From: Haren Myneni <haren@linux.ibm.com>
To: mpe@ellerman.id.au
Cc: mikey@neuling.org, ajd@linux.ibm.com, frederic.barrat@fr.ibm.com,
linux-kernel@vger.kernel.org, npiggin@gmail.com,
hch@infradead.org, oohall@gmail.com, clg@kaod.org,
herbert@gondor.apana.org.au, sukadev@linux.vnet.ibm.com,
linuxppc-dev@lists.ozlabs.org, srikar@linux.vnet.ibm.com
Subject: [PATCH v10 13/14] powerpc/vas: Free send window in VAS instance after credits returned
Date: Thu, 02 Apr 2020 00:19:19 -0700 [thread overview]
Message-ID: <1585811959.2275.65.camel@hbabu-laptop> (raw)
In-Reply-To: <1585810846.2275.23.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 3d80f37..3ffad5a 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:[~2020-04-02 7:41 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-02 7:00 [PATCH v10 00/14] powerpc/vas: Page fault handling for user space NX requests Haren Myneni
2020-04-02 7:09 ` [PATCH v10 01/14] powerpc/xive: Define xive_native_alloc_irq_on_chip() Haren Myneni
2020-04-02 7:09 ` [PATCH v10 02/14] powerpc/vas: Define nx_fault_stamp in coprocessor_request_block Haren Myneni
2020-04-02 7:10 ` [PATCH v10 03/14] powerpc/vas: Alloc and setup IRQ and trigger port address Haren Myneni
2020-04-02 8:08 ` Cédric Le Goater
2020-04-02 7:11 ` [PATCH v10 04/14] powerpc/vas: Setup fault window per VAS instance Haren Myneni
2020-04-02 7:11 ` [PATCH v10 05/14] powerpc/vas: Register NX with fault window ID and IRQ port value Haren Myneni
2020-04-02 7:13 ` [PATCH v10 06/14] powerpc/vas: Take reference to PID and mm for user space windows Haren Myneni
2020-04-02 7:13 ` [PATCH v10 07/14] powerpc/vas: Setup thread IRQ handler per VAS instance Haren Myneni
2020-04-02 7:14 ` [PATCH v10 08/14] powerpc/vas: Update CSB and notify process for fault CRBs Haren Myneni
2020-04-02 7:15 ` [PATCH v10 09/14] powerpc/vas: Return credits after handling fault Haren Myneni
2020-04-02 7:16 ` [PATCH v10 10/14] powerpc/vas: Print CRB and FIFO values Haren Myneni
2020-04-02 7:17 ` [PATCH v10 11/14] powerpc/vas: Do not use default credits for receive window Haren Myneni
2020-04-02 7:18 ` [PATCH v10 12/14] powerpc/vas: Display process stuck message Haren Myneni
2020-04-02 7:19 ` Haren Myneni [this message]
2020-04-02 7:20 ` [PATCH v10 14/14] powerpc: Use mm_context vas_windows counter to issue CP_ABORT Haren Myneni
2020-04-11 10:28 ` Michael Ellerman
2020-04-14 7:54 ` Haren Myneni
2020-04-03 8:19 ` [PATCH v10 00/14] powerpc/vas: Page fault handling for user space NX requests Cédric Le Goater
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