[PATCH v4 10/10] kvm: arm64: Remove unnecessary hyp mappings
From: David Brazdil <hidden>
Date: 2020-09-22 20:49:37
Also in:
kvmarm, lkml
Subsystem:
arm64 port (aarch64 architecture), kernel virtual machine for arm64 (kvm/arm64), the rest · Maintainers:
Catalin Marinas, Will Deacon, Marc Zyngier, Oliver Upton, Linus Torvalds
With all nVHE per-CPU variables being part of the hyp per-CPU region, mapping them individual is not necessary any longer. They are mapped to hyp as part of the overall per-CPU region. Acked-by: Andrew Scull<redacted> Signed-off-by: David Brazdil <redacted> --- arch/arm64/include/asm/kvm_mmu.h | 20 -------------------- arch/arm64/kvm/arm.c | 16 ---------------- 2 files changed, 36 deletions(-)
diff --git a/arch/arm64/include/asm/kvm_mmu.h b/arch/arm64/include/asm/kvm_mmu.h
index e134c2ba2c5d..8e7919801196 100644
--- a/arch/arm64/include/asm/kvm_mmu.h
+++ b/arch/arm64/include/asm/kvm_mmu.h@@ -531,21 +531,6 @@ static inline int kvm_map_vectors(void) DECLARE_PER_CPU_READ_MOSTLY(u64, arm64_ssbd_callback_required); DECLARE_KVM_NVHE_PER_CPU(u64, arm64_ssbd_callback_required); -static inline int hyp_map_aux_data(void) -{ - int cpu, err; - - for_each_possible_cpu(cpu) { - u64 *ptr; - - ptr = per_cpu_ptr_nvhe_sym(arm64_ssbd_callback_required, cpu); - err = create_hyp_mappings(ptr, ptr + 1, PAGE_HYP); - if (err) - return err; - } - return 0; -} - static inline void hyp_init_aux_data(void) { u64 *ptr;
@@ -555,11 +540,6 @@ static inline void hyp_init_aux_data(void) *ptr = __this_cpu_read(arm64_ssbd_callback_required); } #else -static inline int hyp_map_aux_data(void) -{ - return 0; -} - static inline void hyp_init_aux_data(void) {} #endif
diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c
index cd5293e55fec..22ec7176f95b 100644
--- a/arch/arm64/kvm/arm.c
+++ b/arch/arm64/kvm/arm.c@@ -1591,22 +1591,6 @@ static int init_hyp_mode(void) } } - for_each_possible_cpu(cpu) { - kvm_host_data_t *cpu_data; - - cpu_data = per_cpu_ptr_hyp_sym(kvm_host_data, cpu); - err = create_hyp_mappings(cpu_data, cpu_data + 1, PAGE_HYP); - - if (err) { - kvm_err("Cannot map host CPU state: %d\n", err); - goto out_err; - } - } - - err = hyp_map_aux_data(); - if (err) - kvm_err("Cannot map host auxiliary data: %d\n", err); - return 0; out_err:
--
2.28.0.681.g6f77f65b4e-goog
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