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| author | Paolo Bonzini <pbonzini@redhat.com> | 2023-07-01 07:04:29 -0400 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2023-07-01 07:04:29 -0400 |
| commit | cc744042d90809ccb7cac7f9fb773f5c9cb9f835 (patch) | |
| tree | ff26add0ac2a17b15bb7b789f276623aae7e8201 /include/linux/arm_ffa.h | |
| parent | b5396271eab4ec28f0d27ff48e1b151b7b824295 (diff) | |
| parent | 192df2aa0113ddddee2a93e453ff46610807b425 (diff) | |
Merge tag 'kvmarm-6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD
KVM/arm64 updates for 6.5
- Eager page splitting optimization for dirty logging, optionally
allowing for a VM to avoid the cost of block splitting in the stage-2
fault path.
- Arm FF-A proxy for pKVM, allowing a pKVM host to safely interact with
services that live in the Secure world. pKVM intervenes on FF-A calls
to guarantee the host doesn't misuse memory donated to the hyp or a
pKVM guest.
- Support for running the split hypervisor with VHE enabled, known as
'hVHE' mode. This is extremely useful for testing the split
hypervisor on VHE-only systems, and paves the way for new use cases
that depend on having two TTBRs available at EL2.
- Generalized framework for configurable ID registers from userspace.
KVM/arm64 currently prevents arbitrary CPU feature set configuration
from userspace, but the intent is to relax this limitation and allow
userspace to select a feature set consistent with the CPU.
- Enable the use of Branch Target Identification (FEAT_BTI) in the
hypervisor.
- Use a separate set of pointer authentication keys for the hypervisor
when running in protected mode, as the host is untrusted at runtime.
- Ensure timer IRQs are consistently released in the init failure
paths.
- Avoid trapping CTR_EL0 on systems with Enhanced Virtualization Traps
(FEAT_EVT), as it is a register commonly read from userspace.
- Erratum workaround for the upcoming AmpereOne part, which has broken
hardware A/D state management.
As a consequence of the hVHE series reworking the arm64 software
features framework, the for-next/module-alloc branch from the arm64 tree
comes along for the ride.
Diffstat (limited to 'include/linux/arm_ffa.h')
| -rw-r--r-- | include/linux/arm_ffa.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/arm_ffa.h b/include/linux/arm_ffa.h index 583fe3b49a49..cc060da51bec 100644 --- a/include/linux/arm_ffa.h +++ b/include/linux/arm_ffa.h @@ -94,6 +94,14 @@ */ #define FFA_PAGE_SIZE SZ_4K +/* + * Minimum buffer size/alignment encodings returned by an FFA_FEATURES + * query for FFA_RXTX_MAP. + */ +#define FFA_FEAT_RXTX_MIN_SZ_4K 0 +#define FFA_FEAT_RXTX_MIN_SZ_64K 1 +#define FFA_FEAT_RXTX_MIN_SZ_16K 2 + /* FFA Bus/Device/Driver related */ struct ffa_device { u32 id; |