_icache_range helper (diff) | |
| download | kernel-qcow2-linux-91c703e0382a1212d249adf34af4943a5da90d54.tar.gz kernel-qcow2-linux-91c703e0382a1212d249adf34af4943a5da90d54.tar.xz kernel-qcow2-linux-91c703e0382a1212d249adf34af4943a5da90d54.zip | |
arm: KVM: Add optimized PIPT icache flushing
Calling __cpuc_coherent_user_range to invalidate the icache on
a PIPT icache machine has some pointless overhead, as it starts
by cleaning the dcache to the PoU, while we're guaranteed to
have already cleaned it to the PoC.
As KVM is the only user of such a feature, let's implement some
ad-hoc cache flushing in kvm_mmu.h. Should it become useful to
other subsystems, it can be moved to a more global location.
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Diffstat (limited to 'arch/arm/include/asm/kvm_hyp.h')
| -rw-r--r-- | arch/arm/include/asm/kvm_hyp.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm/include/asm/kvm_hyp.h b/arch/arm/include/asm/kvm_hyp.h index 76368de7237b..1ab8329e9ff7 100644 --- a/arch/arm/include/asm/kvm_hyp.h +++ b/arch/arm/include/asm/kvm_hyp.h @@ -68,6 +68,8 @@ #define HIFAR __ACCESS_CP15(c6, 4, c0, 2) #define HPFAR __ACCESS_CP15(c6, 4, c0, 4) #define ICIALLUIS __ACCESS_CP15(c7, 0, c1, 0) +#define BPIALLIS __ACCESS_CP15(c7, 0, c1, 6) +#define ICIMVAU __ACCESS_CP15(c7, 0, c5, 1) #define ATS1CPR __ACCESS_CP15(c7, 0, c8, 0) #define TLBIALLIS __ACCESS_CP15(c8, 0, c3, 0) #define TLBIALL __ACCESS_CP15(c8, 0, c7, 0) |