arm64/kvm: Fine grain _EL2 system registers list that affect nested virtualization

[PATCH v4 0/3] arm64/kvm: Fine grain _EL2 system registers list that affect nested virtualization

Miguel Luis posted 3 patches 2 years, 2 months ago

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arch/arm64/include/asm/sysreg.h | 50 ++++++++++++++++++
arch/arm64/kvm/emulate-nested.c | 89 ++++++++++++++++++++++++++++++---
2 files changed, 133 insertions(+), 6 deletions(-)

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[PATCH v4 0/3] arm64/kvm: Fine grain _EL2 system registers list that affect nested virtualization

Posted by Miguel Luis 2 years, 2 months ago

The current HCR_EL2 description defines ranges of system register encodings in
which accesses should trap for NV. These ranges include encodings which aren't
defined in the reference manual. In order avoid this, let's rather implement a
more fine grained approach excluding those undefined.

v3 -> v4
 patch 2:
	Add BRBCR_EL2.
 patch 3:
	Handle BRBCR_EL2.
	Add Eric's R-b. Thanks!

v3: https://lore.kernel.org/kvmarm/20231011180103.91774-1-miguel.luis@oracle.com/
v2: https://lore.kernel.org/kvmarm/20230925162057.27548-1-miguel.luis@oracle.com/
v1: https://lore.kernel.org/kvmarm/20230913185209.32282-1-miguel.luis@oracle.com/

Miguel Luis (3):
  arm64: Add missing _EL12 encodings
  arm64: Add missing _EL2 encodings
  arm64/kvm: Fine grain _EL2 system registers list that affect nested
    virtualization

 arch/arm64/include/asm/sysreg.h | 50 ++++++++++++++++++
 arch/arm64/kvm/emulate-nested.c | 89 ++++++++++++++++++++++++++++++---
 2 files changed, 133 insertions(+), 6 deletions(-)

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2.39.2