Re: [PATCH] x86,spinlock: make disabling virt_spin_lock_key contingent on CONFIG_PARAVIRT

[Jürgen Groß]

On 15.07.24 19:18, Rik van Riel wrote:
> The existence of virt_spin_lock_key is contingent only on CONFIG_PARAVIRT, not
> on CONFIG_PARAVIRT_SPINLOCKS.
>
> As a result, a kernel with CONFIG_PARAVIRT enabled, but CONFIG_PARAVIRT_SPINLOCKS
> disabled will end up disabling queued spinlocks when running on bare metal.
>
> Making the disabling of virt_spin_lock_key contingent on CONFIG_PARAVIRT, which
> controls whether the key exists, results in queued spinlocks being enabled on
> bare metal again.
>
> Signed-off-by: Rik van Riel <riel@xxxxxxxxxxx>
> Cc: stable@xxxxxxxxxxxxxxx
> Fixes: ce0a1b608bfc ("x86/paravirt: Silence unused native_pv_lock_init() function warning")

Reviewed-by: Juergen Gross <jgross@xxxxxxxx>


Juergen