From: James Morse <james.morse@arm.com>
To: linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>,
Marc Zyngier <maz@kernel.org>,
Sami Tolvanen <samitolvanen@google.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>
Subject: [PATCH 0/3] KVM: arm64: Ask the compiler to __always_inline functions used by KVM at HYP
Date: Thu, 20 Feb 2020 16:58:36 +0000 [thread overview]
Message-ID: <20200220165839.256881-1-james.morse@arm.com> (raw)
Hello!
It turns out KVM relies on the inline hint being honoured by the compiler
in quite a few more places than expected. Something about the Shadow Call
Stack support[0] causes the compiler to avoid inline-ing and to place
these functions outside the __hyp_text. This ruins KVM's day.
Add the simon-says __always_inline annotation to all the static
inlines that KVM calls from HYP code.
This series based on v5.6-rc2.
[0] https://lore.kernel.org/linux-arm-kernel/20200219000817.195049-1-samitolvanen@google.com/
Thanks,
James Morse (3):
KVM: arm64: Ask the compiler to __always_inline functions used at HYP
KVM: arm64: define our own swab32() to avoid a uapi static inline
arm64: Ask the compiler to __always_inline functions used by KVM at
HYP
arch/arm64/include/asm/arch_gicv3.h | 2 +-
arch/arm64/include/asm/cache.h | 2 +-
arch/arm64/include/asm/cacheflush.h | 2 +-
arch/arm64/include/asm/cpufeature.h | 10 ++---
arch/arm64/include/asm/io.h | 4 +-
arch/arm64/include/asm/kvm_emulate.h | 48 ++++++++++++------------
arch/arm64/include/asm/kvm_hyp.h | 7 ++++
arch/arm64/include/asm/kvm_mmu.h | 3 +-
arch/arm64/include/asm/virt.h | 2 +-
arch/arm64/kvm/hyp/vgic-v2-cpuif-proxy.c | 4 +-
10 files changed, 46 insertions(+), 38 deletions(-)
--
2.24.1
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next reply other threads:[~2020-02-20 16:58 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-20 16:58 James Morse [this message]
2020-02-20 16:58 ` [PATCH 1/3] KVM: arm64: Ask the compiler to __always_inline functions used at HYP James Morse
2020-02-20 16:58 ` [PATCH 2/3] KVM: arm64: define our own swab32() to avoid a uapi static inline James Morse
2020-02-20 16:58 ` [PATCH 3/3] arm64: Ask the compiler to __always_inline functions used by KVM at HYP James Morse
2020-02-21 13:13 ` Will Deacon
2020-02-21 13:22 ` Ard Biesheuvel
2020-02-20 17:04 ` [PATCH 0/3] KVM: " Ard Biesheuvel
2020-02-20 17:33 ` James Morse
2020-02-20 17:35 ` Ard Biesheuvel
2020-02-21 12:55 ` Marc Zyngier
2020-02-21 14:57 ` James Morse
2020-02-21 16:38 ` Marc Zyngier
2020-02-24 13:22 ` Andrew Jones
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