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Re: [PATCH] tools/libs/evtchn: drop assert()s in stubdom
- To: Jason Andryuk <jandryuk@xxxxxxxxx>
- From: Juergen Gross <jgross@xxxxxxxx>
- Date: Wed, 6 Dec 2023 17:44:21 +0100
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- Cc: xen-devel@xxxxxxxxxxxxxxxxxxxx, Wei Liu <wl@xxxxxxx>, Anthony PERARD <anthony.perard@xxxxxxxxxx>
- Delivery-date: Wed, 06 Dec 2023 16:44:31 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 06.12.23 17:38, Jason Andryuk wrote:
On Wed, Dec 6, 2023 at 9:40 AM Juergen Gross <jgross@xxxxxxxx> wrote:
In tools/libs/evtchn/minios.c there are assert()s for the current
thread being the main thread when binding an event channel.
As Mini-OS is supporting multiple threads, there is no real reason
why the binding shouldn't be allowed to happen in any other thread.
Just drop the assert()s.
Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
---
tools/libs/evtchn/minios.c | 3 ---
1 file changed, 3 deletions(-)
diff --git a/tools/libs/evtchn/minios.c b/tools/libs/evtchn/minios.c
index 28743cb055..e33ddec7e7 100644
--- a/tools/libs/evtchn/minios.c
+++ b/tools/libs/evtchn/minios.c
@@ -195,7 +195,6 @@ xenevtchn_port_or_error_t
xenevtchn_bind_unbound_port(xenevtchn_handle *xce,
int ret;
evtchn_port_t port;
- assert(get_current() == main_thread);
port_info = port_alloc(xce);
If multiple threads are allowed, does port_list need to gain a lock
protecting it?
I thought of that, too.
The answer is: maybe
Any other list operation on the list isn't protected by an assert(), so
technically there is no real new aspect added in this regard.
I believe adding a lock would make sense, but it is orthogonal to this
patch.
Juergen
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