[RFC PATCH v1 3/5] KVM: arm64: Support usage of TTRem in guest stage-2 translation
From: Yanan Wang <hidden>
Date: 2021-01-26 13:44:56
Also in:
kvm, 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
As TTrem can be used when coalesce existing table mappings into a block in guest stage-2 translation, so just support usage of it. Signed-off-by: Yanan Wang <redacted> --- arch/arm64/kvm/hyp/pgtable.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/arch/arm64/kvm/hyp/pgtable.c b/arch/arm64/kvm/hyp/pgtable.c
index 4d177ce1d536..c8b959e3951b 100644
--- a/arch/arm64/kvm/hyp/pgtable.c
+++ b/arch/arm64/kvm/hyp/pgtable.c@@ -437,6 +437,7 @@ struct stage2_map_data { struct kvm_s2_mmu *mmu; struct kvm_mmu_memory_cache *memcache; + u32 ttrem_level; }; static int stage2_map_set_prot_attr(enum kvm_pgtable_prot prot,
@@ -633,6 +634,7 @@ int kvm_pgtable_stage2_map(struct kvm_pgtable *pgt, u64 addr, u64 size, .phys = ALIGN_DOWN(phys, PAGE_SIZE), .mmu = pgt->mmu, .memcache = mc, + .ttrem_level = system_support_level_of_ttrem(), }; struct kvm_pgtable_walker walker = { .cb = stage2_map_walker,
--
2.19.1
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel