From: Raghavendra Rao Ananta <rananta@google.com>
To: Oliver Upton <oliver.upton@linux.dev>,
Marc Zyngier <maz@kernel.org>, James Morse <james.morse@arm.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>
Cc: "Paolo Bonzini" <pbonzini@redhat.com>,
"Sean Christopherson" <seanjc@google.com>,
"Huacai Chen" <chenhuacai@kernel.org>,
"Zenghui Yu" <yuzenghui@huawei.com>,
"Anup Patel" <anup@brainfault.org>,
"Atish Patra" <atishp@atishpatra.org>,
"Jing Zhang" <jingzhangos@google.com>,
"Reiji Watanabe" <reijiw@google.com>,
"Colton Lewis" <coltonlewis@google.com>,
"Raghavendra Rao Anata" <rananta@google.com>,
"David Matlack" <dmatlack@google.com>,
"Fuad Tabba" <tabba@google.com>,
linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev,
linux-mips@vger.kernel.org, kvm-riscv@lists.infradead.org,
linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org,
kvm@vger.kernel.org, "Shaoqin Huang" <shahuang@redhat.com>,
"Gavin Shan" <gshan@redhat.com>,
"Philippe Mathieu-Daudé" <philmd@linaro.org>
Subject: [PATCH v9 04/14] KVM: Remove CONFIG_HAVE_KVM_ARCH_TLB_FLUSH_ALL
Date: Fri, 11 Aug 2023 04:51:17 +0000 [thread overview]
Message-ID: <20230811045127.3308641-5-rananta@google.com> (raw)
In-Reply-To: <20230811045127.3308641-1-rananta@google.com>
kvm_arch_flush_remote_tlbs() or CONFIG_HAVE_KVM_ARCH_TLB_FLUSH_ALL
are two mechanisms to solve the same problem, allowing
architecture-specific code to provide a non-IPI implementation of
remote TLB flushing.
Dropping CONFIG_HAVE_KVM_ARCH_TLB_FLUSH_ALL allows KVM to standardize
all architectures on kvm_arch_flush_remote_tlbs() instead of
maintaining two mechanisms.
Signed-off-by: Raghavendra Rao Ananta <rananta@google.com>
Reviewed-by: Shaoqin Huang <shahuang@redhat.com>
Reviewed-by: Gavin Shan <gshan@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
virt/kvm/Kconfig | 3 ---
virt/kvm/kvm_main.c | 2 --
2 files changed, 5 deletions(-)
diff --git a/virt/kvm/Kconfig b/virt/kvm/Kconfig
index b74916de5183a..484d0873061ca 100644
--- a/virt/kvm/Kconfig
+++ b/virt/kvm/Kconfig
@@ -62,9 +62,6 @@ config HAVE_KVM_CPU_RELAX_INTERCEPT
config KVM_VFIO
bool
-config HAVE_KVM_ARCH_TLB_FLUSH_ALL
- bool
-
config HAVE_KVM_INVALID_WAKEUPS
bool
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 70e5479797ac3..d6b0507861550 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -345,7 +345,6 @@ bool kvm_make_all_cpus_request(struct kvm *kvm, unsigned int req)
}
EXPORT_SYMBOL_GPL(kvm_make_all_cpus_request);
-#ifndef CONFIG_HAVE_KVM_ARCH_TLB_FLUSH_ALL
void kvm_flush_remote_tlbs(struct kvm *kvm)
{
++kvm->stat.generic.remote_tlb_flush_requests;
@@ -366,7 +365,6 @@ void kvm_flush_remote_tlbs(struct kvm *kvm)
++kvm->stat.generic.remote_tlb_flush;
}
EXPORT_SYMBOL_GPL(kvm_flush_remote_tlbs);
-#endif
static void kvm_flush_shadow_all(struct kvm *kvm)
{
--
2.41.0.640.ga95def55d0-goog
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next prev parent reply other threads:[~2023-08-11 4:52 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-08-11 4:51 [PATCH v9 00/14] KVM: arm64: Add support for FEAT_TLBIRANGE Raghavendra Rao Ananta
2023-08-11 4:51 ` [PATCH v9 01/14] KVM: Rename kvm_arch_flush_remote_tlb() to kvm_arch_flush_remote_tlbs() Raghavendra Rao Ananta
2023-08-15 22:30 ` Sean Christopherson
2023-08-11 4:51 ` [PATCH v9 02/14] KVM: Declare kvm_arch_flush_remote_tlbs() globally Raghavendra Rao Ananta
2023-08-11 4:51 ` [PATCH v9 03/14] KVM: arm64: Use kvm_arch_flush_remote_tlbs() Raghavendra Rao Ananta
2023-08-11 4:51 ` Raghavendra Rao Ananta [this message]
2023-08-11 4:51 ` [PATCH v9 05/14] KVM: Allow range-based TLB invalidation from common code Raghavendra Rao Ananta
2023-08-15 22:30 ` Sean Christopherson
2023-08-17 8:39 ` Marc Zyngier
2023-08-11 4:51 ` [PATCH v9 06/14] KVM: Move kvm_arch_flush_remote_tlbs_memslot() to " Raghavendra Rao Ananta
2023-08-15 22:31 ` Sean Christopherson
2023-08-11 4:51 ` [PATCH v9 07/14] arm64: tlb: Refactor the core flush algorithm of __flush_tlb_range Raghavendra Rao Ananta
2023-08-11 4:51 ` [PATCH v9 08/14] arm64: tlb: Implement __flush_s2_tlb_range_op() Raghavendra Rao Ananta
2023-08-11 4:51 ` [PATCH v9 09/14] KVM: arm64: Implement __kvm_tlb_flush_vmid_range() Raghavendra Rao Ananta
2023-08-11 4:51 ` [PATCH v9 10/14] KVM: arm64: Define kvm_tlb_flush_vmid_range() Raghavendra Rao Ananta
2023-08-11 4:51 ` [PATCH v9 11/14] KVM: arm64: Implement kvm_arch_flush_remote_tlbs_range() Raghavendra Rao Ananta
2023-08-11 4:51 ` [PATCH v9 12/14] KVM: arm64: Flush only the memslot after write-protect Raghavendra Rao Ananta
2023-08-11 4:51 ` [PATCH v9 13/14] KVM: arm64: Invalidate the table entries upon a range Raghavendra Rao Ananta
2023-08-11 4:51 ` [PATCH v9 14/14] KVM: arm64: Use TLBI range-based instructions for unmap Raghavendra Rao Ananta
2023-08-14 23:16 ` [PATCH v9 00/14] KVM: arm64: Add support for FEAT_TLBIRANGE Sean Christopherson
2023-08-15 0:29 ` Raghavendra Rao Ananta
2023-08-15 0:52 ` Sean Christopherson
2023-08-15 17:11 ` Raghavendra Rao Ananta
2023-08-15 17:15 ` Sean Christopherson
2023-08-17 9:29 ` Marc Zyngier
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