From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 4455EE9A047 for ; Wed, 18 Feb 2026 02:27:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:Reply-To:List-Subscribe:List-Help: List-Post:List-Archive:List-Unsubscribe:List-Id:Cc:To:Message-Id:MIME-Version :Subject:Date:From:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=jilocwo2J8m8LHrjvjCC9Mz3q+HqY0kP8hlR6wZUV6I=; b=tjFH6VYrJIrXg8 cEzx9Ght3RVxa/fyk+ECyAAZutiZoQHzaUNfE7CCU77HCfg4rWjENlefGpy9JLaE+GzIEEhbgCnDE GI3NSqAEzr1oCeYSXcSVPIn1ss0a5KxmqgeyAMp1dxYHXqPxeHXnRaD0HXIG5IXCm4W/SEweFkKLD 6Rzm98Eq3k2t3H2rkLoAsUYN/pAPT3Y4oaPFHU1DzRV1J3uzEwigh5bVSCPRr0KSBBrHKkyEnpUk5 0owWKspBc7ayeq2DEFDbuD2WlqqJ22ikB5kOD58KDlPd1jy3GBA9wLlJtC4c8jdy2NSIT3bPduzQs 5ig2hmtfYQjgpDz9/wOw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vsXHi-00000009BeJ-1bTA; Wed, 18 Feb 2026 02:27:26 +0000 Received: from sea.source.kernel.org ([172.234.252.31]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1vsXHf-00000009Bdr-3sb1 for opensbi@lists.infradead.org; Wed, 18 Feb 2026 02:27:25 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id DD2F343811; Wed, 18 Feb 2026 02:27:22 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPS id BA15EC4CEF7; Wed, 18 Feb 2026 02:27:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1771381642; bh=k9cdXTZ89ey653Pi1P8Yh2S9kgTCRzY5PrY3zKs3fxU=; h=From:Date:Subject:To:Cc:Reply-To:From; b=tmLm4Iy/Dr5aNa++JSlrf0h2DYfG6IujFytbLFBuGLwFceE02j8pd0jMMgFyC5mIj v/DSmE0ec2MMh6Q4ocjqO85Ziom97MHiFH1QE42OmmIj9n6hwEiViUYIr329QZwlsb iUkwyrxza6trz83FhjI4Et2h1xNd+UqxErqRo/Qc657I8TGx8uNGIROA25zKotRxpo 9hV9Wwslfc3xdTMq7qw3LAFnaK/UBsJ5TgQvQa701y/Q3V5ZoQmXP3o5IGrOlWqoTy phAEnFa+8rj2y5MIgpyPiFyKnIsnMzTN3pWTyNflhk6zDa/s0fz2ssOSVMImqVt+0I w69+zuqoGa/HQ== Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id A4DD3E9A041; Wed, 18 Feb 2026 02:27:22 +0000 (UTC) From: Charlie Jenkins via B4 Relay Date: Tue, 17 Feb 2026 18:26:52 -0800 Subject: [PATCH] lib: sbi: Use SBI_SSE_EVENT_LOCAL_UNKNOWN_NMI with unknown interrupts MIME-Version: 1.0 Message-Id: <20260217-nmi-v1-1-eb4b4b3ad70e@gmail.com> X-B4-Tracking: v=1; b=H4sIAAAAAAAC/6tWKk4tykwtVrJSqFYqSi3LLM7MzwNyDHUUlJIzE vPSU3UzU4B8JSMDIzMDI0Nz3bzcTF1DQwMzk8Q0i1QLS3MloMqCotS0zAqwKdGxtbUAeaIgOVU AAAA= X-Change-ID: 20260217-nmi-11064af8e897 To: opensbi@lists.infradead.org Cc: weidongwd , Charlie Jenkins X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=ed25519-sha256; t=1771381642; l=1611; i=thecharlesjenkins@gmail.com; s=20260127; h=from:subject:message-id; bh=wBmA1uCady5afkTbF2Zn1Dnq+RrIayl1Lm/3nWl038Q=; b=9oWZXe+Yfn/amm2DXhp3kF3HOgZBAe8Hwc9oMLqyD5njXM9Eq5ov4+IN+1Scx1frH10YGo2BZ e7criYzhQCFBtItTpuvSUNzrGqTGfjGKVnA3gZ9huYGl43z/foJ7bwr X-Developer-Key: i=thecharlesjenkins@gmail.com; a=ed25519; pk=4AzEw2rmBYSzmHkYTjITwPc2sWIvqjw/Fu3GnQmSMTI= X-Endpoint-Received: by B4 Relay for thecharlesjenkins@gmail.com/20260127 with auth_id=619 X-Original-From: Charlie Jenkins X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260217_182723_993397_21CEF569 X-CRM114-Status: UNSURE ( 8.06 ) X-CRM114-Notice: Please train this message. X-BeenThere: opensbi@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: thecharlesjenkins@gmail.com Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "opensbi" Errors-To: opensbi-bounces+opensbi=archiver.kernel.org@lists.infradead.org From: Charlie Jenkins An mcause of 0 means "unknown cause" according to the riscv priviledged spec. When this occurs, the interrupt should be forwarded to S-mode software via SBI_SSE_EVENT_GLOBAL_UNKNOWN_NMI if SSE is enabled. Signed-off-by: Charlie Jenkins --- This patch builds off of [1] to trigger the UNKNOWN_NMI SSE call. That patch depends on the SBI spec patch [2]. [1] https://lore.kernel.org/opensbi/20251014055330.59506-1-weidong.wd@bytedance.com/ [2] https://github.com/riscv-non-isa/riscv-sbi-doc/pull/223 --- include/sbi/riscv_encoding.h | 1 + lib/sbi/sbi_trap.c | 4 ++++ 2 files changed, 5 insertions(+) diff --git a/include/sbi/riscv_encoding.h b/include/sbi/riscv_encoding.h index b5a4ce81..1c634a45 100644 --- a/include/sbi/riscv_encoding.h +++ b/include/sbi/riscv_encoding.h @@ -90,6 +90,7 @@ #define MCAUSE_IRQ_MASK (_UL(1) << (__riscv_xlen - 1)) +#define IRQ_UNKNOWN 0 #define IRQ_S_SOFT 1 #define IRQ_VS_SOFT 2 #define IRQ_M_SOFT 3 diff --git a/lib/sbi/sbi_trap.c b/lib/sbi/sbi_trap.c index f41db4d1..f6576bd9 100644 --- a/lib/sbi/sbi_trap.c +++ b/lib/sbi/sbi_trap.c @@ -234,6 +234,10 @@ int sbi_trap_redirect(struct sbi_trap_regs *regs, static int sbi_trap_nonaia_irq(unsigned long irq) { switch (irq) { +#if defined(CONFIG_SBI_ECALL_SSE) + case IRQ_UNKNOWN: + return sbi_sse_inject_event(SBI_SSE_EVENT_LOCAL_UNKNOWN_NMI); +#endif case IRQ_M_TIMER: sbi_timer_process(); break; --- base-commit: b27ecec76b8acfece9c28078d02cbc6bc762135c change-id: 20260217-nmi-11064af8e897 - Charlie -- opensbi mailing list opensbi@lists.infradead.org http://lists.infradead.org/mailman/listinfo/opensbi