devicetree.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Haren Myneni <haren@linux.ibm.com>
To: mpe@ellerman.id.au
Cc: hch@infradead.org, mikey@neuling.org, npiggin@gmail.com,
	herbert@gondor.apana.org.au, linuxppc-dev@lists.ozlabs.org,
	devicetree@vger.kernel.org, sukadev@linux.vnet.ibm.com
Subject: [PATCH V2 13/13] powerpc/vas: Free send window in VAS instance after credits returned
Date: Sun, 08 Dec 2019 19:37:23 -0800	[thread overview]
Message-ID: <1575862643.16318.31.camel@hbabu-laptop> (raw)
In-Reply-To: <1575861522.16318.9.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@us.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 578f144..5322d1c 100644
--- a/arch/powerpc/platforms/powernv/vas-window.c
+++ b/arch/powerpc/platforms/powernv/vas-window.c
@@ -1309,14 +1309,14 @@ 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




  parent reply	other threads:[~2019-12-09  3:39 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-12-09  3:18 [PATCH V2 00/13] powerpc/vas: Page fault handling for user space NX requests Haren Myneni
2019-12-09  3:26 ` [PATCH V2 01/13] powerpc/vas: Describe vas-port and interrupts properties Haren Myneni
2019-12-09  3:27 ` [PATCH V2 02/13] powerpc/vas: Define nx_fault_stamp in coprocessor_request_block Haren Myneni
2019-12-09  3:29 ` [PATCH V2 03/13] powerpc/vas: Read interrupts and vas-port device tree properties Haren Myneni
2019-12-09  3:30 ` [PATCH V2 04/13] powerpc/vas: Setup fault window per VAS instance Haren Myneni
2019-12-12 12:55   ` Christoph Hellwig
2019-12-09  3:31 ` [PATCH V2 05/13] powerpc/vas: Setup thread IRQ handler " Haren Myneni
2019-12-12 12:59   ` Christoph Hellwig
2019-12-09  3:32 ` [PATCH V2 06/13] powerpc/vas: Register NX with fault window ID and IRQ port value Haren Myneni
2019-12-09  3:32 ` [PATCH V2 07/13] powerpc/vas: Take reference to PID and mm for user space windows Haren Myneni
2019-12-12 13:02   ` Christoph Hellwig
2019-12-17  5:35     ` Haren Myneni
2019-12-09  3:33 ` [PATCH V2 08/13] powerpc/vas: Update CSB and notify process for fault CRBs Haren Myneni
2019-12-12 13:07   ` Christoph Hellwig
2019-12-09  3:34 ` [PATCH V2 09/13] powerpc/vas: Print CRB and FIFO values Haren Myneni
2019-12-09  3:34 ` [PATCH V2 10/13] powerpc/vas: Do not use default credits for receive window Haren Myneni
2019-12-09  3:35 ` [PATCH V2 11/13] powerpc/vas: Return credits after handling fault Haren Myneni
2019-12-09  3:36 ` [PATCH V2 12/13] powerpc/vas: Display process stuck message Haren Myneni
2019-12-09  3:37 ` Haren Myneni [this message]
2019-12-09  5:37 ` [PATCH V2 00/13] powerpc/vas: Page fault handling for user space NX requests Christophe Leroy
2019-12-09  8:38   ` Segher Boessenkool
2019-12-12  5:05     ` Haren Myneni
2019-12-12  5:38 ` Haren Myneni

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1575862643.16318.31.camel@hbabu-laptop \
    --to=haren@linux.ibm.com \
    --cc=devicetree@vger.kernel.org \
    --cc=hch@infradead.org \
    --cc=herbert@gondor.apana.org.au \
    --cc=linuxppc-dev@lists.ozlabs.org \
    --cc=mikey@neuling.org \
    --cc=mpe@ellerman.id.au \
    --cc=npiggin@gmail.com \
    --cc=sukadev@linux.vnet.ibm.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).