On Fri, Jun 24, 2022 at 02:32:51PM -0700, Ricardo Koller wrote:
> Define macros for memory type indexes and construct DEFAULT_MAIR_EL1
> with macros from asm/sysreg.h. The index macros can then be used when
> constructing PTEs (instead of using raw numbers).
>
> Reviewed-by: Oliver Upton <oup...@google.com>
> Signed-off-by: Ricardo Koller <ricar...@google.com>
> ---
> .../selftests/kvm/include/aarch64/processor.h | 25 ++++++++++++++-----
> .../selftests/kvm/lib/aarch64/processor.c | 2 +-
> 2 files changed, 20 insertions(+), 7 deletions(-)
>
> diff --git a/tools/testing/selftests/kvm/include/aarch64/processor.h
> b/tools/testing/selftests/kvm/include/aarch64/processor.h
> index 6649671fa7c1..74f10d006e15 100644
> --- a/tools/testing/selftests/kvm/include/aarch64/processor.h
> +++ b/tools/testing/selftests/kvm/include/aarch64/processor.h
> @@ -38,12 +38,25 @@
> * NORMAL 4 1111:1111
> * NORMAL_WT 5 1011:1011
> */
> -#define DEFAULT_MAIR_EL1 ((0x00ul << (0 * 8)) | \
> - (0x04ul << (1 * 8)) | \
> - (0x0cul << (2 * 8)) | \
> - (0x44ul << (3 * 8)) | \
> - (0xfful << (4 * 8)) | \
> - (0xbbul << (5 * 8)))
> +
> +/* Linux doesn't use these memory types, so let's define them. */
> +#define MAIR_ATTR_DEVICE_GRE UL(0x0c)
> +#define MAIR_ATTR_NORMAL_WT UL(0xbb)
> +
> +#define MT_DEVICE_nGnRnE 0
> +#define MT_DEVICE_nGnRE 1
> +#define MT_DEVICE_GRE 2
> +#define MT_NORMAL_NC 3
> +#define MT_NORMAL 4
> +#define MT_NORMAL_WT 5
> +
> +#define DEFAULT_MAIR_EL1
> \
> + (MAIR_ATTRIDX(MAIR_ATTR_DEVICE_nGnRnE, MT_DEVICE_nGnRnE) |
> \
> + MAIR_ATTRIDX(MAIR_ATTR_DEVICE_nGnRE, MT_DEVICE_nGnRE) |
> \
> + MAIR_ATTRIDX(MAIR_ATTR_DEVICE_GRE, MT_DEVICE_GRE) |
> \
> + MAIR_ATTRIDX(MAIR_ATTR_NORMAL_NC, MT_NORMAL_NC) |
> \
> + MAIR_ATTRIDX(MAIR_ATTR_NORMAL, MT_NORMAL) |
> \
> + MAIR_ATTRIDX(MAIR_ATTR_NORMAL_WT, MT_NORMAL_WT))
>
> #define MPIDR_HWID_BITMASK (0xff00fffffful)
>
> diff --git a/tools/testing/selftests/kvm/lib/aarch64/processor.c
> b/tools/testing/selftests/kvm/lib/aarch64/processor.c
> index 8dd511aa79c2..733a2b713580 100644
> --- a/tools/testing/selftests/kvm/lib/aarch64/processor.c
> +++ b/tools/testing/selftests/kvm/lib/aarch64/processor.c
> @@ -133,7 +133,7 @@ void _virt_pg_map(struct kvm_vm *vm, uint64_t vaddr,
> uint64_t paddr,
>
> void virt_arch_pg_map(struct kvm_vm *vm, uint64_t vaddr, uint64_t paddr)
> {
> - uint64_t attr_idx = 4; /* NORMAL (See DEFAULT_MAIR_EL1) */
> + uint64_t attr_idx = MT_NORMAL;
>
> _virt_pg_map(vm, vaddr, paddr, attr_idx, 0);
> }
> --
> 2.37.0.rc0.161.g10f37bed90-goog
>
Reviewed-by: Andrew Jones <andrew.jo...@linux.dev>
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