Re: [PATCH v2 4/4] hw/cxl/events: discard all event records during sanitation

[Jonathan Cameron via <qemu-devel@nongnu.org>]

On Mon, 1 Jan 2024 13:38:28 -0800
Davidlohr Bueso <dave@stgolabs.net> wrote:

> On Fri, 22 Dec 2023, Hyeonggon Yoo wrote:
> 
> >Per spec 8.2.9.9.5.1 Sanitize (Opcode 4400h), sanitize command should
> >delete all event logs. Introduce cxl_discard_all_event_logs() and call
> >this in __do_sanitization().  
> 
> lgtm
> 
> Reviewed-by: Davidlohr Bueso <dave@stgolabs.net>

I'll carry this on my tree on top of where I put the previous patch.
Seems to apply there at least :)

If it makes sense to remix these patches a bit to provide cleaner
history I'll do so once these are ready to send for Michael to look
at.

Jonathan

> 
> >Signed-off-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
> >---
> > hw/cxl/cxl-events.c         | 13 +++++++++++++
> > hw/cxl/cxl-mailbox-utils.c  |  1 +
> > include/hw/cxl/cxl_device.h |  1 +
> > 3 files changed, 15 insertions(+)
> >
> >diff --git a/hw/cxl/cxl-events.c b/hw/cxl/cxl-events.c
> >index bee6dfaf14..837b18ab47 100644
> >--- a/hw/cxl/cxl-events.c
> >+++ b/hw/cxl/cxl-events.c
> >@@ -141,6 +141,19 @@ bool cxl_event_insert(CXLDeviceState *cxlds, CXLEventLogType log_type,
> >     return cxl_event_count(log) == 1;
> > }
> >
> >+void cxl_discard_all_event_records(CXLDeviceState *cxlds)
> >+{
> >+    CXLEventLogType log_type;
> >+    CXLEventLog *log;
> >+
> >+    for (log_type = 0; log_type < CXL_EVENT_TYPE_MAX; log_type++) {
> >+        log = &cxlds->event_logs[log_type];
> >+        while (!cxl_event_empty(log)) {
> >+            cxl_event_delete_head(cxlds, log_type, log);
> >+        }
> >+    }
> >+}
> >+
> > CXLRetCode cxl_event_get_records(CXLDeviceState *cxlds, CXLGetEventPayload *pl,
> >                                  uint8_t log_type, int max_recs,
> >                                  size_t *len)
> >diff --git a/hw/cxl/cxl-mailbox-utils.c b/hw/cxl/cxl-mailbox-utils.c
> >index efeb5f8174..2ade351d82 100644
> >--- a/hw/cxl/cxl-mailbox-utils.c
> >+++ b/hw/cxl/cxl-mailbox-utils.c
> >@@ -1150,6 +1150,7 @@ static void __do_sanitization(CXLType3Dev *ct3d)
> >             memset(lsa, 0, memory_region_size(mr));
> >         }
> >     }
> >+    cxl_discard_all_event_records(&ct3d->cxl_dstate);
> > }
> >
> > /*
> >diff --git a/include/hw/cxl/cxl_device.h b/include/hw/cxl/cxl_device.h
> >index 5618061ebe..8f05dd9beb 100644
> >--- a/include/hw/cxl/cxl_device.h
> >+++ b/include/hw/cxl/cxl_device.h
> >@@ -604,6 +604,7 @@ CXLRetCode cxl_event_get_records(CXLDeviceState *cxlds, CXLGetEventPayload *pl,
> >                                  size_t *len);
> > CXLRetCode cxl_event_clear_records(CXLDeviceState *cxlds,
> >                                    CXLClearEventPayload *pl);
> >+void cxl_discard_all_event_records(CXLDeviceState *cxlds);
> >
> > void cxl_event_irq_assert(CXLType3Dev *ct3d);
> >
> >-- 
> >2.39.3
> >