Thread (13 messages) 13 messages, 5 authors, 2020-02-24
STALE2322d

[PATCH 0/3] KVM: arm64: Ask the compiler to __always_inline functions used by KVM at HYP

From: James Morse <james.morse@arm.com>
Date: 2020-02-20 16:59:01
Also in: kvmarm

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/ (local)

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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