From: Russell King - ARM Linux <linux@armlinux.org.uk>
To: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-mips@linux-mips.org, linux@armlinux.org,
kvm@vger.kernel.org, rkrcmar@redhat.com,
benh@kernel.crashing.org, will.deacon@arm.com,
christoffer.dall@arm.com, paulus@ozlabs.org, hpa@zytor.com,
kys@microsoft.com, kvmarm@lists.cs.columbia.edu,
lantianyu1986@gmail.com, sthemmin@microsoft.com,
mpe@ellerman.id.au, x86@kernel.org,
michael.h.kelley@microsoft.com, mingo@redhat.com,
catalin.marinas@arm.com, jhogan@kernel.org,
Lan Tianyu <Tianyu.Lan@microsoft.com>,
marc.zyngier@arm.com, haiyangz@microsoft.com,
kvm-ppc@vger.kernel.org, Liran Alon <liran.alon@oracle.com>,
pbonzini@redhat.com, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, ralf@linux-mips.org,
paul.burton@mips.com, devel@linuxdriverproject.org,
vkuznets@redhat.com, linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH V4 2/15] KVM/MMU: Add tlb flush with range helper function
Date: Sun, 14 Oct 2018 10:35:41 +0100 [thread overview]
Message-ID: <20181014093541.GW30658@n2100.armlinux.org.uk> (raw)
In-Reply-To: <20181014092734.GV30658@n2100.armlinux.org.uk>
On Sun, Oct 14, 2018 at 10:27:34AM +0100, Russell King - ARM Linux wrote:
> On Sun, Oct 14, 2018 at 10:16:56AM +0200, Thomas Gleixner wrote:
> > On Sun, 14 Oct 2018, Liran Alon wrote:
> > > > On 13 Oct 2018, at 17:53, lantianyu1986@gmail.com wrote:
> > > >
> > > > From: Lan Tianyu <Tianyu.Lan@microsoft.com>
> > > >
> > > > This patch is to add wrapper functions for tlb_remote_flush_with_range
> > > > callback.
> > > >
> > > > Signed-off-by: Lan Tianyu <Tianyu.Lan@microsoft.com>
> > > > ---
> > > > Change sicne V3:
> > > > Remove code of updating "tlbs_dirty"
> > > > Change since V2:
> > > > Fix comment in the kvm_flush_remote_tlbs_with_range()
> > > > ---
> > > > arch/x86/kvm/mmu.c | 40 ++++++++++++++++++++++++++++++++++++++++
> > > > 1 file changed, 40 insertions(+)
> > > >
> > > > diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
> > > > index c73d9f650de7..ff656d85903a 100644
> > > > --- a/arch/x86/kvm/mmu.c
> > > > +++ b/arch/x86/kvm/mmu.c
> > > > @@ -264,6 +264,46 @@ static void mmu_spte_set(u64 *sptep, u64 spte);
> > > > static union kvm_mmu_page_role
> > > > kvm_mmu_calc_root_page_role(struct kvm_vcpu *vcpu);
> > > >
> > > > +
> > > > +static inline bool kvm_available_flush_tlb_with_range(void)
> > > > +{
> > > > + return kvm_x86_ops->tlb_remote_flush_with_range;
> > > > +}
> > >
> > > Seems that kvm_available_flush_tlb_with_range() is not used in this patch…
> >
> > What's wrong with that?
> >
> > It provides the implementation and later patches make use of it. It's a
> > sensible way to split patches into small, self contained entities.
>
> From what I can see of the patches that follow _this_ patch in the
> series, this function remains unused. So, not only is it not used
> in this patch, it's not used in this series.
Note - I seem to have only received patches 1 through 4, so this is
based on the patches I've received.
--
RMK's Patch system: http://www.armlinux.org.uk/developer/patches/
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next prev parent reply other threads:[~2018-10-14 9:35 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-13 14:53 [PATCH V4 00/15] x86/KVM/Hyper-v: Add HV ept tlb range flush hypercall support in KVM lantianyu1986
2018-10-13 14:53 ` [PATCH V4 1/15] KVM: Add tlb_remote_flush_with_range callback in kvm_x86_ops lantianyu1986
2018-10-13 14:53 ` [PATCH V4 2/15] KVM/MMU: Add tlb flush with range helper function lantianyu1986
2018-10-14 7:26 ` Liran Alon
2018-10-14 8:16 ` Thomas Gleixner
2018-10-14 9:20 ` Liran Alon
2018-10-14 12:57 ` Tianyu Lan
2018-10-14 9:27 ` Russell King - ARM Linux
2018-10-14 9:35 ` Russell King - ARM Linux [this message]
2018-10-14 13:21 ` Tianyu Lan
2018-10-14 13:33 ` Russell King - ARM Linux
2018-10-15 12:02 ` Paolo Bonzini
2018-10-13 14:53 ` [PATCH V4 3/15] KVM: Replace old tlb flush function with new one to flush a specified range lantianyu1986
2018-10-13 14:53 ` [PATCH V4 4/15] KVM: Make kvm_set_spte_hva() return int lantianyu1986
2018-10-13 14:53 ` [PATCH V4 5/15] KVM/MMU: Move tlb flush in kvm_set_pte_rmapp() to kvm_mmu_notifier_change_pte() lantianyu1986
2018-10-13 14:53 ` [PATCH V4 6/15] KVM/MMU: Flush tlb directly in the kvm_set_pte_rmapp() lantianyu1986
2018-10-15 11:52 ` Paolo Bonzini
2018-10-13 14:53 ` [PATCH V4 7/15] KVM/MMU: Flush tlb directly in the kvm_zap_gfn_range() lantianyu1986
2018-10-15 10:04 ` Paolo Bonzini
2018-10-15 13:08 ` Tianyu Lan
2018-10-13 14:53 ` [PATCH V4 8/15] KVM/MMU: Flush tlb directly in kvm_mmu_zap_collapsible_spte() lantianyu1986
2018-10-13 14:54 ` [PATCH V4 9/15] KVM: Add flush_link and parent_pte in the struct kvm_mmu_page lantianyu1986
2018-10-15 10:12 ` Paolo Bonzini
2018-10-13 14:54 ` [PATCH V4 10/15] KVM: Add spte's point " lantianyu1986
2018-10-13 14:54 ` [PATCH V4 11/15] KVM/MMU: Replace tlb flush function with range list flush function lantianyu1986
2018-10-15 11:51 ` Paolo Bonzini
2018-10-13 14:54 ` [PATCH V4 12/15] x86/hyper-v: Add HvFlushGuestAddressList hypercall support lantianyu1986
2018-10-15 10:30 ` Paolo Bonzini
2018-10-13 14:54 ` [PATCH V4 13/15] x86/Hyper-v: Add trace in the hyperv_nested_flush_guest_mapping_range() lantianyu1986
2018-10-13 14:54 ` [PATCH V4 14/15] KVM/VMX: Change hv flush logic when ept tables are mismatched lantianyu1986
2018-10-15 11:15 ` Paolo Bonzini
2018-10-13 14:54 ` [PATCH V4 15/15] KVM/VMX: Add hv tlb range flush support lantianyu1986
2018-10-15 12:04 ` [PATCH V4 00/15] x86/KVM/Hyper-v: Add HV ept tlb range flush hypercall support in KVM Paolo Bonzini
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