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ANDROID: KVM: arm64: Fix MMIO guard documentation

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Firstly, the hypercall IDs have been renumbered but that was not
reflected in the documentation. Secondly, the argument registers r1-r3
are checked to be zero when calling
ARM_SMCCC_KVM_FUNC_MMIO_GUARD_INFO.

Signed-off-by: Keir Fraser <keirf@google.com>
Bug: 265943840
Change-Id: I9684d1e71af7d8627d079cfd89d437cfc28be09f
This commit is contained in:
Keir Fraser
2023-01-24 11:22:48 +00:00
parent dc6c680327
commit eaebecf53e
1 changed files with 5 additions and 5 deletions
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10
Documentation/virt/kvm/arm/mmio-guard.rst
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@@ -30,8 +30,8 @@ using the HVC64 calling convention.
* ARM_SMCCC_KVM_FUNC_MMIO_GUARD_INFO
============== ======== ================================
Function ID: (uint32) 0xC6000002
Arguments: none
Function ID: (uint32) 0xC6000005
Arguments: r1-r3 Reserved / Must be zero
Return Values: (int64) NOT_SUPPORTED(-1) on error, or
(uint64) Protection Granule (PG) size in
bytes (r0)
@@ -40,7 +40,7 @@ using the HVC64 calling convention.
* ARM_SMCCC_KVM_FUNC_MMIO_GUARD_ENROLL
============== ======== ==============================
Function ID: (uint32) 0xC6000003
Function ID: (uint32) 0xC6000006
Arguments: none
Return Values: (int64) NOT_SUPPORTED(-1) on error, or
RET_SUCCESS(0) (r0)
@@ -49,7 +49,7 @@ using the HVC64 calling convention.
* ARM_SMCCC_KVM_FUNC_MMIO_GUARD_MAP
============== ======== ====================================
Function ID: (uint32) 0xC6000004
Function ID: (uint32) 0xC6000007
Arguments: (uint64) The base of the PG-sized IPA range
that is allowed to be accessed as
MMIO. Must be aligned to the PG size
@@ -64,7 +64,7 @@ using the HVC64 calling convention.
* ARM_SMCCC_KVM_FUNC_MMIO_GUARD_UNMAP
============== ======== ======================================
Function ID: (uint32) 0xC6000005
Function ID: (uint32) 0xC6000008
Arguments: (uint64) PG-sized IPA range aligned to the PG
size which has been previously mapped.
Must be aligned to the PG size and