From: Haren Myneni <haren@linux.ibm.com>
To: mpe@ellerman.id.au
Cc: mikey@neuling.org, srikar@linux.vnet.ibm.com,
frederic.barrat@fr.ibm.com, ajd@linux.ibm.com,
linux-kernel@vger.kernel.org, npiggin@gmail.com,
hch@infradead.org, oohall@gmail.com, clg@kaod.org,
sukadev@linux.vnet.ibm.com, linuxppc-dev@lists.ozlabs.org,
herbert@gondor.apana.org.au
Subject: [PATCH v11 13/14] powerpc/vas: Free send window in VAS instance after credits returned
Date: Wed, 15 Apr 2020 23:07:36 -0700 [thread overview]
Message-ID: <1587017256.2275.1076.camel@hbabu-laptop> (raw)
In-Reply-To: <1587016214.2275.1036.camel@hbabu-laptop>
NX may be processing requests while trying to close window. Wait until
all credits are returned and then free send window from VAS instance.
Signed-off-by: Haren Myneni <haren@linux.ibm.com>
---
arch/powerpc/platforms/powernv/vas-window.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/platforms/powernv/vas-window.c b/arch/powerpc/platforms/powernv/vas-window.c
index d0c07cf..e15b405 100644
--- a/arch/powerpc/platforms/powernv/vas-window.c
+++ b/arch/powerpc/platforms/powernv/vas-window.c
@@ -1316,14 +1316,14 @@ int vas_win_close(struct vas_window *window)
unmap_paste_region(window);
- clear_vinst_win(window);
-
poll_window_busy_state(window);
unpin_close_window(window);
poll_window_credits(window);
+ clear_vinst_win(window);
+
poll_window_castout(window);
/* if send window, drop reference to matching receive window */
--
1.8.3.1
next prev parent reply other threads:[~2020-04-16 6:31 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-16 5:50 [PATCH v11 00/14] powerpc/vas: Page fault handling for user space NX requests Haren Myneni
2020-04-16 5:58 ` [PATCH v11 01/14] powerpc/xive: Define xive_native_alloc_irq_on_chip() Haren Myneni
2020-04-21 14:09 ` Michael Ellerman
2020-04-16 5:59 ` [PATCH v11 02/14] powerpc/vas: Define nx_fault_stamp in coprocessor_request_block Haren Myneni
2020-04-16 6:00 ` [PATCH v11 03/14] powerpc/vas: Alloc and setup IRQ and trigger port address Haren Myneni
2020-04-16 6:00 ` [PATCH v11 04/14] powerpc/vas: Setup fault window per VAS instance Haren Myneni
2020-04-16 6:01 ` [PATCH v11 05/14] powerpc/vas: Register NX with fault window ID and IRQ port value Haren Myneni
2020-04-16 6:02 ` [PATCH v11 06/14] powerpc/vas: Take reference to PID and mm for user space windows Haren Myneni
2020-04-16 6:03 ` [PATCH v11 07/14] powerpc/vas: Setup thread IRQ handler per VAS instance Haren Myneni
2020-04-16 6:03 ` [PATCH v11 08/14] powerpc/vas: Update CSB and notify process for fault CRBs Haren Myneni
2020-04-16 6:04 ` [PATCH v11 09/14] powerpc/vas: Return credits after handling fault Haren Myneni
2020-04-16 6:04 ` [PATCH v11 10/14] powerpc/vas: Print CRB and FIFO values Haren Myneni
2020-04-16 6:05 ` [PATCH v11 11/14] powerpc/vas: Do not use default credits for receive window Haren Myneni
2020-04-16 6:06 ` [PATCH v11 12/14] powerpc/vas: Display process stuck message Haren Myneni
2020-04-16 6:07 ` Haren Myneni [this message]
2020-04-16 6:08 ` [PATCH v11 14/14] powerpc: Use mm_context vas_windows counter to issue CP_ABORT Haren Myneni
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