From: Quentin Perret <qperret@google.com>
To: maz@kernel.org, james.morse@arm.com, alexandru.elisei@arm.com,
suzuki.poulose@arm.com, catalin.marinas@arm.com, will@kernel.org
Cc: linux-arm-kernel@lists.infradead.org,
kvmarm@lists.cs.columbia.edu, linux-kernel@vger.kernel.org,
ardb@kernel.org, qwandor@google.com, tabba@google.com,
dbrazdil@google.com, kernel-team@android.com, qperret@google.com
Subject: [PATCH v4 00/21] Track shared pages at EL2 in protected mode
Date: Mon, 9 Aug 2021 16:24:27 +0100 [thread overview]
Message-ID: <20210809152448.1810400-1-qperret@google.com> (raw)
Hi all,
This is v4 of the patch series previously posted here:
https://lore.kernel.org/lkml/20210729132818.4091769-1-qperret@google.com/
This series aims to improve how the nVHE hypervisor tracks ownership of
memory pages when running in protected mode ("kvm-arm.mode=protected" on
the kernel command line).
The main issue with the existing ownership tracking code is that it is
completely binary: a page is either owned by an entity (e.g. the host)
or not. However, we'll need something smarter to track shared pages, as
is needed for virtio, or even just host/hypervisor communications.
This series introduces a few changes to the kvm page-table library to
allow annotating shared pages in ignored bits (a.k.a. software bits) of
leaf entries, and makes use of that infrastructure to track all pages
that are shared between the host and the hypervisor. We will obviously
want to apply the same treatment to guest stage-2 page-tables, but that
is not really possible to do until EL2 manages them directly, so I'll
keep that for another series.
The series is based on the 5.14-rc5, and has been tested on
AML-S905X-CC (Le Potato) and using various Qemu configurations.
Changes since v3
- Fixed typos in comments / commit messages;
- Various small cleanups and refactoring;
- Rebased on 5.14-rc5.
Marc Zyngier (1):
KVM: arm64: Introduce helper to retrieve a PTE and its level
Quentin Perret (19):
KVM: arm64: Introduce hyp_assert_lock_held()
KVM: arm64: Provide the host_stage2_try() helper macro
KVM: arm64: Expose page-table helpers
KVM: arm64: Optimize host memory aborts
KVM: arm64: Rename KVM_PTE_LEAF_ATTR_S2_IGNORED
KVM: arm64: Don't overwrite software bits with owner id
KVM: arm64: Tolerate re-creating hyp mappings to set software bits
KVM: arm64: Enable forcing page-level stage-2 mappings
KVM: arm64: Allow populating software bits
KVM: arm64: Add helpers to tag shared pages in SW bits
KVM: arm64: Expose host stage-2 manipulation helpers
KVM: arm64: Expose pkvm_hyp_id
KVM: arm64: Introduce addr_is_memory()
KVM: arm64: Enable retrieving protections attributes of PTEs
KVM: arm64: Mark host bss and rodata section as shared
KVM: arm64: Remove __pkvm_mark_hyp
KVM: arm64: Refactor protected nVHE stage-1 locking
KVM: arm64: Restrict EL2 stage-1 changes in protected mode
KVM: arm64: Make __pkvm_create_mappings static
Will Deacon (1):
KVM: arm64: Add hyp_spin_is_locked() for basic locking assertions at
EL2
arch/arm64/include/asm/kvm_asm.h | 5 +-
arch/arm64/include/asm/kvm_pgtable.h | 167 ++++++++----
arch/arm64/kvm/Kconfig | 9 +
arch/arm64/kvm/arm.c | 46 ----
arch/arm64/kvm/hyp/include/nvhe/mem_protect.h | 33 ++-
arch/arm64/kvm/hyp/include/nvhe/mm.h | 3 +-
arch/arm64/kvm/hyp/include/nvhe/spinlock.h | 25 ++
arch/arm64/kvm/hyp/nvhe/hyp-main.c | 20 +-
arch/arm64/kvm/hyp/nvhe/mem_protect.c | 225 +++++++++++++---
arch/arm64/kvm/hyp/nvhe/mm.c | 22 +-
arch/arm64/kvm/hyp/nvhe/setup.c | 82 +++++-
arch/arm64/kvm/hyp/pgtable.c | 247 +++++++++---------
arch/arm64/kvm/mmu.c | 28 +-
13 files changed, 628 insertions(+), 284 deletions(-)
--
2.32.0.605.g8dce9f2422-goog
WARNING: multiple messages have this Message-ID (diff)
From: Quentin Perret <qperret@google.com>
To: maz@kernel.org, james.morse@arm.com, alexandru.elisei@arm.com,
suzuki.poulose@arm.com, catalin.marinas@arm.com,
will@kernel.org
Cc: qwandor@google.com, linux-kernel@vger.kernel.org,
kvmarm@lists.cs.columbia.edu,
linux-arm-kernel@lists.infradead.org, kernel-team@android.com
Subject: [PATCH v4 00/21] Track shared pages at EL2 in protected mode
Date: Mon, 9 Aug 2021 16:24:27 +0100 [thread overview]
Message-ID: <20210809152448.1810400-1-qperret@google.com> (raw)
Hi all,
This is v4 of the patch series previously posted here:
https://lore.kernel.org/lkml/20210729132818.4091769-1-qperret@google.com/
This series aims to improve how the nVHE hypervisor tracks ownership of
memory pages when running in protected mode ("kvm-arm.mode=protected" on
the kernel command line).
The main issue with the existing ownership tracking code is that it is
completely binary: a page is either owned by an entity (e.g. the host)
or not. However, we'll need something smarter to track shared pages, as
is needed for virtio, or even just host/hypervisor communications.
This series introduces a few changes to the kvm page-table library to
allow annotating shared pages in ignored bits (a.k.a. software bits) of
leaf entries, and makes use of that infrastructure to track all pages
that are shared between the host and the hypervisor. We will obviously
want to apply the same treatment to guest stage-2 page-tables, but that
is not really possible to do until EL2 manages them directly, so I'll
keep that for another series.
The series is based on the 5.14-rc5, and has been tested on
AML-S905X-CC (Le Potato) and using various Qemu configurations.
Changes since v3
- Fixed typos in comments / commit messages;
- Various small cleanups and refactoring;
- Rebased on 5.14-rc5.
Marc Zyngier (1):
KVM: arm64: Introduce helper to retrieve a PTE and its level
Quentin Perret (19):
KVM: arm64: Introduce hyp_assert_lock_held()
KVM: arm64: Provide the host_stage2_try() helper macro
KVM: arm64: Expose page-table helpers
KVM: arm64: Optimize host memory aborts
KVM: arm64: Rename KVM_PTE_LEAF_ATTR_S2_IGNORED
KVM: arm64: Don't overwrite software bits with owner id
KVM: arm64: Tolerate re-creating hyp mappings to set software bits
KVM: arm64: Enable forcing page-level stage-2 mappings
KVM: arm64: Allow populating software bits
KVM: arm64: Add helpers to tag shared pages in SW bits
KVM: arm64: Expose host stage-2 manipulation helpers
KVM: arm64: Expose pkvm_hyp_id
KVM: arm64: Introduce addr_is_memory()
KVM: arm64: Enable retrieving protections attributes of PTEs
KVM: arm64: Mark host bss and rodata section as shared
KVM: arm64: Remove __pkvm_mark_hyp
KVM: arm64: Refactor protected nVHE stage-1 locking
KVM: arm64: Restrict EL2 stage-1 changes in protected mode
KVM: arm64: Make __pkvm_create_mappings static
Will Deacon (1):
KVM: arm64: Add hyp_spin_is_locked() for basic locking assertions at
EL2
arch/arm64/include/asm/kvm_asm.h | 5 +-
arch/arm64/include/asm/kvm_pgtable.h | 167 ++++++++----
arch/arm64/kvm/Kconfig | 9 +
arch/arm64/kvm/arm.c | 46 ----
arch/arm64/kvm/hyp/include/nvhe/mem_protect.h | 33 ++-
arch/arm64/kvm/hyp/include/nvhe/mm.h | 3 +-
arch/arm64/kvm/hyp/include/nvhe/spinlock.h | 25 ++
arch/arm64/kvm/hyp/nvhe/hyp-main.c | 20 +-
arch/arm64/kvm/hyp/nvhe/mem_protect.c | 225 +++++++++++++---
arch/arm64/kvm/hyp/nvhe/mm.c | 22 +-
arch/arm64/kvm/hyp/nvhe/setup.c | 82 +++++-
arch/arm64/kvm/hyp/pgtable.c | 247 +++++++++---------
arch/arm64/kvm/mmu.c | 28 +-
13 files changed, 628 insertions(+), 284 deletions(-)
--
2.32.0.605.g8dce9f2422-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: Quentin Perret <qperret@google.com>
To: maz@kernel.org, james.morse@arm.com, alexandru.elisei@arm.com,
suzuki.poulose@arm.com, catalin.marinas@arm.com,
will@kernel.org
Cc: linux-arm-kernel@lists.infradead.org,
kvmarm@lists.cs.columbia.edu, linux-kernel@vger.kernel.org,
ardb@kernel.org, qwandor@google.com, tabba@google.com,
dbrazdil@google.com, kernel-team@android.com,
qperret@google.com
Subject: [PATCH v4 00/21] Track shared pages at EL2 in protected mode
Date: Mon, 9 Aug 2021 16:24:27 +0100 [thread overview]
Message-ID: <20210809152448.1810400-1-qperret@google.com> (raw)
Hi all,
This is v4 of the patch series previously posted here:
https://lore.kernel.org/lkml/20210729132818.4091769-1-qperret@google.com/
This series aims to improve how the nVHE hypervisor tracks ownership of
memory pages when running in protected mode ("kvm-arm.mode=protected" on
the kernel command line).
The main issue with the existing ownership tracking code is that it is
completely binary: a page is either owned by an entity (e.g. the host)
or not. However, we'll need something smarter to track shared pages, as
is needed for virtio, or even just host/hypervisor communications.
This series introduces a few changes to the kvm page-table library to
allow annotating shared pages in ignored bits (a.k.a. software bits) of
leaf entries, and makes use of that infrastructure to track all pages
that are shared between the host and the hypervisor. We will obviously
want to apply the same treatment to guest stage-2 page-tables, but that
is not really possible to do until EL2 manages them directly, so I'll
keep that for another series.
The series is based on the 5.14-rc5, and has been tested on
AML-S905X-CC (Le Potato) and using various Qemu configurations.
Changes since v3
- Fixed typos in comments / commit messages;
- Various small cleanups and refactoring;
- Rebased on 5.14-rc5.
Marc Zyngier (1):
KVM: arm64: Introduce helper to retrieve a PTE and its level
Quentin Perret (19):
KVM: arm64: Introduce hyp_assert_lock_held()
KVM: arm64: Provide the host_stage2_try() helper macro
KVM: arm64: Expose page-table helpers
KVM: arm64: Optimize host memory aborts
KVM: arm64: Rename KVM_PTE_LEAF_ATTR_S2_IGNORED
KVM: arm64: Don't overwrite software bits with owner id
KVM: arm64: Tolerate re-creating hyp mappings to set software bits
KVM: arm64: Enable forcing page-level stage-2 mappings
KVM: arm64: Allow populating software bits
KVM: arm64: Add helpers to tag shared pages in SW bits
KVM: arm64: Expose host stage-2 manipulation helpers
KVM: arm64: Expose pkvm_hyp_id
KVM: arm64: Introduce addr_is_memory()
KVM: arm64: Enable retrieving protections attributes of PTEs
KVM: arm64: Mark host bss and rodata section as shared
KVM: arm64: Remove __pkvm_mark_hyp
KVM: arm64: Refactor protected nVHE stage-1 locking
KVM: arm64: Restrict EL2 stage-1 changes in protected mode
KVM: arm64: Make __pkvm_create_mappings static
Will Deacon (1):
KVM: arm64: Add hyp_spin_is_locked() for basic locking assertions at
EL2
arch/arm64/include/asm/kvm_asm.h | 5 +-
arch/arm64/include/asm/kvm_pgtable.h | 167 ++++++++----
arch/arm64/kvm/Kconfig | 9 +
arch/arm64/kvm/arm.c | 46 ----
arch/arm64/kvm/hyp/include/nvhe/mem_protect.h | 33 ++-
arch/arm64/kvm/hyp/include/nvhe/mm.h | 3 +-
arch/arm64/kvm/hyp/include/nvhe/spinlock.h | 25 ++
arch/arm64/kvm/hyp/nvhe/hyp-main.c | 20 +-
arch/arm64/kvm/hyp/nvhe/mem_protect.c | 225 +++++++++++++---
arch/arm64/kvm/hyp/nvhe/mm.c | 22 +-
arch/arm64/kvm/hyp/nvhe/setup.c | 82 +++++-
arch/arm64/kvm/hyp/pgtable.c | 247 +++++++++---------
arch/arm64/kvm/mmu.c | 28 +-
13 files changed, 628 insertions(+), 284 deletions(-)
--
2.32.0.605.g8dce9f2422-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:[~2021-08-09 15:24 UTC|newest]
Thread overview: 109+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-09 15:24 Quentin Perret [this message]
2021-08-09 15:24 ` [PATCH v4 00/21] Track shared pages at EL2 in protected mode Quentin Perret
2021-08-09 15:24 ` Quentin Perret
2021-08-09 15:24 ` [PATCH v4 01/21] KVM: arm64: Add hyp_spin_is_locked() for basic locking assertions at EL2 Quentin Perret
2021-08-09 15:24 ` Quentin Perret
2021-08-09 15:24 ` Quentin Perret
2021-08-09 15:24 ` [PATCH v4 02/21] KVM: arm64: Introduce hyp_assert_lock_held() Quentin Perret
2021-08-09 15:24 ` Quentin Perret
2021-08-09 15:24 ` Quentin Perret
2021-08-09 15:24 ` [PATCH v4 03/21] KVM: arm64: Provide the host_stage2_try() helper macro Quentin Perret
2021-08-09 15:24 ` Quentin Perret
2021-08-09 15:24 ` Quentin Perret
2021-08-17 13:06 ` Andrew Walbran
2021-08-09 15:24 ` [PATCH v4 04/21] KVM: arm64: Introduce helper to retrieve a PTE and its level Quentin Perret
2021-08-09 15:24 ` Quentin Perret
2021-08-09 15:24 ` Quentin Perret
2021-08-17 13:53 ` Andrew Walbran
2021-08-17 13:53 ` Andrew Walbran
2021-08-17 13:53 ` Andrew Walbran
2021-08-09 15:24 ` [PATCH v4 05/21] KVM: arm64: Expose page-table helpers Quentin Perret
2021-08-09 15:24 ` Quentin Perret
2021-08-09 15:24 ` Quentin Perret
2021-08-10 4:56 ` Fuad Tabba
2021-08-10 4:56 ` Fuad Tabba
2021-08-10 4:56 ` Fuad Tabba
2021-08-09 15:24 ` [PATCH v4 06/21] KVM: arm64: Optimize host memory aborts Quentin Perret
2021-08-09 15:24 ` Quentin Perret
2021-08-09 15:24 ` Quentin Perret
2021-08-09 15:24 ` [PATCH v4 07/21] KVM: arm64: Rename KVM_PTE_LEAF_ATTR_S2_IGNORED Quentin Perret
2021-08-09 15:24 ` Quentin Perret
2021-08-09 15:24 ` Quentin Perret
2021-08-09 15:24 ` [PATCH v4 08/21] KVM: arm64: Don't overwrite software bits with owner id Quentin Perret
2021-08-09 15:24 ` Quentin Perret
2021-08-09 15:24 ` Quentin Perret
2021-08-09 15:24 ` [PATCH v4 09/21] KVM: arm64: Tolerate re-creating hyp mappings to set software bits Quentin Perret
2021-08-09 15:24 ` Quentin Perret
2021-08-09 15:24 ` Quentin Perret
2021-08-09 15:24 ` [PATCH v4 10/21] KVM: arm64: Enable forcing page-level stage-2 mappings Quentin Perret
2021-08-09 15:24 ` Quentin Perret
2021-08-09 15:24 ` Quentin Perret
2021-08-10 4:33 ` Fuad Tabba
2021-08-10 4:33 ` Fuad Tabba
2021-08-10 4:33 ` Fuad Tabba
2021-08-09 15:24 ` [PATCH v4 11/21] KVM: arm64: Allow populating software bits Quentin Perret
2021-08-09 15:24 ` Quentin Perret
2021-08-09 15:24 ` Quentin Perret
2021-08-10 4:56 ` Fuad Tabba
2021-08-10 4:56 ` Fuad Tabba
2021-08-10 4:56 ` Fuad Tabba
2021-08-09 15:24 ` [PATCH v4 12/21] KVM: arm64: Add helpers to tag shared pages in SW bits Quentin Perret
2021-08-09 15:24 ` Quentin Perret
2021-08-09 15:24 ` Quentin Perret
2021-08-09 15:24 ` [PATCH v4 13/21] KVM: arm64: Expose host stage-2 manipulation helpers Quentin Perret
2021-08-09 15:24 ` Quentin Perret
2021-08-09 15:24 ` Quentin Perret
2021-08-10 4:36 ` Fuad Tabba
2021-08-10 4:36 ` Fuad Tabba
2021-08-10 4:36 ` Fuad Tabba
2021-08-09 15:24 ` [PATCH v4 14/21] KVM: arm64: Expose pkvm_hyp_id Quentin Perret
2021-08-09 15:24 ` Quentin Perret
2021-08-09 15:24 ` Quentin Perret
2021-08-10 4:57 ` Fuad Tabba
2021-08-10 4:57 ` Fuad Tabba
2021-08-10 4:57 ` Fuad Tabba
2021-08-09 15:24 ` [PATCH v4 15/21] KVM: arm64: Introduce addr_is_memory() Quentin Perret
2021-08-09 15:24 ` Quentin Perret
2021-08-09 15:24 ` Quentin Perret
2021-08-10 4:37 ` Fuad Tabba
2021-08-10 4:37 ` Fuad Tabba
2021-08-10 4:37 ` Fuad Tabba
2021-08-09 15:24 ` [PATCH v4 16/21] KVM: arm64: Enable retrieving protections attributes of PTEs Quentin Perret
2021-08-09 15:24 ` Quentin Perret
2021-08-09 15:24 ` Quentin Perret
2021-08-10 4:38 ` Fuad Tabba
2021-08-10 4:38 ` Fuad Tabba
2021-08-10 4:38 ` Fuad Tabba
2021-08-09 15:24 ` [PATCH v4 17/21] KVM: arm64: Mark host bss and rodata section as shared Quentin Perret
2021-08-09 15:24 ` Quentin Perret
2021-08-09 15:24 ` Quentin Perret
2021-08-10 4:40 ` Fuad Tabba
2021-08-10 4:40 ` Fuad Tabba
2021-08-10 4:40 ` Fuad Tabba
2021-08-09 15:24 ` [PATCH v4 18/21] KVM: arm64: Remove __pkvm_mark_hyp Quentin Perret
2021-08-09 15:24 ` Quentin Perret
2021-08-09 15:24 ` Quentin Perret
2021-08-10 4:55 ` Fuad Tabba
2021-08-10 4:55 ` Fuad Tabba
2021-08-10 4:55 ` Fuad Tabba
2021-08-09 15:24 ` [PATCH v4 19/21] KVM: arm64: Refactor protected nVHE stage-1 locking Quentin Perret
2021-08-09 15:24 ` Quentin Perret
2021-08-09 15:24 ` Quentin Perret
2021-08-10 4:41 ` Fuad Tabba
2021-08-10 4:41 ` Fuad Tabba
2021-08-10 4:41 ` Fuad Tabba
2021-08-09 15:24 ` [PATCH v4 20/21] KVM: arm64: Restrict EL2 stage-1 changes in protected mode Quentin Perret
2021-08-09 15:24 ` Quentin Perret
2021-08-09 15:24 ` Quentin Perret
2021-08-10 4:43 ` Fuad Tabba
2021-08-10 4:43 ` Fuad Tabba
2021-08-10 4:43 ` Fuad Tabba
2021-08-09 15:24 ` [PATCH v4 21/21] KVM: arm64: Make __pkvm_create_mappings static Quentin Perret
2021-08-09 15:24 ` Quentin Perret
2021-08-09 15:24 ` Quentin Perret
2021-08-10 4:55 ` Fuad Tabba
2021-08-10 4:55 ` Fuad Tabba
2021-08-10 4:55 ` Fuad Tabba
2021-08-11 11:25 ` [PATCH v4 00/21] Track shared pages at EL2 in protected mode Marc Zyngier
2021-08-11 11:25 ` Marc Zyngier
2021-08-11 11:25 ` Marc Zyngier
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20210809152448.1810400-1-qperret@google.com \
--to=qperret@google.com \
--cc=alexandru.elisei@arm.com \
--cc=ardb@kernel.org \
--cc=catalin.marinas@arm.com \
--cc=dbrazdil@google.com \
--cc=james.morse@arm.com \
--cc=kernel-team@android.com \
--cc=kvmarm@lists.cs.columbia.edu \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=maz@kernel.org \
--cc=qwandor@google.com \
--cc=suzuki.poulose@arm.com \
--cc=tabba@google.com \
--cc=will@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.