From: Will Deacon <will@kernel.org> To: kvmarm@lists.cs.columbia.edu Cc: kernel-team@android.com, Marc Zyngier <maz@kernel.org>, Will Deacon <will@kernel.org>, linux-arm-kernel@lists.infradead.org Subject: [PATCH 0/7] KVM: arm64: Fixes to early stage-2 fault handling Date: Fri, 24 Jul 2020 15:34:59 +0100 [thread overview] Message-ID: <20200724143506.17772-1-will@kernel.org> (raw) Hi folks, Continuing my journey into the KVM stage-2 page-table code, here are some fixes for a bunch of issues I spotted purely by code inspection. Most of these involve really unusual scenarios, but I'm a bit worried about the stage-2 fault on stage-1 page-table walk during instruction fetch from a read-only memslot, as that feels like it might be hittable with EFI. Anyway, feedback welcome, especially as this is a user-visible change. Cheers, Will Cc: Marc Zyngier <maz@kernel.org> Cc: Quentin Perret <qperret@google.com> Cc: James Morse <james.morse@arm.com> Cc: Suzuki Poulose <suzuki.poulose@arm.com> --->8 Will Deacon (7): KVM: arm64: Update comment when skipping guest MMIO access instruction KVM: arm64: Rename kvm_vcpu_dabt_isextabt() KVM: arm64: Handle data and instruction external aborts the same way KVM: arm64: Remove useless local variable KVM: arm64: Move 'invalid syndrome' logic out of io_mem_abort() KVM: arm64: Handle stage-2 faults on stage-1 page-table walks earlier KVM: arm64: Separate write faults on read-only memslots from MMIO arch/arm64/include/asm/kvm_emulate.h | 2 +- arch/arm64/kvm/hyp/switch.c | 2 +- arch/arm64/kvm/mmio.c | 29 +++------- arch/arm64/kvm/mmu.c | 87 +++++++++++++++++++--------- 4 files changed, 69 insertions(+), 51 deletions(-) -- 2.28.0.rc0.142.g3c755180ce-goog _______________________________________________ kvmarm mailing list kvmarm@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
WARNING: multiple messages have this Message-ID (diff)
From: Will Deacon <will@kernel.org> To: kvmarm@lists.cs.columbia.edu Cc: Quentin Perret <qperret@google.com>, kernel-team@android.com, Suzuki Poulose <suzuki.poulose@arm.com>, James Morse <james.morse@arm.com>, Marc Zyngier <maz@kernel.org>, Will Deacon <will@kernel.org>, linux-arm-kernel@lists.infradead.org Subject: [PATCH 0/7] KVM: arm64: Fixes to early stage-2 fault handling Date: Fri, 24 Jul 2020 15:34:59 +0100 [thread overview] Message-ID: <20200724143506.17772-1-will@kernel.org> (raw) Hi folks, Continuing my journey into the KVM stage-2 page-table code, here are some fixes for a bunch of issues I spotted purely by code inspection. Most of these involve really unusual scenarios, but I'm a bit worried about the stage-2 fault on stage-1 page-table walk during instruction fetch from a read-only memslot, as that feels like it might be hittable with EFI. Anyway, feedback welcome, especially as this is a user-visible change. Cheers, Will Cc: Marc Zyngier <maz@kernel.org> Cc: Quentin Perret <qperret@google.com> Cc: James Morse <james.morse@arm.com> Cc: Suzuki Poulose <suzuki.poulose@arm.com> --->8 Will Deacon (7): KVM: arm64: Update comment when skipping guest MMIO access instruction KVM: arm64: Rename kvm_vcpu_dabt_isextabt() KVM: arm64: Handle data and instruction external aborts the same way KVM: arm64: Remove useless local variable KVM: arm64: Move 'invalid syndrome' logic out of io_mem_abort() KVM: arm64: Handle stage-2 faults on stage-1 page-table walks earlier KVM: arm64: Separate write faults on read-only memslots from MMIO arch/arm64/include/asm/kvm_emulate.h | 2 +- arch/arm64/kvm/hyp/switch.c | 2 +- arch/arm64/kvm/mmio.c | 29 +++------- arch/arm64/kvm/mmu.c | 87 +++++++++++++++++++--------- 4 files changed, 69 insertions(+), 51 deletions(-) -- 2.28.0.rc0.142.g3c755180ce-goog _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next reply other threads:[~2020-07-24 14:35 UTC|newest] Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-07-24 14:34 Will Deacon [this message] 2020-07-24 14:34 ` [PATCH 0/7] KVM: arm64: Fixes to early stage-2 fault handling Will Deacon 2020-07-24 14:35 ` [PATCH 1/7] KVM: arm64: Update comment when skipping guest MMIO access instruction Will Deacon 2020-07-24 14:35 ` Will Deacon 2020-07-26 11:08 ` Marc Zyngier 2020-07-26 11:08 ` Marc Zyngier 2020-07-27 10:30 ` Will Deacon 2020-07-27 10:30 ` Will Deacon 2020-07-24 14:35 ` [PATCH 2/7] KVM: arm64: Rename kvm_vcpu_dabt_isextabt() Will Deacon 2020-07-24 14:35 ` Will Deacon 2020-07-26 11:15 ` Marc Zyngier 2020-07-26 11:15 ` Marc Zyngier 2020-07-27 10:30 ` Will Deacon 2020-07-27 10:30 ` Will Deacon 2020-07-24 14:35 ` [PATCH 3/7] KVM: arm64: Handle data and instruction external aborts the same way Will Deacon 2020-07-24 14:35 ` Will Deacon 2020-07-24 14:35 ` [PATCH 4/7] KVM: arm64: Remove useless local variable Will Deacon 2020-07-24 14:35 ` Will Deacon 2020-07-24 14:35 ` [PATCH 5/7] KVM: arm64: Move 'invalid syndrome' logic out of io_mem_abort() Will Deacon 2020-07-24 14:35 ` Will Deacon 2020-07-26 11:55 ` Marc Zyngier 2020-07-26 11:55 ` Marc Zyngier 2020-07-27 10:31 ` Will Deacon 2020-07-27 10:31 ` Will Deacon 2020-07-24 14:35 ` [PATCH 6/7] KVM: arm64: Handle stage-2 faults on stage-1 page-table walks earlier Will Deacon 2020-07-24 14:35 ` Will Deacon 2020-07-26 13:38 ` Marc Zyngier 2020-07-26 13:38 ` Marc Zyngier 2020-07-27 10:29 ` Will Deacon 2020-07-27 10:29 ` Will Deacon 2020-07-24 14:35 ` [PATCH 7/7] KVM: arm64: Separate write faults on read-only memslots from MMIO Will Deacon 2020-07-24 14:35 ` Will Deacon
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