diff options
| author | Jing Zhang <jingzhangos@google.com> | 2023-06-09 19:00:49 +0000 |
|---|---|---|
| committer | Oliver Upton <oliver.upton@linux.dev> | 2023-06-15 12:55:08 +0000 |
| commit | 473341469042b39535ee800a19c45110ebc46346 (patch) | |
| tree | a29a5b091843657c0ce90399f61c3d1c8abed5e6 /arch/arm64/kvm/sys_regs.h | |
| parent | d86cde6e335fa442c6b0866562140a2bef25402a (diff) | |
KVM: arm64: Save ID registers' sanitized value per guest
Initialize the default ID register values upon the first call to
KVM_ARM_VCPU_INIT. The vCPU feature flags are finalized at that point,
so it is possible to determine the maximum feature set supported by a
particular VM configuration. Do nothing with these values for now, as we
need to rework the plumbing of what's already writable to be compatible
with the generic infrastructure.
Co-developed-by: Reiji Watanabe <reijiw@google.com>
Signed-off-by: Reiji Watanabe <reijiw@google.com>
Signed-off-by: Jing Zhang <jingzhangos@google.com>
Link: https://lore.kernel.org/r/20230609190054.1542113-7-oliver.upton@linux.dev
[Oliver: Hoist everything into KVM_ARM_VCPU_INIT time, so the features
are final]
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
Diffstat (limited to 'arch/arm64/kvm/sys_regs.h')
| -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 63bca7521dfd..c65c129b3500 100644 --- a/arch/arm64/kvm/sys_regs.h +++ b/arch/arm64/kvm/sys_regs.h @@ -27,6 +27,13 @@ struct sys_reg_params { bool is_write; }; +#define encoding_to_params(reg) \ + ((struct sys_reg_params){ .Op0 = sys_reg_Op0(reg), \ + .Op1 = sys_reg_Op1(reg), \ + .CRn = sys_reg_CRn(reg), \ + .CRm = sys_reg_CRm(reg), \ + .Op2 = sys_reg_Op2(reg) }) + #define esr_sys64_to_params(esr) \ ((struct sys_reg_params){ .Op0 = ((esr) >> 20) & 3, \ .Op1 = ((esr) >> 14) & 0x7, \ |