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| author | Marc Zyngier <maz@kernel.org> | 2020-10-29 17:09:12 +0000 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2020-11-10 11:22:51 +0000 |
| commit | 6ed6750f2b6d4a51f27615f3323d1850449299e3 (patch) | |
| tree | 7f0b17fa3bac1f3ad07339bac3f627d5493876f7 /arch/arm64/kvm | |
| parent | 4ff3fc316d78daa2ed6de2f13616fb33a2926d8e (diff) | |
| download | linux-6ed6750f2b6d4a51f27615f3323d1850449299e3.tar.gz linux-6ed6750f2b6d4a51f27615f3323d1850449299e3.tar.bz2 linux-6ed6750f2b6d4a51f27615f3323d1850449299e3.zip | |
KVM: arm64: Add AArch32 mapping annotation
In order to deal with the few AArch32 system registers that map to
only a particular half of their AArch64 counterpart (such as DFAR
and IFAR being colocated in FAR_EL1), let's add an optional annotation
to the sysreg descriptor structure, indicating whether a register
maps to the upper or lower 32bits of a register.
Nothing is using these annotation yet.
Signed-off-by: Marc Zyngier <maz@kernel.org>
Diffstat (limited to 'arch/arm64/kvm')
| -rw-r--r-- | arch/arm64/kvm/sys_regs.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/arm64/kvm/sys_regs.h b/arch/arm64/kvm/sys_regs.h index 5a6fc30f5989..259864c3c76b 100644 --- a/arch/arm64/kvm/sys_regs.h +++ b/arch/arm64/kvm/sys_regs.h @@ -27,6 +27,12 @@ struct sys_reg_desc { /* Sysreg string for debug */ const char *name; + enum { + AA32_ZEROHIGH, + AA32_LO, + AA32_HI, + } aarch32_map; + /* MRS/MSR instruction which accesses it. */ u8 Op0; u8 Op1; @@ -153,6 +159,7 @@ const struct sys_reg_desc *find_reg_by_id(u64 id, const struct sys_reg_desc table[], unsigned int num); +#define AA32(_x) .aarch32_map = AA32_##_x #define Op0(_x) .Op0 = _x #define Op1(_x) .Op1 = _x #define CRn(_x) .CRn = _x |