| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <CAOLK0pyvtfhoGM+D7h=gXwNpNjXGZiDJKpuVi9HOwb++4asCXw@mail.gmail.com>
Date: Tue, 27 Nov 2018 19:59:22 +0800
From: Tianyu Lan <lantianyu1986@...il.com>
To: 天宇 蓝 <lantianyu1986@...il.com>
Cc: Tianyu Lan <Tianyu.Lan@...rosoft.com>, benh@...nel.crashing.org,
bp@...en8.de, catalin.marinas@....com, christoffer.dall@....com,
devel@...uxdriverproject.org, haiyangz@...rosoft.com,
"H. Peter Anvin" <hpa@...or.com>, jhogan@...nel.org,
kvmarm@...ts.cs.columbia.edu, kvm-ppc@...r.kernel.org,
kvm <kvm@...r.kernel.org>, kys@...rosoft.com,
linux-arm-kernel@...ts.infradead.org, linux@...linux.org.uk,
"linux-kernel@...r kernel org" <linux-kernel@...r.kernel.org>,
linux-mips@...ux-mips.org, linuxppc-dev@...ts.ozlabs.org,
marc.zyngier@....com, Ingo Molnar <mingo@...hat.com>,
mpe@...erman.id.au, paul.burton@...s.com, paulus@...abs.org,
Paolo Bonzini <pbonzini@...hat.com>, ralf@...ux-mips.org,
Radim Krcmar <rkrcmar@...hat.com>, sthemmin@...rosoft.com,
Thomas Gleixner <tglx@...utronix.de>, will.deacon@....com,
"the arch/x86 maintainers" <x86@...nel.org>,
michael.h.kelley@...rosoft.com, vkuznets@...hat.com
Subject: Re: [PATCH V5 00/10] x86/KVM/Hyper-v: Add HV ept tlb range flush
hypercall support in KVM
Gentile Ping...
On Thu, Nov 8, 2018 at 10:43 PM <lantianyu1986@...il.com> wrote:
>
> From: Lan Tianyu <Tianyu.Lan@...rosoft.com>
>
> Sorry. Some patches was blocked and I try to resend via another account.
>
> For nested memory virtualization, Hyper-v doesn't set write-protect
> L1 hypervisor EPT page directory and page table node to track changes
> while it relies on guest to tell it changes via HvFlushGuestAddressLlist
> hypercall. HvFlushGuestAddressLlist hypercall provides a way to flush
> EPT page table with ranges which are specified by L1 hypervisor.
>
> If L1 hypervisor uses INVEPT or HvFlushGuestAddressSpace hypercall to
> flush EPT tlb, Hyper-V will invalidate associated EPT shadow page table
> and sync L1's EPT table when next EPT page fault is triggered.
> HvFlushGuestAddressLlist hypercall helps to avoid such redundant EPT
> page fault and synchronization of shadow page table.
>
> This patchset is rebased on the Linux 4.20-rc1 and Patch "KVM/VMX: Check
> ept_pointer before flushing ept tlb".(https://www.mail-archive.com/linux
> -kernel@...r.kernel.org/msg1798827.html).
>
> Change since v4:
> 1) Split flush address and flush list patches. This patchset only contains
> flush address patches. Will post flush list patches later.
> 2) Expose function hyperv_fill_flush_guest_mapping_list()
> out of hyperv file
> 3) Adjust parameter of hyperv_flush_guest_mapping_range()
> 4) Reorder patchset and move Hyper-V and VMX changes ahead.
>
> Change since v3:
> 1) Remove code of updating "tlbs_dirty" in kvm_flush_remote_tlbs_with_range()
> 2) Remove directly tlb flush in the kvm_handle_hva_range()
> 3) Move tlb flush in kvm_set_pte_rmapp() to kvm_mmu_notifier_change_pte()
> 4) Combine Vitaly's "don't pass EPT configuration info to
> vmx_hv_remote_flush_tlb()" fix
>
> Change since v2:
> 1) Fix comment in the kvm_flush_remote_tlbs_with_range()
> 2) Move HV_MAX_FLUSH_PAGES and HV_MAX_FLUSH_REP_COUNT to
> hyperv-tlfs.h.
> 3) Calculate HV_MAX_FLUSH_REP_COUNT in the macro definition
> 4) Use HV_MAX_FLUSH_REP_COUNT to define length of gpa_list in
> struct hv_guest_mapping_flush_list.
>
> Change since v1:
> 1) Convert "end_gfn" of struct kvm_tlb_range to "pages" in order
> to avoid confusion as to whether "end_gfn" is inclusive or exlusive.
> 2) Add hyperv tlb range struct and replace kvm tlb range struct
> with new struct in order to avoid using kvm struct in the hyperv
> code directly.
>
>
> Lan Tianyu (10):
> KVM: Add tlb_remote_flush_with_range callback in kvm_x86_ops
> x86/hyper-v: Add HvFlushGuestAddressList hypercall support
> x86/Hyper-v: Add trace in the
> hyperv_nested_flush_guest_mapping_range()
> KVM/VMX: Add hv tlb range flush support
> KVM/MMU: Add tlb flush with range helper function
> KVM: Replace old tlb flush function with new one to flush a specified
> range.
> KVM: Make kvm_set_spte_hva() return int
> KVM/MMU: Move tlb flush in kvm_set_pte_rmapp() to
> kvm_mmu_notifier_change_pte()
> KVM/MMU: Flush tlb directly in the kvm_set_pte_rmapp()
> KVM/MMU: Flush tlb directly in the kvm_zap_gfn_range()
>
> arch/arm/include/asm/kvm_host.h | 2 +-
> arch/arm64/include/asm/kvm_host.h | 2 +-
> arch/mips/include/asm/kvm_host.h | 2 +-
> arch/mips/kvm/mmu.c | 3 +-
> arch/powerpc/include/asm/kvm_host.h | 2 +-
> arch/powerpc/kvm/book3s.c | 3 +-
> arch/powerpc/kvm/e500_mmu_host.c | 3 +-
> arch/x86/hyperv/nested.c | 80 +++++++++++++++++++++++++++++++
> arch/x86/include/asm/hyperv-tlfs.h | 32 +++++++++++++
> arch/x86/include/asm/kvm_host.h | 9 +++-
> arch/x86/include/asm/mshyperv.h | 15 ++++++
> arch/x86/include/asm/trace/hyperv.h | 14 ++++++
> arch/x86/kvm/mmu.c | 96 +++++++++++++++++++++++++++++--------
> arch/x86/kvm/paging_tmpl.h | 3 +-
> arch/x86/kvm/vmx.c | 69 ++++++++++++++++++--------
> virt/kvm/arm/mmu.c | 6 ++-
> virt/kvm/kvm_main.c | 5 +-
> 17 files changed, 295 insertions(+), 51 deletions(-)
>
> --
> 2.14.4
>
--
Best regards
Tianyu Lan
Powered by blists - more mailing lists