diff options
| author | Marc Zyngier <maz@kernel.org> | 2024-08-20 14:18:00 +0100 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2024-08-27 07:59:27 +0100 |
| commit | 6d7307651a8a021e7286e90264676b893cb6032d (patch) | |
| tree | e9a76684550391863919e162935ef08cbb8a4a03 | |
| parent | b8f669b491ec4693d07126b20db0fbe747556d11 (diff) | |
KVM: arm64: Expose ID_AA64FPFR0_EL1 as a writable ID reg
ID_AA64FPFR0_EL1 contains all sort of bits that contain a description
of which FP8 subfeatures are implemented.
We don't really care about them, so let's just expose that register
and allow userspace to disable subfeatures at will.
Reviewed-by: Mark Brown <broonie@kernel.org>
Tested-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20240820131802.3547589-7-maz@kernel.org
Signed-off-by: Marc Zyngier <maz@kernel.org>
| -rw-r--r-- | arch/arm64/kvm/sys_regs.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c index 79d67f19130d..4c2f7c0af537 100644 --- a/arch/arm64/kvm/sys_regs.c +++ b/arch/arm64/kvm/sys_regs.c @@ -2386,7 +2386,7 @@ static const struct sys_reg_desc sys_reg_descs[] = { ID_WRITABLE(ID_AA64ZFR0_EL1, ~ID_AA64ZFR0_EL1_RES0), ID_HIDDEN(ID_AA64SMFR0_EL1), ID_UNALLOCATED(4,6), - ID_UNALLOCATED(4,7), + ID_WRITABLE(ID_AA64FPFR0_EL1, ~ID_AA64FPFR0_EL1_RES0), /* CRm=5 */ { SYS_DESC(SYS_ID_AA64DFR0_EL1), |