diff options
| author | Oliver Upton <oliver.upton@linux.dev> | 2024-02-27 09:41:14 +0000 |
|---|---|---|
| committer | Oliver Upton <oliver.upton@linux.dev> | 2024-02-27 19:19:05 +0000 |
| commit | 29ef55cec33de325562c6c056b167f58d61ddab0 (patch) | |
| tree | ab4376ce898a4ac67de33c15caef6e03bc51b5d2 | |
| parent | 99101dda29e3186b1356b0dc4dbb835c02c71ac9 (diff) | |
KVM: arm64: Fail the idreg iterator if idregs aren't initialized
Return an error to userspace if the VM's ID register values haven't been
initialized in preparation for changing the debugfs file initialization
order.
Reviewed-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20240227094115.1723330-2-oliver.upton@linux.dev
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
| -rw-r--r-- | arch/arm64/kvm/sys_regs.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c index e3faedc8b7a3..e9319d90d66f 100644 --- a/arch/arm64/kvm/sys_regs.c +++ b/arch/arm64/kvm/sys_regs.c @@ -3431,7 +3431,8 @@ static void *idregs_debug_start(struct seq_file *s, loff_t *pos) mutex_lock(&kvm->arch.config_lock); iter = &kvm->arch.idreg_debugfs_iter; - if (*iter == (u8)~0) { + if (test_bit(KVM_ARCH_FLAG_ID_REGS_INITIALIZED, &kvm->arch.flags) && + *iter == (u8)~0) { *iter = *pos; if (*iter >= KVM_ARM_ID_REG_NUM) iter = NULL; |