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Message-Id: <20240904030751.117579-12-rick.p.edgecombe@intel.com>
Date: Tue, 3 Sep 2024 20:07:41 -0700
From: Rick Edgecombe <rick.p.edgecombe@...el.com>
To: seanjc@...gle.com,
pbonzini@...hat.com,
kvm@...r.kernel.org
Cc: kai.huang@...el.com,
dmatlack@...gle.com,
isaku.yamahata@...il.com,
yan.y.zhao@...el.com,
nik.borisov@...e.com,
rick.p.edgecombe@...el.com,
linux-kernel@...r.kernel.org
Subject: [PATCH 11/21] KVM: x86/mmu: Add setter for shadow_mmio_value
From: Isaku Yamahata <isaku.yamahata@...el.com>
Future changes will want to set shadow_mmio_value from TDX code. Add a
helper to setter with a name that makes more sense from that context.
Signed-off-by: Isaku Yamahata <isaku.yamahata@...el.com>
[split into new patch]
Signed-off-by: Rick Edgecombe <rick.p.edgecombe@...el.com>
---
TDX MMU part 2 v1:
- Split into new patch
---
arch/x86/kvm/mmu.h | 1 +
arch/x86/kvm/mmu/spte.c | 6 ++++++
2 files changed, 7 insertions(+)
diff --git a/arch/x86/kvm/mmu.h b/arch/x86/kvm/mmu.h
index 5faa416ac874..72035154a23a 100644
--- a/arch/x86/kvm/mmu.h
+++ b/arch/x86/kvm/mmu.h
@@ -78,6 +78,7 @@ static inline gfn_t kvm_mmu_max_gfn(void)
u8 kvm_mmu_get_max_tdp_level(void);
void kvm_mmu_set_mmio_spte_mask(u64 mmio_value, u64 mmio_mask, u64 access_mask);
+void kvm_mmu_set_mmio_spte_value(struct kvm *kvm, u64 mmio_value);
void kvm_mmu_set_me_spte_mask(u64 me_value, u64 me_mask);
void kvm_mmu_set_ept_masks(bool has_ad_bits, bool has_exec_only);
diff --git a/arch/x86/kvm/mmu/spte.c b/arch/x86/kvm/mmu/spte.c
index d4527965e48c..46a26be0245b 100644
--- a/arch/x86/kvm/mmu/spte.c
+++ b/arch/x86/kvm/mmu/spte.c
@@ -409,6 +409,12 @@ void kvm_mmu_set_mmio_spte_mask(u64 mmio_value, u64 mmio_mask, u64 access_mask)
}
EXPORT_SYMBOL_GPL(kvm_mmu_set_mmio_spte_mask);
+void kvm_mmu_set_mmio_spte_value(struct kvm *kvm, u64 mmio_value)
+{
+ kvm->arch.shadow_mmio_value = mmio_value;
+}
+EXPORT_SYMBOL_GPL(kvm_mmu_set_mmio_spte_value);
+
void kvm_mmu_set_me_spte_mask(u64 me_value, u64 me_mask)
{
/* shadow_me_value must be a subset of shadow_me_mask */
--
2.34.1
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