From patchwork Wed May 18 17:02:51 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?q?Heiko_St=C3=BCbner?= X-Patchwork-Id: 12853894 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 A1A42C433FE for ; Wed, 18 May 2022 17:03:15 +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:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=f/O67/+MtJSU1d9kADNl28Xjg+l6T0z+ysP0oP1PWkI=; b=npXpZUEbaqJAYD mTo4tQCFnXyUei0rp/Gcqx0h8xDpOQnGZrtN+Zqn18jHllgg8yUp8IPHrmJBQLOg/zuAy1Yex/XFd A+CuCu/S/qTUbB2f+HJG1Kc1IcFtH1+/9qdeqwKcs1ptdwLh4T6pbu6iRx+jjLFtGuz9R/YuRoMPW aVIghXbjESaATVvY21wCno6kz5/W1e4FQcATh/iop7HI7uYnYwNeI6iUFbkNd0T3yH9mLkPEfxPIW 23oDkyRe+s2OIjaC5qWenMgyqvGWtPULeXbT0JBi4a65KrimLFnOGdPvrXo23J5hMyrhOTvZBOt/F BuYLNSqKvxNhr2VzBxiQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nrN4m-003AD0-LT; Wed, 18 May 2022 17:03:08 +0000 Received: from gloria.sntech.de ([185.11.138.130]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nrN4i-003AAc-Md for linux-riscv@lists.infradead.org; Wed, 18 May 2022 17:03:06 +0000 Received: from ip5b412258.dynamic.kabel-deutschland.de ([91.65.34.88] helo=phil.lan) by gloria.sntech.de with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1nrN4c-0001Pv-M4; Wed, 18 May 2022 19:02:58 +0200 From: Heiko Stuebner To: palmer@dabbelt.com, paul.walmsley@sifive.com Cc: linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, wefu@redhat.com, guoren@kernel.org, mick@ics.forth.gr, samuel@sholland.org, cmuellner@linux.com, philipp.tomsich@vrull.eu, hch@lst.de, Heiko Stuebner , kernel test robot Subject: [PATCH 1/4] riscv: drop cpufeature_apply_feature tracking variable Date: Wed, 18 May 2022 19:02:51 +0200 Message-Id: <20220518170254.3178923-2-heiko@sntech.de> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220518170254.3178923-1-heiko@sntech.de> References: <20220518170254.3178923-1-heiko@sntech.de> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220518_100304_771588_996BD13B X-CRM114-Status: GOOD ( 10.52 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org The variable was tracking which feature patches got applied but that information was never actually used - and thus resulted in a warning as well. Drop the variable. Reported-by: kernel test robot Signed-off-by: Heiko Stuebner --- arch/riscv/kernel/cpufeature.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/arch/riscv/kernel/cpufeature.c b/arch/riscv/kernel/cpufeature.c index dea3ea19deee..b33564df81e1 100644 --- a/arch/riscv/kernel/cpufeature.c +++ b/arch/riscv/kernel/cpufeature.c @@ -294,7 +294,6 @@ void __init_or_module riscv_cpufeature_patch_func(struct alt_entry *begin, unsigned int stage) { u32 cpu_req_feature = cpufeature_probe(stage); - u32 cpu_apply_feature = 0; struct alt_entry *alt; u32 tmp; @@ -308,10 +307,8 @@ void __init_or_module riscv_cpufeature_patch_func(struct alt_entry *begin, } tmp = (1U << alt->errata_id); - if (cpu_req_feature & tmp) { + if (cpu_req_feature & tmp) patch_text_nosync(alt->old_ptr, alt->alt_ptr, alt->alt_len); - cpu_apply_feature |= tmp; - } } } #endif From patchwork Wed May 18 17:02:52 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?q?Heiko_St=C3=BCbner?= X-Patchwork-Id: 12853892 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 ABBA8C433EF for ; Wed, 18 May 2022 17:03:15 +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:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=j5327kIjQOi3h37AHexLja/55L5gfjZr64V92eDEDLg=; b=rKxc/6JmpEKrQb JOzcrtWKmzfj4MN3q8OKJnu1wCpgyYEp6UfZRPeowUTsFPFfegDWkoQWKGmQOKt6NRwYpSNHFjBMV pa+tP1W10PQDbZHHNQa56IviKKkQSKnm24PIGaeP6tQieEkt1nhKYFMlUSRT/teMIGoYSO2lTjFIj SwE+Qo1NCPMQAYmaYA+Yg3fm5R3qCdIHF8ow92FElZGvZxrReZA98iBFOrf8ofFWDYbGnMj4RRSv2 MUaIDLAUYduOgnY3KC8GoJR8WeepATQVFopKE9RGXNZcR9deRjW53Utp86duMNwgiy0cO4aH9TT13 yRM5RrbJbBK4fywbzh7A==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nrN4j-003ABU-MS; Wed, 18 May 2022 17:03:05 +0000 Received: from gloria.sntech.de ([185.11.138.130]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nrN4h-003A9a-NH for linux-riscv@lists.infradead.org; Wed, 18 May 2022 17:03:04 +0000 Received: from ip5b412258.dynamic.kabel-deutschland.de ([91.65.34.88] helo=phil.lan) by gloria.sntech.de with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1nrN4d-0001Pv-1b; Wed, 18 May 2022 19:02:59 +0200 From: Heiko Stuebner To: palmer@dabbelt.com, paul.walmsley@sifive.com Cc: linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, wefu@redhat.com, guoren@kernel.org, mick@ics.forth.gr, samuel@sholland.org, cmuellner@linux.com, philipp.tomsich@vrull.eu, hch@lst.de, Heiko Stuebner Subject: [PATCH 2/4] riscv: Improve description for RISCV_ISA_SVPBMT Kconfig symbol Date: Wed, 18 May 2022 19:02:52 +0200 Message-Id: <20220518170254.3178923-3-heiko@sntech.de> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220518170254.3178923-1-heiko@sntech.de> References: <20220518170254.3178923-1-heiko@sntech.de> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220518_100303_834934_A01B3302 X-CRM114-Status: GOOD ( 11.30 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org This improves the symbol's description to make it easier for people to understand what it is about. Suggested-by: Christoph Hellwig Suggested-by: Philipp Tomsich Signed-off-by: Heiko Stuebner --- arch/riscv/Kconfig | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index 65285b980134..a4b299ad4473 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -356,8 +356,13 @@ config RISCV_ISA_SVPBMT select RISCV_ALTERNATIVE default y help - Adds support to dynamically detect the presence of the SVPBMT extension - (Supervisor-mode: page-based memory types) and enable its usage. + Adds support to dynamically detect the presence of the SVPBMT + ISA-extension (Supervisor-mode: page-based memory types) and + enable its usage. + + The memory type for a page contains a combination of attributes + that indicate the cacheability, idempotency, and ordering + properties for access to that page. The SVPBMT extension is only available on 64Bit cpus. From patchwork Wed May 18 17:02:53 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?q?Heiko_St=C3=BCbner?= X-Patchwork-Id: 12853895 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 5D6F3C433EF for ; Wed, 18 May 2022 17:03:17 +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:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=fpY5Fe6xshC+rUi+SkWPA429pEMn/+WXQT5DpBakbm0=; b=lpIvNPZfgWKA70 sJSgsMjvk0PRbxS1k3exKrWYiQa9rjgJYFZWdTFZolsk2b4gfLe1rJM5RxjJD1btHTtuCX2CIbYFx k7hpFCzDIMtXb42SIwyLKANsdnURm8Jraanpgh7H/TMFNfdqbobicmscxW8QXOLYXUMgXHEfy3mcg zNsmg8CDAhCd8didslhtv59jFNV32UI4kwalV7GHCj2qf1dFEVejpf9ckjjq0Nhw28kvHJzyTOO5q 5Xi9sziLlC51pGIky1UaPqhApTRauaX7gm1+WC2Rt61MJqnfyXgIIplmwsfiHQRvjZ8Y4t3TYNzQ0 muDmP0ImLWpitM4o572w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nrN4o-003ADU-1a; Wed, 18 May 2022 17:03:10 +0000 Received: from gloria.sntech.de ([185.11.138.130]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nrN4h-003A9Z-NJ for linux-riscv@lists.infradead.org; Wed, 18 May 2022 17:03:06 +0000 Received: from ip5b412258.dynamic.kabel-deutschland.de ([91.65.34.88] helo=phil.lan) by gloria.sntech.de with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1nrN4d-0001Pv-Dd; Wed, 18 May 2022 19:02:59 +0200 From: Heiko Stuebner To: palmer@dabbelt.com, paul.walmsley@sifive.com Cc: linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, wefu@redhat.com, guoren@kernel.org, mick@ics.forth.gr, samuel@sholland.org, cmuellner@linux.com, philipp.tomsich@vrull.eu, hch@lst.de, Heiko Stuebner Subject: [PATCH 3/4] riscv: make patch-function pointer more generic in cpu_manufacturer_info struct Date: Wed, 18 May 2022 19:02:53 +0200 Message-Id: <20220518170254.3178923-4-heiko@sntech.de> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220518170254.3178923-1-heiko@sntech.de> References: <20220518170254.3178923-1-heiko@sntech.de> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220518_100303_834664_5B77193B X-CRM114-Status: GOOD ( 12.32 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org During review the naming of the function-pointer was called confusing as the vendor id is just one of three inputs for the patching and indeed it serves no real purpose, as with recent changes the function pointer is not a static global element anymore, so drop the "vendor_" prefix. Suggested-by: Christoph Hellwig Signed-off-by: Heiko Stuebner --- arch/riscv/kernel/alternative.c | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) diff --git a/arch/riscv/kernel/alternative.c b/arch/riscv/kernel/alternative.c index c9d0d3c53223..a7d26a00beea 100644 --- a/arch/riscv/kernel/alternative.c +++ b/arch/riscv/kernel/alternative.c @@ -20,7 +20,7 @@ struct cpu_manufacturer_info_t { unsigned long vendor_id; unsigned long arch_id; unsigned long imp_id; - void (*vendor_patch_func)(struct alt_entry *begin, struct alt_entry *end, + void (*patch_func)(struct alt_entry *begin, struct alt_entry *end, unsigned long archid, unsigned long impid, unsigned int stage); }; @@ -40,16 +40,16 @@ static void __init_or_module riscv_fill_cpu_mfr_info(struct cpu_manufacturer_inf switch (cpu_mfr_info->vendor_id) { #ifdef CONFIG_ERRATA_SIFIVE case SIFIVE_VENDOR_ID: - cpu_mfr_info->vendor_patch_func = sifive_errata_patch_func; + cpu_mfr_info->patch_func = sifive_errata_patch_func; break; #endif #ifdef CONFIG_ERRATA_THEAD case THEAD_VENDOR_ID: - cpu_mfr_info->vendor_patch_func = thead_errata_patch_func; + cpu_mfr_info->patch_func = thead_errata_patch_func; break; #endif default: - cpu_mfr_info->vendor_patch_func = NULL; + cpu_mfr_info->patch_func = NULL; } } @@ -68,13 +68,13 @@ static void __init_or_module _apply_alternatives(struct alt_entry *begin, riscv_cpufeature_patch_func(begin, end, stage); - if (!cpu_mfr_info.vendor_patch_func) + if (!cpu_mfr_info.patch_func) return; - cpu_mfr_info.vendor_patch_func(begin, end, - cpu_mfr_info.arch_id, - cpu_mfr_info.imp_id, - stage); + cpu_mfr_info.patch_func(begin, end, + cpu_mfr_info.arch_id, + cpu_mfr_info.imp_id, + stage); } void __init apply_boot_alternatives(void) From patchwork Wed May 18 17:02:54 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?q?Heiko_St=C3=BCbner?= X-Patchwork-Id: 12853896 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 68153C433F5 for ; Wed, 18 May 2022 17:03:19 +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:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=nsNtD7KtABita88qeFJ0idZU/yccszZCbJhxHHjiBuk=; b=GUqtW7HS+1YoI2 +iNLs53yISRCjtpI59epM3422wnmV2fYJOoSjK0PYGhN0BqNw2FtFYeyRLcZPJgDNC4zF2mYtv0ax o4dImNT1ALLxzEW7lXT3G5Xe+dHLLoKy4fMhHDJRalJPkkK1CX1vizRcq/dmGjBIaYUjsi+qyczKQ J4H540Q+CscvaBoJLfSLpZHgOllzEIy2rx6yTKLccXs/wvPGMFczIsroArpdG2uDhQytXxRAPLzhz I5Q3+en1rrKQWhSzI4SQSd4b6jOYg1Y5JkgEgLtflKAvIoF3g0Ft65kChq32Ed/BBoQ+/mRD4DX7f ONQxCv7riD1HIY6rGMgA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nrN4p-003AEI-EB; Wed, 18 May 2022 17:03:11 +0000 Received: from gloria.sntech.de ([185.11.138.130]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nrN4i-003AAd-RY for linux-riscv@lists.infradead.org; Wed, 18 May 2022 17:03:06 +0000 Received: from ip5b412258.dynamic.kabel-deutschland.de ([91.65.34.88] helo=phil.lan) by gloria.sntech.de with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1nrN4d-0001Pv-Q5; Wed, 18 May 2022 19:02:59 +0200 From: Heiko Stuebner To: palmer@dabbelt.com, paul.walmsley@sifive.com Cc: linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, wefu@redhat.com, guoren@kernel.org, mick@ics.forth.gr, samuel@sholland.org, cmuellner@linux.com, philipp.tomsich@vrull.eu, hch@lst.de, Heiko Stuebner , kernel test robot Subject: [PATCH 4/4] riscv: fix dependency for t-head errata Date: Wed, 18 May 2022 19:02:54 +0200 Message-Id: <20220518170254.3178923-5-heiko@sntech.de> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220518170254.3178923-1-heiko@sntech.de> References: <20220518170254.3178923-1-heiko@sntech.de> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220518_100304_921574_253EE4C8 X-CRM114-Status: UNSURE ( 9.83 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org alternatives only work correctly on non-xip-kernels and while the selected alternative-symbol has the correct dependency the symbol selecting it also needs that dependency. So add the missing dependency to the T-Head errata Kconfig symbol. Reported-by: kernel test robot Signed-off-by: Heiko Stuebner Reviewed-by: Guo Ren --- arch/riscv/Kconfig.erratas | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/riscv/Kconfig.erratas b/arch/riscv/Kconfig.erratas index ebfcd5cc6eaf..457ac72c9b36 100644 --- a/arch/riscv/Kconfig.erratas +++ b/arch/riscv/Kconfig.erratas @@ -35,6 +35,7 @@ config ERRATA_SIFIVE_CIP_1200 config ERRATA_THEAD bool "T-HEAD errata" + depends on !XIP_KERNEL select RISCV_ALTERNATIVE help All T-HEAD errata Kconfig depend on this Kconfig. Disabling