From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from ozlabs.org (ozlabs.org [IPv6:2401:3900:2:1::2]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 03ED71A09D5 for ; Mon, 8 Dec 2014 19:18:45 +1100 (AEDT) Received: from e23smtp09.au.ibm.com (e23smtp09.au.ibm.com [202.81.31.142]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id A98291400EA for ; Mon, 8 Dec 2014 19:18:44 +1100 (AEDT) Received: from /spool/local by e23smtp09.au.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Mon, 8 Dec 2014 18:18:44 +1000 From: "Ian Munsie" To: mpe Subject: [PATCH 4/7] CXL: Early return from cxl_handle_fault for a shut down context Date: Mon, 8 Dec 2014 19:17:58 +1100 Message-Id: <1418026681-14787-4-git-send-email-imunsie@au.ibm.com> In-Reply-To: <1418026681-14787-1-git-send-email-imunsie@au.ibm.com> References: <1418026681-14787-1-git-send-email-imunsie@au.ibm.com> Cc: cbe-oss-dev , mikey , arnd , "Aneesh Kumar K.V" , greg , linux-kernel , linuxppc-dev , anton , imunsie , jk List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , From: Ian Munsie If a context is being detached and we get a translation fault for it there is little point getting it's mm and handling the fault, so just respond with an address error and return earlier. Signed-off-by: Ian Munsie --- drivers/misc/cxl/fault.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/misc/cxl/fault.c b/drivers/misc/cxl/fault.c index c99e896..3e8c06a 100644 --- a/drivers/misc/cxl/fault.c +++ b/drivers/misc/cxl/fault.c @@ -176,6 +176,12 @@ void cxl_handle_fault(struct work_struct *fault_work) return; } + /* Early return if the context is being / has been detached */ + if (ctx->status == CLOSED) { + cxl_ack_ae(ctx); + return; + } + pr_devel("CXL BOTTOM HALF handling fault for afu pe: %i. " "DSISR: %#llx DAR: %#llx\n", ctx->pe, dsisr, dar); -- 2.1.3