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 B04B4CA5FB3 for ; Thu, 1 Oct 2026 09:34:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-Type:In-Reply-To:From:References:Cc:To:Subject:MIME-Version:Date: Message-ID:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=68HSkxELOQFz+Jf6fK34pTwAZVZfyUhd2rIP6STnHPE=; b=nUYbzxa6RHN5Gr1hWXKxXtQlFb Blbbe7bnAj4wB2Ue0Osvz2CFto1tU5Nrf3O+craxK77LjqdJ5wav+/GVcSonFZu9XBYGdHyoFCgEf O5bhTIHUUd3cIDHqJfO6Hay1A9wbhG2JQurNpCJur683d2xOhbmMZlPyuF6heOm7ymGaBYvrnyYpA m71HfCLZW3xtHp6ZrS+YwVJu9I1rxV4nVg77+mvCtlW39b9kKemwjOIdecvAGyVTI8bjv2ZDA6B+q xzB7LW+JNqh3xOk2c7yrJgNLBvyqPfoUrvznd1BzbpOMpdChJOLdNtOrMdE/uT9aUz6GEwX47YV9r /H33w7Mg==; 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charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20261001_023417_041328_AE638751 X-CRM114-Status: GOOD ( 14.92 ) X-BeenThere: linux-arm-kernel@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-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi, On 9/10/26 10:21, Srirangan Madhavan wrote: > Define SMCCC Arch function IDs for CLEAN_INV_MEMREGION and its ATTRIBUTES > call, and add RATE_LIMITED/BUSY return codes from DEN0028 for callers that > need transient error handling. > > Signed-off-by: Srirangan Madhavan > Reviewed-by: Jonathan Cameron > --- > include/linux/arm-smccc.h | 21 +++++++++++++++++++-- > tools/include/linux/arm-smccc.h | 21 +++++++++++++++++++-- > 2 files changed, 38 insertions(+), 4 deletions(-) > > diff --git a/include/linux/arm-smccc.h b/include/linux/arm-smccc.h > index 4de81848fe2e..2e205320d88a 100644 > --- a/include/linux/arm-smccc.h > +++ b/include/linux/arm-smccc.hARM_SMCCC_FAST_CALL > @@ -116,6 +116,22 @@ > ARM_SMCCC_SMC_32, \ > ARM_SMCCC_OWNER_CPU, 0x10) > > +/* > + * DEN0028 v1.7 defines these cache maintenance functions as SMC64 > + * because they carry 64-bit memory range arguments. > + */ > +#define ARM_SMCCC_ARCH_CLEAN_INV_MEMREGION \ > + ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \ > + ARM_SMCCC_SMC_64, \ > + ARM_SMCCC_OWNER_ARCH, \ > + 0x5) > + > +#define ARM_SMCCC_ARCH_CLEAN_INV_MEMREGION_ATTRIBUTES \ > + ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \ > + ARM_SMCCC_SMC_64, \ > + ARM_SMCCC_OWNER_ARCH, \ > + 0x6) > + > #define ARM_SMCCC_VENDOR_HYP_CALL_UID_FUNC_ID \ > ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \ > ARM_SMCCC_SMC_32, \ > @@ -305,13 +321,14 @@ > 0x53) > > /* > - * Return codes defined in ARM DEN 0070A > - * ARM DEN 0070A is now merged/consolidated into ARM DEN 0028 C > + * Return codes defined by Arm SMCCC (DEN0028 v1.7). > */ > #define SMCCC_RET_SUCCESS 0 > #define SMCCC_RET_NOT_SUPPORTED -1 > #define SMCCC_RET_NOT_REQUIRED -2 > #define SMCCC_RET_INVALID_PARAMETER -3 > +#define SMCCC_RET_RATE_LIMITED -4 > +#define SMCCC_RET_BUSY -5 > > #ifndef __ASSEMBLY__ > > diff --git a/tools/include/linux/arm-smccc.h b/tools/include/linux/arm-smccc.h > index 63ce9bebccd3..ae5637b3240f 100644 > --- a/tools/include/linux/arm-smccc.h > +++ b/tools/include/linux/arm-smccc.h Why is that? Is there any tool using that? I don't think we unconditionally sync the two files? The numbers in the file above match the spec, so for that part: Reviewed-by: Andre Przywara Cheers, Andre > @@ -96,6 +96,22 @@ > ARM_SMCCC_SMC_32, \ > 0, 0x3fff) > > +/* > + * DEN0028 v1.7 defines these cache maintenance functions as SMC64 > + * because they carry 64-bit memory range arguments. > + */ > +#define ARM_SMCCC_ARCH_CLEAN_INV_MEMREGION \ > + ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \ > + ARM_SMCCC_SMC_64, \ > + ARM_SMCCC_OWNER_ARCH, \ > + 0x5) > + > +#define ARM_SMCCC_ARCH_CLEAN_INV_MEMREGION_ATTRIBUTES \ > + ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \ > + ARM_SMCCC_SMC_64, \ > + ARM_SMCCC_OWNER_ARCH, \ > + 0x6) > + > #define ARM_SMCCC_VENDOR_HYP_CALL_UID_FUNC_ID \ > ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \ > ARM_SMCCC_SMC_32, \ > @@ -182,12 +198,13 @@ > 0x53) > > /* > - * Return codes defined in ARM DEN 0070A > - * ARM DEN 0070A is now merged/consolidated into ARM DEN 0028 C > + * Return codes defined by Arm SMCCC (DEN0028 v1.7). > */ > #define SMCCC_RET_SUCCESS 0 > #define SMCCC_RET_NOT_SUPPORTED -1 > #define SMCCC_RET_NOT_REQUIRED -2 > #define SMCCC_RET_INVALID_PARAMETER -3 > +#define SMCCC_RET_RATE_LIMITED -4 > +#define SMCCC_RET_BUSY -5 > > #endif /*__LINUX_ARM_SMCCC_H*/