From: Mario Smarduch <m.smarduch@samsung.com>
To: "kvmarm@lists.cs.columbia.edu" <kvmarm@lists.cs.columbia.edu>,
Marc Zyngier <marc.zyngier@arm.com>,
"christoffer.dall@linaro.org" <christoffer.dall@linaro.org>
Cc: 이정석 <jays.lee@samsung.com>, 정성진 <sungjinn.chung@samsung.com>,
gavin.guo@canonical.com,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>
Subject: [PATCH v3 1/4] add ARMv7 HYP API to flush VM TLBs without address param
Date: Tue, 22 Apr 2014 16:17:49 -0700 [thread overview]
Message-ID: <5356F89D.3020707@samsung.com> (raw)
Add HYP interface for global VM TLB invalidation without address
parameter.
- Added ARM version of kvm_flush_remote_tlbs()
Signed-off-by: Mario Smarduch <m.smarduch@samsung.com>
---
arch/arm/include/asm/kvm_asm.h | 1 +
arch/arm/include/asm/kvm_host.h | 2 ++
arch/arm/kvm/interrupts.S | 5 +++++
arch/arm/kvm/mmu.c | 10 ++++++++++
4 files changed, 18 insertions(+)
diff --git a/arch/arm/include/asm/kvm_asm.h b/arch/arm/include/asm/kvm_asm.h
index 661da11..0eeaca1 100644
--- a/arch/arm/include/asm/kvm_asm.h
+++ b/arch/arm/include/asm/kvm_asm.h
@@ -76,6 +76,7 @@ extern char __kvm_hyp_code_end[];
extern void __kvm_flush_vm_context(void);
extern void __kvm_tlb_flush_vmid_ipa(struct kvm *kvm, phys_addr_t ipa);
+extern void __kvm_tlb_flush_vmid(struct kvm *kvm);
extern int __kvm_vcpu_run(struct kvm_vcpu *vcpu);
#endif
diff --git a/arch/arm/include/asm/kvm_host.h b/arch/arm/include/asm/kvm_host.h
index 098f7dd..1e739f9 100644
--- a/arch/arm/include/asm/kvm_host.h
+++ b/arch/arm/include/asm/kvm_host.h
@@ -228,4 +228,6 @@ int kvm_perf_teardown(void);
u64 kvm_arm_timer_get_reg(struct kvm_vcpu *, u64 regid);
int kvm_arm_timer_set_reg(struct kvm_vcpu *, u64 regid, u64 value);
+void kvm_tlb_flush_vmid(struct kvm *kvm);
+
#endif /* __ARM_KVM_HOST_H__ */
diff --git a/arch/arm/kvm/interrupts.S b/arch/arm/kvm/interrupts.S
index 0d68d40..8620280 100644
--- a/arch/arm/kvm/interrupts.S
+++ b/arch/arm/kvm/interrupts.S
@@ -45,8 +45,12 @@ __kvm_hyp_code_start:
*
* As v7 does not support flushing per IPA, just nuke the whole TLB
* instead, ignoring the ipa value.
+ *
+ * void __kvm_tlb_flush_vm(struct kvm *kvm) - alias on ARMv7 for global VM TLB
+ * flush with no address parameters.
*/
ENTRY(__kvm_tlb_flush_vmid_ipa)
+ENTRY(__kvm_tlb_flush_vmid)
push {r2, r3}
dsb ishst
@@ -65,6 +69,7 @@ ENTRY(__kvm_tlb_flush_vmid_ipa)
pop {r2, r3}
bx lr
ENDPROC(__kvm_tlb_flush_vmid_ipa)
+ENDPROC(__kvm_tlb_flush_vmid)
/********************************************************************
* Flush TLBs and instruction caches of all CPUs inside the inner-shareable
diff --git a/arch/arm/kvm/mmu.c b/arch/arm/kvm/mmu.c
index e8580e2..7ab77f3 100644
--- a/arch/arm/kvm/mmu.c
+++ b/arch/arm/kvm/mmu.c
@@ -56,6 +56,16 @@ static void kvm_tlb_flush_vmid_ipa(struct kvm *kvm, phys_addr_t ipa)
kvm_call_hyp(__kvm_tlb_flush_vmid_ipa, kvm, ipa);
}
+/* Function reuses __kvm_tlb_flush_vmid_ipa() HYP interface without additional
+ * address argument to flush entire VM TLBs.
+ */
+void kvm_flush_remote_tlbs(struct kvm *kvm)
+{
+ if (kvm)
+ kvm_call_hyp(__kvm_tlb_flush_vmid, kvm);
+}
+
+
static int mmu_topup_memory_cache(struct kvm_mmu_memory_cache *cache,
int min, int max)
{
--
1.7.9.5
reply other threads:[~2014-04-22 23:17 UTC|newest]
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