From: Will Deacon <will@kernel.org>
To: Fuad Tabba <tabba@google.com>
Cc: kvmarm@lists.cs.columbia.edu, maz@kernel.org,
james.morse@arm.com, alexandru.elisei@arm.com,
suzuki.poulose@arm.com, mark.rutland@arm.com,
christoffer.dall@arm.com, pbonzini@redhat.com,
drjones@redhat.com, qperret@google.com, kvm@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, kernel-team@android.com
Subject: Re: [PATCH v3 10/15] KVM: arm64: Guest exit handlers for nVHE hyp
Date: Tue, 3 Aug 2021 16:32:22 +0100 [thread overview]
Message-ID: <20210803153222.GB31125@willie-the-truck> (raw)
In-Reply-To: <20210719160346.609914-11-tabba@google.com>
On Mon, Jul 19, 2021 at 05:03:41PM +0100, Fuad Tabba wrote:
> Add an array of pointers to handlers for various trap reasons in
> nVHE code.
>
> The current code selects how to fixup a guest on exit based on a
> series of if/else statements. Future patches will also require
> different handling for guest exists. Create an array of handlers
> to consolidate them.
>
> No functional change intended as the array isn't populated yet.
>
> Acked-by: Will Deacon <will@kernel.org>
> Signed-off-by: Fuad Tabba <tabba@google.com>
> ---
> arch/arm64/kvm/hyp/include/hyp/switch.h | 43 +++++++++++++++++++++++++
> arch/arm64/kvm/hyp/nvhe/switch.c | 35 ++++++++++++++++++++
> 2 files changed, 78 insertions(+)
Definitely keep my Ack on this, but Clang just chucked out a warning due to:
> diff --git a/arch/arm64/kvm/hyp/include/hyp/switch.h b/arch/arm64/kvm/hyp/include/hyp/switch.h
> index a0e78a6027be..5a2b89b96c67 100644
> --- a/arch/arm64/kvm/hyp/include/hyp/switch.h
> +++ b/arch/arm64/kvm/hyp/include/hyp/switch.h
> @@ -409,6 +409,46 @@ static inline bool __hyp_handle_ptrauth(struct kvm_vcpu *vcpu)
> return true;
> }
>
> +typedef int (*exit_handle_fn)(struct kvm_vcpu *);
> +
> +exit_handle_fn kvm_get_nvhe_exit_handler(struct kvm_vcpu *vcpu);
and:
> diff --git a/arch/arm64/kvm/hyp/nvhe/switch.c b/arch/arm64/kvm/hyp/nvhe/switch.c
> index 86f3d6482935..36da423006bd 100644
> --- a/arch/arm64/kvm/hyp/nvhe/switch.c
> +++ b/arch/arm64/kvm/hyp/nvhe/switch.c
> @@ -158,6 +158,41 @@ static void __pmu_switch_to_host(struct kvm_cpu_context *host_ctxt)
> write_sysreg(pmu->events_host, pmcntenset_el0);
> }
>
> +typedef int (*exit_handle_fn)(struct kvm_vcpu *);
Which leads to:
arch/arm64/kvm/hyp/nvhe/switch.c:189:15: warning: redefinition of typedef 'exit_handle_fn' is a C11 feature [-Wtypedef-redefinition]
typedef int (*exit_handle_fn)(struct kvm_vcpu *);
^
./arch/arm64/kvm/hyp/include/hyp/switch.h:416:15: note: previous definition is here
typedef int (*exit_handle_fn)(struct kvm_vcpu *);
^
1 warning generated.
So I guess just pick your favourite?
Will
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next prev parent reply other threads:[~2021-08-03 15:34 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-19 16:03 [PATCH v3 00/15] KVM: arm64: Fixed features for protected VMs Fuad Tabba
2021-07-19 16:03 ` [PATCH v3 01/15] KVM: arm64: placeholder to check if VM is protected Fuad Tabba
2021-08-12 8:58 ` Will Deacon
2021-08-12 9:22 ` Fuad Tabba
2021-07-19 16:03 ` [PATCH v3 02/15] KVM: arm64: Remove trailing whitespace in comment Fuad Tabba
2021-08-12 8:59 ` Will Deacon
2021-07-19 16:03 ` [PATCH v3 03/15] KVM: arm64: MDCR_EL2 is a 64-bit register Fuad Tabba
2021-07-19 16:03 ` [PATCH v3 04/15] KVM: arm64: Fix names of config register fields Fuad Tabba
2021-07-19 16:03 ` [PATCH v3 05/15] KVM: arm64: Refactor sys_regs.h,c for nVHE reuse Fuad Tabba
2021-07-20 13:38 ` [PATCH v3 05/15] KVM: arm64: Refactor sys_regs.h, c " Andrew Jones
2021-07-20 14:03 ` Fuad Tabba
2021-08-12 8:59 ` Will Deacon
2021-07-19 16:03 ` [PATCH v3 06/15] KVM: arm64: Restore mdcr_el2 from vcpu Fuad Tabba
2021-07-20 14:52 ` Andrew Jones
2021-07-21 7:37 ` Fuad Tabba
2021-08-12 8:46 ` Will Deacon
2021-08-12 9:28 ` Fuad Tabba
2021-08-12 9:49 ` Will Deacon
2021-07-19 16:03 ` [PATCH v3 07/15] KVM: arm64: Track value of cptr_el2 in struct kvm_vcpu_arch Fuad Tabba
2021-08-12 8:59 ` Will Deacon
2021-07-19 16:03 ` [PATCH v3 08/15] KVM: arm64: Add feature register flag definitions Fuad Tabba
2021-08-12 8:59 ` Will Deacon
2021-08-12 9:21 ` Fuad Tabba
2021-07-19 16:03 ` [PATCH v3 09/15] KVM: arm64: Add config register bit definitions Fuad Tabba
2021-08-12 8:59 ` Will Deacon
2021-07-19 16:03 ` [PATCH v3 10/15] KVM: arm64: Guest exit handlers for nVHE hyp Fuad Tabba
2021-08-03 15:32 ` Will Deacon [this message]
2021-07-19 16:03 ` [PATCH v3 11/15] KVM: arm64: Add trap handlers for protected VMs Fuad Tabba
2021-08-12 9:45 ` Will Deacon
2021-08-16 14:39 ` Fuad Tabba
2021-07-19 16:03 ` [PATCH v3 12/15] KVM: arm64: Move sanitized copies of CPU features Fuad Tabba
2021-08-12 9:46 ` Will Deacon
2021-07-19 16:03 ` [PATCH v3 13/15] KVM: arm64: Trap access to pVM restricted features Fuad Tabba
2021-08-12 9:53 ` Will Deacon
2021-07-19 16:03 ` [PATCH v3 14/15] KVM: arm64: Handle protected guests at 32 bits Fuad Tabba
2021-07-19 19:43 ` Oliver Upton
2021-07-21 8:39 ` Fuad Tabba
2021-08-12 9:57 ` Will Deacon
2021-08-12 13:08 ` Fuad Tabba
2021-07-19 16:03 ` [PATCH v3 15/15] KVM: arm64: Restrict protected VM capabilities Fuad Tabba
2021-08-12 9:59 ` Will Deacon
2021-08-16 14:40 ` Fuad Tabba
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