From: Sean Christopherson <seanjc@google.com>
To: Marc Zyngier <maz@kernel.org>,
Oliver Upton <oliver.upton@linux.dev>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>,
Tianrui Zhao <zhaotianrui@loongson.cn>,
Bibo Mao <maobibo@loongson.cn>,
Huacai Chen <chenhuacai@kernel.org>,
Anup Patel <anup@brainfault.org>,
Paul Walmsley <paul.walmsley@sifive.com>,
Palmer Dabbelt <palmer@dabbelt.com>,
Albert Ou <aou@eecs.berkeley.edu>,
Sean Christopherson <seanjc@google.com>,
Paolo Bonzini <pbonzini@redhat.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
Dave Hansen <dave.hansen@linux.intel.com>,
x86@kernel.org, "K. Y. Srinivasan" <kys@microsoft.com>,
Haiyang Zhang <haiyangz@microsoft.com>,
Wei Liu <wei.liu@kernel.org>, Dexuan Cui <decui@microsoft.com>,
Peter Zijlstra <peterz@infradead.org>,
Andy Lutomirski <luto@kernel.org>,
"Paul E. McKenney" <paulmck@kernel.org>,
Frederic Weisbecker <frederic@kernel.org>,
Neeraj Upadhyay <neeraj.upadhyay@kernel.org>,
Joel Fernandes <joelagnelf@nvidia.com>,
Josh Triplett <josh@joshtriplett.org>,
Boqun Feng <boqun.feng@gmail.com>,
Uladzislau Rezki <urezki@gmail.com>
Cc: linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev,
kvm@vger.kernel.org, loongarch@lists.linux.dev,
kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org,
linux-hyperv@vger.kernel.org, rcu@vger.kernel.org
Subject: [PATCH 0/5] Drivers: hv: Fix NEED_RESCHED_LAZY and use common APIs
Date: Mon, 25 Aug 2025 13:06:17 -0700 [thread overview]
Message-ID: <20250825200622.3759571-1-seanjc@google.com> (raw)
Fix a bug where MSHV root partitions don't honor NEED_RESCHED_LAZY, and then
deduplicate the TIF related MSHV code by turning the "kvm" entry APIs into
more generic "virt" APIs (which ideally would have been done when MSHV root
support was added).
Assuming all is well, maybe this could go through the tip tree?
The Hyper-V stuff and non-x86 architectures are compile-tested only.
Sean Christopherson (5):
Drivers: hv: Move TIF pre-guest work handling fully into mshv_common.c
Drivers: hv: Handle NEED_RESCHED_LAZY before transferring to guest
entry/kvm: KVM: Move KVM details related to signal/-EINTR into KVM
proper
entry: Rename "kvm" entry code assets to "virt" to genericize APIs
Drivers: hv: Use common "entry virt" APIs to do work before running
guest
MAINTAINERS | 2 +-
arch/arm64/kvm/Kconfig | 2 +-
arch/arm64/kvm/arm.c | 3 +-
arch/loongarch/kvm/Kconfig | 2 +-
arch/loongarch/kvm/vcpu.c | 3 +-
arch/riscv/kvm/Kconfig | 2 +-
arch/riscv/kvm/vcpu.c | 3 +-
arch/x86/kvm/Kconfig | 2 +-
arch/x86/kvm/vmx/vmx.c | 1 -
arch/x86/kvm/x86.c | 3 +-
drivers/hv/Kconfig | 1 +
drivers/hv/mshv.h | 2 --
drivers/hv/mshv_common.c | 22 ---------------
drivers/hv/mshv_root_main.c | 31 ++++-----------------
include/linux/{entry-kvm.h => entry-virt.h} | 19 +++++--------
include/linux/kvm_host.h | 17 +++++++++--
include/linux/rcupdate.h | 2 +-
kernel/entry/Makefile | 2 +-
kernel/entry/{kvm.c => virt.c} | 15 ++++------
kernel/rcu/tree.c | 6 ++--
virt/kvm/Kconfig | 2 +-
21 files changed, 49 insertions(+), 93 deletions(-)
rename include/linux/{entry-kvm.h => entry-virt.h} (83%)
rename kernel/entry/{kvm.c => virt.c} (66%)
base-commit: 1b237f190eb3d36f52dffe07a40b5eb210280e00
--
2.51.0.261.g7ce5a0a67e-goog
next reply other threads:[~2025-08-25 20:06 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-08-25 20:06 Sean Christopherson [this message]
2025-08-25 20:06 ` [PATCH 1/5] Drivers: hv: Move TIF pre-guest work handling fully into mshv_common.c Sean Christopherson
2025-08-25 20:06 ` [PATCH 2/5] Drivers: hv: Handle NEED_RESCHED_LAZY before transferring to guest Sean Christopherson
2025-08-25 20:06 ` [PATCH 3/5] entry/kvm: KVM: Move KVM details related to signal/-EINTR into KVM proper Sean Christopherson
2025-08-25 20:06 ` [PATCH 4/5] entry: Rename "kvm" entry code assets to "virt" to genericize APIs Sean Christopherson
2025-08-25 20:06 ` [PATCH 5/5] Drivers: hv: Use common "entry virt" APIs to do work before running guest Sean Christopherson
2025-08-25 21:45 ` [PATCH 0/5] Drivers: hv: Fix NEED_RESCHED_LAZY and use common APIs Wei Liu
2025-08-25 22:23 ` Peter Zijlstra
2025-08-25 22:26 ` Wei Liu
2025-08-25 23:08 ` Nuno Das Neves
2025-08-26 0:27 ` Sean Christopherson
2025-08-26 16:58 ` Wei Liu
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