[PATCH 7.2.y 2/5] KVM: x86: Move get_segment_base() to regs.h, as kvm_get_segment_base()

[Sasha Levin <sashal@kernel.org>]

From: Sean Christopherson <seanjc@google.com>

[ Upstream commit 0217de73439caf56db74da95b3bbad8c1cb066c4 ]

Move get_segment_base() to regs.h, as kvm_get_segment_base(), so that the
bulk of the register code can be moved from x86.c to a new regs.c, without
simultaneously needing to rename "public" helpers to explicitly scope them
to KVM.

No functional change intended.

Cc: Yosry Ahmed <yosry@kernel.org>
Signed-off-by: Sean Christopherson <seanjc@google.com>
Reviewed-by: Kai Huang <kai.huang@intel.com>
Reviewed-by: Binbin Wu <binbin.wu@linux.intel.com>
Message-ID: <20260613000329.732085-3-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Stable-dep-of: 184bd464bdb6 ("KVM: x86: Check EFER validity on KVM_SET_SREGS*")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/x86/kvm/regs.h | 5 +++++
 arch/x86/kvm/x86.c  | 9 ++-------
 2 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/arch/x86/kvm/regs.h b/arch/x86/kvm/regs.h
index 5bda738afb7ca..b17ab0d65ee7d 100644
--- a/arch/x86/kvm/regs.h
+++ b/arch/x86/kvm/regs.h
@@ -420,4 +420,9 @@ static inline bool is_guest_mode(struct kvm_vcpu *vcpu)
 	return vcpu->arch.hflags & HF_GUEST_MASK;
 }
 
+static inline unsigned long kvm_get_segment_base(struct kvm_vcpu *vcpu, int seg)
+{
+	return kvm_x86_call(get_segment_base)(vcpu, seg);
+}
+
 #endif
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 734ef633d24e3..955e341745f02 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -8492,11 +8492,6 @@ static int emulator_pio_out_emulated(struct x86_emulate_ctxt *ctxt,
 	return emulator_pio_out(emul_to_vcpu(ctxt), size, port, val, count);
 }
 
-static unsigned long get_segment_base(struct kvm_vcpu *vcpu, int seg)
-{
-	return kvm_x86_call(get_segment_base)(vcpu, seg);
-}
-
 static void emulator_invlpg(struct x86_emulate_ctxt *ctxt, ulong address)
 {
 	kvm_mmu_invlpg(emul_to_vcpu(ctxt), address);
@@ -8641,7 +8636,7 @@ static void emulator_set_idt(struct x86_emulate_ctxt *ctxt, struct desc_ptr *dt)
 static unsigned long emulator_get_cached_segment_base(
 	struct x86_emulate_ctxt *ctxt, int seg)
 {
-	return get_segment_base(emul_to_vcpu(ctxt), seg);
+	return kvm_get_segment_base(emul_to_vcpu(ctxt), seg);
 }
 
 static bool emulator_get_segment(struct x86_emulate_ctxt *ctxt, u16 *selector,
@@ -13843,7 +13838,7 @@ unsigned long kvm_get_linear_rip(struct kvm_vcpu *vcpu)
 
 	if (is_64_bit_mode(vcpu))
 		return kvm_rip_read(vcpu);
-	return (u32)(get_segment_base(vcpu, VCPU_SREG_CS) +
+	return (u32)(kvm_get_segment_base(vcpu, VCPU_SREG_CS) +
 		     kvm_rip_read(vcpu));
 }
 EXPORT_SYMBOL_FOR_KVM_INTERNAL(kvm_get_linear_rip);
-- 
2.53.0