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authorDavid Brazdil <dbrazdil@google.com>2020-12-02 21:41:09 +0300
committerMarc Zyngier <maz@kernel.org>2020-12-04 13:08:34 +0300
commit687413d34d4aa72103de3e545f431f480dd21d7f (patch)
tree5c5c5f2bc574130b660bcfde236eb85bf1aa5184 /arch/arm64/kernel/image-vars.h
parent2d7bf218ca739554bf7277ab0dbfa5399d01f7c6 (diff)
downloadlinux-687413d34d4aa72103de3e545f431f480dd21d7f.tar.xz
KVM: arm64: Support per_cpu_ptr in nVHE hyp code
When compiling with __KVM_NVHE_HYPERVISOR__, redefine per_cpu_offset() to __hyp_per_cpu_offset() which looks up the base of the nVHE per-CPU region of the given cpu and computes its offset from the .hyp.data..percpu section. This enables use of per_cpu_ptr() helpers in nVHE hyp code. Until now only this_cpu_ptr() was supported by setting TPIDR_EL2. Signed-off-by: David Brazdil <dbrazdil@google.com> Signed-off-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20201202184122.26046-14-dbrazdil@google.com
Diffstat (limited to 'arch/arm64/kernel/image-vars.h')
-rw-r--r--arch/arm64/kernel/image-vars.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/arm64/kernel/image-vars.h b/arch/arm64/kernel/image-vars.h
index 08e69faedf6c..39289d75118d 100644
--- a/arch/arm64/kernel/image-vars.h
+++ b/arch/arm64/kernel/image-vars.h
@@ -99,6 +99,9 @@ KVM_NVHE_ALIAS(gic_nonsecure_priorities);
KVM_NVHE_ALIAS(__start___kvm_ex_table);
KVM_NVHE_ALIAS(__stop___kvm_ex_table);
+/* Array containing bases of nVHE per-CPU memory regions. */
+KVM_NVHE_ALIAS(kvm_arm_hyp_percpu_base);
+
#endif /* CONFIG_KVM */
#endif /* __ARM64_KERNEL_IMAGE_VARS_H */