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 AA442C3ABD8 for ; Fri, 16 May 2025 23:58:28 +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-Type: Content-Transfer-Encoding:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id: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=190+YvzpKBaWgW7Tt2541btxHiIRnDQ9bnsyzzE8KuI=; b=YWXd5ZVDFEOQu/ 5jFLgtTxp+0Vl50F7ruvbO+iEeL4be+L/cg+wE9eUvkQQGE+rrkcdirrLDYdhe1qRJ/NvcYC+Qliv 4FN3c2uOH4jjoG1pFkjiixdBKDtvTYa2BUwBlDaOQIQ81w4vM+V2oljzyELE/gSmGGcdAVAsOLw9T BdureDxxyDE3xWt4k1JLFqx8eAqWfUBAtzhHjumyOxg6leUmtrDV0c5pNvXge9LWomlOjQKSH53JP qfBIkWrbpqA8ai5Gb4k1cRuJndWJ6KgPaCFgwTTBtWbYigm9mYaLsA6t1gBZKLwMLP4pp2nxHT1bG 7buRoT478am+sXZP00Ug==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1uG4we-00000004tQJ-1sTn; Fri, 16 May 2025 23:58:28 +0000 Received: from out-180.mta1.migadu.com ([2001:41d0:203:375::b4]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1uG4wb-00000004tOW-2J0C for kvm-riscv@lists.infradead.org; Fri, 16 May 2025 23:58:26 +0000 Message-ID: <8b11ba85-0c95-4b7a-9206-ead8099bc013@linux.dev> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1747439893; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=EPRT6tmwQEpVbRbwRNdU0oFUqb9qQTxFeTyAspVLMs8=; b=pX95yTsDC3Ric+OnlCcVjjaBGP/p5qYQc46Vf3I4fAWFDb9NCt2l1vd9/H9mIMO1VrYswD 6r3aU+1unjr5BQbqbkiPagtLp0NahXy+wMkgs4QbcfWls7AGoRy3phBMvUGtzMllVJvgx/ /jv5Z0DY7BE2UvE65VhP7vtvmFGu6b4= Date: Fri, 16 May 2025 16:57:47 -0700 MIME-Version: 1.0 Subject: Re: [PATCH v7 14/14] RISC-V: KVM: add support for SBI_FWFT_MISALIGNED_DELEG To: =?UTF-8?B?Q2zDqW1lbnQgTMOpZ2Vy?= , Paul Walmsley , Palmer Dabbelt , Anup Patel , Atish Patra , Shuah Khan , Jonathan Corbet , linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, kvm@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-kselftest@vger.kernel.org Cc: Samuel Holland , Andrew Jones , Deepak Gupta References: <20250515082217.433227-1-cleger@rivosinc.com> <20250515082217.433227-15-cleger@rivosinc.com> Content-Language: en-US X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. From: Atish Patra In-Reply-To: <20250515082217.433227-15-cleger@rivosinc.com> X-Migadu-Flow: FLOW_OUT X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250516_165825_724995_993F0F76 X-CRM114-Status: GOOD ( 16.02 ) X-BeenThere: kvm-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" Sender: "kvm-riscv" Errors-To: kvm-riscv-bounces+kvm-riscv=archiver.kernel.org@lists.infradead.org T24gNS8xNS8yNSAxOjIyIEFNLCBDbMODwqltZW50IEzDg8KpZ2VyIHdyb3RlOgo+IFNCSV9GV0ZU X01JU0FMSUdORURfREVMRUcgbmVlZHMgaGVkZWxlZyB0byBiZSBtb2RpZmllZCB0byBkZWxlZ2F0 ZQo+IG1pc2FsaWduZWQgbG9hZC9zdG9yZSBleGNlcHRpb25zLiBTYXZlIGFuZCByZXN0b3JlIGl0 IGR1cmluZyBDUFUKPiBsb2FkL3B1dC4KPiAKPiBTaWduZWQtb2ZmLWJ5OiBDbMOpbWVudCBMw6ln ZXIgPGNsZWdlckByaXZvc2luYy5jb20+Cj4gUmV2aWV3ZWQtYnk6IERlZXBhayBHdXB0YSA8ZGVi dWdAcml2b3NpbmMuY29tPgo+IFJldmlld2VkLWJ5OiBBbmRyZXcgSm9uZXMgPGFqb25lc0B2ZW50 YW5hbWljcm8uY29tPgo+IC0tLQo+ICAgYXJjaC9yaXNjdi9rdm0vdmNwdV9zYmlfZndmdC5jIHwg NDEgKysrKysrKysrKysrKysrKysrKysrKysrKysrKysrKysrKwo+ICAgMSBmaWxlIGNoYW5nZWQs IDQxIGluc2VydGlvbnMoKykKPiAKPiBkaWZmIC0tZ2l0IGEvYXJjaC9yaXNjdi9rdm0vdmNwdV9z YmlfZndmdC5jIGIvYXJjaC9yaXNjdi9rdm0vdmNwdV9zYmlfZndmdC5jCj4gaW5kZXggYjBmNjZj N2JmMDEwLi42NzcwYzA0M2JiY2IgMTAwNjQ0Cj4gLS0tIGEvYXJjaC9yaXNjdi9rdm0vdmNwdV9z YmlfZndmdC5jCj4gKysrIGIvYXJjaC9yaXNjdi9rdm0vdmNwdV9zYmlfZndmdC5jCj4gQEAgLTE0 LDYgKzE0LDggQEAKPiAgICNpbmNsdWRlIDxhc20va3ZtX3ZjcHVfc2JpLmg+Cj4gICAjaW5jbHVk ZSA8YXNtL2t2bV92Y3B1X3NiaV9md2Z0Lmg+Cj4gICAKPiArI2RlZmluZSBNSVNfREVMRUcgKEJJ VF9VTEwoRVhDX0xPQURfTUlTQUxJR05FRCkgfCBCSVRfVUxMKEVYQ19TVE9SRV9NSVNBTElHTkVE KSkKPiArCj4gICBzdHJ1Y3Qga3ZtX3NiaV9md2Z0X2ZlYXR1cmUgewo+ICAgCS8qKgo+ICAgCSAq IEBpZDogRmVhdHVyZSBJRAo+IEBAIC02OCw3ICs3MCw0NiBAQCBzdGF0aWMgYm9vbCBrdm1fZndm dF9pc19kZWZpbmVkX2ZlYXR1cmUoZW51bSBzYmlfZndmdF9mZWF0dXJlX3QgZmVhdHVyZSkKPiAg IAlyZXR1cm4gZmFsc2U7Cj4gICB9Cj4gICAKPiArc3RhdGljIGJvb2wga3ZtX3NiaV9md2Z0X21p c2FsaWduZWRfZGVsZWdhdGlvbl9zdXBwb3J0ZWQoc3RydWN0IGt2bV92Y3B1ICp2Y3B1KQo+ICt7 Cj4gKwlyZXR1cm4gbWlzYWxpZ25lZF90cmFwc19jYW5fZGVsZWdhdGUoKTsKPiArfQo+ICsKPiAr c3RhdGljIGxvbmcga3ZtX3NiaV9md2Z0X3NldF9taXNhbGlnbmVkX2RlbGVnYXRpb24oc3RydWN0 IGt2bV92Y3B1ICp2Y3B1LAo+ICsJCQkJCXN0cnVjdCBrdm1fc2JpX2Z3ZnRfY29uZmlnICpjb25m LAo+ICsJCQkJCXVuc2lnbmVkIGxvbmcgdmFsdWUpCj4gK3sKPiArCXN0cnVjdCBrdm1fdmNwdV9j b25maWcgKmNmZyA9ICZ2Y3B1LT5hcmNoLmNmZzsKPiArCj4gKwlpZiAodmFsdWUgPT0gMSkgewo+ ICsJCWNmZy0+aGVkZWxlZyB8PSBNSVNfREVMRUc7Cj4gKwkJY3NyX3NldChDU1JfSEVERUxFRywg TUlTX0RFTEVHKTsKPiArCX0gZWxzZSBpZiAodmFsdWUgPT0gMCkgewo+ICsJCWNmZy0+aGVkZWxl ZyAmPSB+TUlTX0RFTEVHOwo+ICsJCWNzcl9jbGVhcihDU1JfSEVERUxFRywgTUlTX0RFTEVHKTsK PiArCX0gZWxzZSB7Cj4gKwkJcmV0dXJuIFNCSV9FUlJfSU5WQUxJRF9QQVJBTTsKPiArCX0KPiAr Cj4gKwlyZXR1cm4gU0JJX1NVQ0NFU1M7Cj4gK30KPiArCj4gK3N0YXRpYyBsb25nIGt2bV9zYmlf ZndmdF9nZXRfbWlzYWxpZ25lZF9kZWxlZ2F0aW9uKHN0cnVjdCBrdm1fdmNwdSAqdmNwdSwKPiAr CQkJCQlzdHJ1Y3Qga3ZtX3NiaV9md2Z0X2NvbmZpZyAqY29uZiwKPiArCQkJCQl1bnNpZ25lZCBs b25nICp2YWx1ZSkKPiArewo+ICsJKnZhbHVlID0gKGNzcl9yZWFkKENTUl9IRURFTEVHKSAmIE1J U19ERUxFRykgPT0gTUlTX0RFTEVHOwo+ICsKPiArCXJldHVybiBTQklfU1VDQ0VTUzsKPiArfQo+ ICsKPiAgIHN0YXRpYyBjb25zdCBzdHJ1Y3Qga3ZtX3NiaV9md2Z0X2ZlYXR1cmUgZmVhdHVyZXNb XSA9IHsKPiArCXsKPiArCQkuaWQgPSBTQklfRldGVF9NSVNBTElHTkVEX0VYQ19ERUxFRywKPiAr CQkuc3VwcG9ydGVkID0ga3ZtX3NiaV9md2Z0X21pc2FsaWduZWRfZGVsZWdhdGlvbl9zdXBwb3J0 ZWQsCj4gKwkJLnNldCA9IGt2bV9zYmlfZndmdF9zZXRfbWlzYWxpZ25lZF9kZWxlZ2F0aW9uLAo+ ICsJCS5nZXQgPSBrdm1fc2JpX2Z3ZnRfZ2V0X21pc2FsaWduZWRfZGVsZWdhdGlvbiwKPiArCX0s Cj4gICB9Owo+ICAgCj4gICBzdGF0aWMgc3RydWN0IGt2bV9zYmlfZndmdF9jb25maWcgKgoKTEdU TS4KUmV2aWV3ZWQtYnk6IEF0aXNoIFBhdHJhIDxhdGlzaHBAcml2b3NpbmMuY29tPgoKLS0gCmt2 bS1yaXNjdiBtYWlsaW5nIGxpc3QKa3ZtLXJpc2N2QGxpc3RzLmluZnJhZGVhZC5vcmcKaHR0cDov L2xpc3RzLmluZnJhZGVhZC5vcmcvbWFpbG1hbi9saXN0aW5mby9rdm0tcmlzY3YK From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out-178.mta1.migadu.com (out-178.mta1.migadu.com [95.215.58.178]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9C978280A3B for ; Fri, 16 May 2025 23:58:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=95.215.58.178 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747439899; cv=none; b=fdvlmkJCrPBt5E6lqj8cqlG/D6xxc7sIaeJx3jmFkoQsBioVKoOs2De3SOghONi+rGVn5n4/iP/z4zco9xk6/KmZt20oTKO8dKmXiax4rW4zcukgkSyE3Tx7S4Stk6KH8t2BhMJHl/8rYjAjqeBGLcu1LTolC2dpVnDrlwNaZIo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747439899; c=relaxed/simple; bh=pwVKSSy58H8/xVINe4a7dwbXnm8QeMVTsphrYZUu1Zo=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=tE0nRiBhxsnKMQObjKUVwXCqMnrWRP6dN0a6FBuooBJtO7p8xknG+Z0XakTH2e8vwIdVhyLPBK5cUmDDXSuYCi0X/MbFbwlCqswVj9ipfP6+soIZ7P9PsEydyrpaDblB6QlyPEhBN8GY8t1FjT88r6sF1JHSj5YFplDhhyKQe78= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=pX95yTsD; arc=none smtp.client-ip=95.215.58.178 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="pX95yTsD" Message-ID: <8b11ba85-0c95-4b7a-9206-ead8099bc013@linux.dev> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1747439893; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=EPRT6tmwQEpVbRbwRNdU0oFUqb9qQTxFeTyAspVLMs8=; b=pX95yTsDC3Ric+OnlCcVjjaBGP/p5qYQc46Vf3I4fAWFDb9NCt2l1vd9/H9mIMO1VrYswD 6r3aU+1unjr5BQbqbkiPagtLp0NahXy+wMkgs4QbcfWls7AGoRy3phBMvUGtzMllVJvgx/ /jv5Z0DY7BE2UvE65VhP7vtvmFGu6b4= Date: Fri, 16 May 2025 16:57:47 -0700 Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Subject: Re: [PATCH v7 14/14] RISC-V: KVM: add support for SBI_FWFT_MISALIGNED_DELEG To: =?UTF-8?B?Q2zDqW1lbnQgTMOpZ2Vy?= , Paul Walmsley , Palmer Dabbelt , Anup Patel , Atish Patra , Shuah Khan , Jonathan Corbet , linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, kvm@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-kselftest@vger.kernel.org Cc: Samuel Holland , Andrew Jones , Deepak Gupta References: <20250515082217.433227-1-cleger@rivosinc.com> <20250515082217.433227-15-cleger@rivosinc.com> Content-Language: en-US X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. From: Atish Patra In-Reply-To: <20250515082217.433227-15-cleger@rivosinc.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Migadu-Flow: FLOW_OUT On 5/15/25 1:22 AM, Clément Léger wrote: > SBI_FWFT_MISALIGNED_DELEG needs hedeleg to be modified to delegate > misaligned load/store exceptions. Save and restore it during CPU > load/put. > > Signed-off-by: Clément Léger > Reviewed-by: Deepak Gupta > Reviewed-by: Andrew Jones > --- > arch/riscv/kvm/vcpu_sbi_fwft.c | 41 ++++++++++++++++++++++++++++++++++ > 1 file changed, 41 insertions(+) > > diff --git a/arch/riscv/kvm/vcpu_sbi_fwft.c b/arch/riscv/kvm/vcpu_sbi_fwft.c > index b0f66c7bf010..6770c043bbcb 100644 > --- a/arch/riscv/kvm/vcpu_sbi_fwft.c > +++ b/arch/riscv/kvm/vcpu_sbi_fwft.c > @@ -14,6 +14,8 @@ > #include > #include > > +#define MIS_DELEG (BIT_ULL(EXC_LOAD_MISALIGNED) | BIT_ULL(EXC_STORE_MISALIGNED)) > + > struct kvm_sbi_fwft_feature { > /** > * @id: Feature ID > @@ -68,7 +70,46 @@ static bool kvm_fwft_is_defined_feature(enum sbi_fwft_feature_t feature) > return false; > } > > +static bool kvm_sbi_fwft_misaligned_delegation_supported(struct kvm_vcpu *vcpu) > +{ > + return misaligned_traps_can_delegate(); > +} > + > +static long kvm_sbi_fwft_set_misaligned_delegation(struct kvm_vcpu *vcpu, > + struct kvm_sbi_fwft_config *conf, > + unsigned long value) > +{ > + struct kvm_vcpu_config *cfg = &vcpu->arch.cfg; > + > + if (value == 1) { > + cfg->hedeleg |= MIS_DELEG; > + csr_set(CSR_HEDELEG, MIS_DELEG); > + } else if (value == 0) { > + cfg->hedeleg &= ~MIS_DELEG; > + csr_clear(CSR_HEDELEG, MIS_DELEG); > + } else { > + return SBI_ERR_INVALID_PARAM; > + } > + > + return SBI_SUCCESS; > +} > + > +static long kvm_sbi_fwft_get_misaligned_delegation(struct kvm_vcpu *vcpu, > + struct kvm_sbi_fwft_config *conf, > + unsigned long *value) > +{ > + *value = (csr_read(CSR_HEDELEG) & MIS_DELEG) == MIS_DELEG; > + > + return SBI_SUCCESS; > +} > + > static const struct kvm_sbi_fwft_feature features[] = { > + { > + .id = SBI_FWFT_MISALIGNED_EXC_DELEG, > + .supported = kvm_sbi_fwft_misaligned_delegation_supported, > + .set = kvm_sbi_fwft_set_misaligned_delegation, > + .get = kvm_sbi_fwft_get_misaligned_delegation, > + }, > }; > > static struct kvm_sbi_fwft_config * LGTM. Reviewed-by: Atish Patra 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 08A47C3ABD8 for ; Fri, 16 May 2025 23:58:24 +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-Type: Content-Transfer-Encoding:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id: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=kgNtpGEKT5XdDmo+w2UYHxs5RG/9L1W4Wx4H5UhjymU=; b=QxDbV2bMg/1Z7u i6odVuWodsQb49fdZ0PEmDYfPLsMVTlnuLnogF+aniMvxkIjSGf/g7//1AGkLX6PZN4190cJruS77 9v30uDO0KFY7/BSILbo+h7M/Z0lQw9PVuW0Pf50V5x1evQ1Lrh/55HnsRko3y52GllwZJvVOL3itP guoS4s+Ju+w/F3K974iNQBugic7fIePg/TawBJfo19K21Q4Jb89JUqBCQSt6vLKr+DqS7HM0+DgUt M9TaChvisftW4mfu7x4AcztXMqFmQmyAcy12MN+Gc4ddpu0VKhXfVxlXohnWSG/u58GqlXPw+sbFA NLknnpdybWFFHRXU74IQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1uG4wV-00000004tNS-3qZk; Fri, 16 May 2025 23:58:19 +0000 Received: from out-186.mta1.migadu.com ([2001:41d0:203:375::ba]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1uG4wS-00000004tN4-2f6c for linux-riscv@lists.infradead.org; Fri, 16 May 2025 23:58:18 +0000 Message-ID: <8b11ba85-0c95-4b7a-9206-ead8099bc013@linux.dev> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1747439893; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=EPRT6tmwQEpVbRbwRNdU0oFUqb9qQTxFeTyAspVLMs8=; b=pX95yTsDC3Ric+OnlCcVjjaBGP/p5qYQc46Vf3I4fAWFDb9NCt2l1vd9/H9mIMO1VrYswD 6r3aU+1unjr5BQbqbkiPagtLp0NahXy+wMkgs4QbcfWls7AGoRy3phBMvUGtzMllVJvgx/ /jv5Z0DY7BE2UvE65VhP7vtvmFGu6b4= Date: Fri, 16 May 2025 16:57:47 -0700 MIME-Version: 1.0 Subject: Re: [PATCH v7 14/14] RISC-V: KVM: add support for SBI_FWFT_MISALIGNED_DELEG To: =?UTF-8?B?Q2zDqW1lbnQgTMOpZ2Vy?= , Paul Walmsley , Palmer Dabbelt , Anup Patel , Atish Patra , Shuah Khan , Jonathan Corbet , linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, kvm@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-kselftest@vger.kernel.org Cc: Samuel Holland , Andrew Jones , Deepak Gupta References: <20250515082217.433227-1-cleger@rivosinc.com> <20250515082217.433227-15-cleger@rivosinc.com> Content-Language: en-US X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. From: Atish Patra In-Reply-To: <20250515082217.433227-15-cleger@rivosinc.com> X-Migadu-Flow: FLOW_OUT X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250516_165817_460344_9346CDE4 X-CRM114-Status: GOOD ( 16.02 ) 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: , Content-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org T24gNS8xNS8yNSAxOjIyIEFNLCBDbMODwqltZW50IEzDg8KpZ2VyIHdyb3RlOgo+IFNCSV9GV0ZU X01JU0FMSUdORURfREVMRUcgbmVlZHMgaGVkZWxlZyB0byBiZSBtb2RpZmllZCB0byBkZWxlZ2F0 ZQo+IG1pc2FsaWduZWQgbG9hZC9zdG9yZSBleGNlcHRpb25zLiBTYXZlIGFuZCByZXN0b3JlIGl0 IGR1cmluZyBDUFUKPiBsb2FkL3B1dC4KPiAKPiBTaWduZWQtb2ZmLWJ5OiBDbMOpbWVudCBMw6ln ZXIgPGNsZWdlckByaXZvc2luYy5jb20+Cj4gUmV2aWV3ZWQtYnk6IERlZXBhayBHdXB0YSA8ZGVi dWdAcml2b3NpbmMuY29tPgo+IFJldmlld2VkLWJ5OiBBbmRyZXcgSm9uZXMgPGFqb25lc0B2ZW50 YW5hbWljcm8uY29tPgo+IC0tLQo+ICAgYXJjaC9yaXNjdi9rdm0vdmNwdV9zYmlfZndmdC5jIHwg NDEgKysrKysrKysrKysrKysrKysrKysrKysrKysrKysrKysrKwo+ICAgMSBmaWxlIGNoYW5nZWQs IDQxIGluc2VydGlvbnMoKykKPiAKPiBkaWZmIC0tZ2l0IGEvYXJjaC9yaXNjdi9rdm0vdmNwdV9z YmlfZndmdC5jIGIvYXJjaC9yaXNjdi9rdm0vdmNwdV9zYmlfZndmdC5jCj4gaW5kZXggYjBmNjZj N2JmMDEwLi42NzcwYzA0M2JiY2IgMTAwNjQ0Cj4gLS0tIGEvYXJjaC9yaXNjdi9rdm0vdmNwdV9z YmlfZndmdC5jCj4gKysrIGIvYXJjaC9yaXNjdi9rdm0vdmNwdV9zYmlfZndmdC5jCj4gQEAgLTE0 LDYgKzE0LDggQEAKPiAgICNpbmNsdWRlIDxhc20va3ZtX3ZjcHVfc2JpLmg+Cj4gICAjaW5jbHVk ZSA8YXNtL2t2bV92Y3B1X3NiaV9md2Z0Lmg+Cj4gICAKPiArI2RlZmluZSBNSVNfREVMRUcgKEJJ VF9VTEwoRVhDX0xPQURfTUlTQUxJR05FRCkgfCBCSVRfVUxMKEVYQ19TVE9SRV9NSVNBTElHTkVE KSkKPiArCj4gICBzdHJ1Y3Qga3ZtX3NiaV9md2Z0X2ZlYXR1cmUgewo+ICAgCS8qKgo+ICAgCSAq IEBpZDogRmVhdHVyZSBJRAo+IEBAIC02OCw3ICs3MCw0NiBAQCBzdGF0aWMgYm9vbCBrdm1fZndm dF9pc19kZWZpbmVkX2ZlYXR1cmUoZW51bSBzYmlfZndmdF9mZWF0dXJlX3QgZmVhdHVyZSkKPiAg IAlyZXR1cm4gZmFsc2U7Cj4gICB9Cj4gICAKPiArc3RhdGljIGJvb2wga3ZtX3NiaV9md2Z0X21p c2FsaWduZWRfZGVsZWdhdGlvbl9zdXBwb3J0ZWQoc3RydWN0IGt2bV92Y3B1ICp2Y3B1KQo+ICt7 Cj4gKwlyZXR1cm4gbWlzYWxpZ25lZF90cmFwc19jYW5fZGVsZWdhdGUoKTsKPiArfQo+ICsKPiAr c3RhdGljIGxvbmcga3ZtX3NiaV9md2Z0X3NldF9taXNhbGlnbmVkX2RlbGVnYXRpb24oc3RydWN0 IGt2bV92Y3B1ICp2Y3B1LAo+ICsJCQkJCXN0cnVjdCBrdm1fc2JpX2Z3ZnRfY29uZmlnICpjb25m LAo+ICsJCQkJCXVuc2lnbmVkIGxvbmcgdmFsdWUpCj4gK3sKPiArCXN0cnVjdCBrdm1fdmNwdV9j b25maWcgKmNmZyA9ICZ2Y3B1LT5hcmNoLmNmZzsKPiArCj4gKwlpZiAodmFsdWUgPT0gMSkgewo+ ICsJCWNmZy0+aGVkZWxlZyB8PSBNSVNfREVMRUc7Cj4gKwkJY3NyX3NldChDU1JfSEVERUxFRywg TUlTX0RFTEVHKTsKPiArCX0gZWxzZSBpZiAodmFsdWUgPT0gMCkgewo+ICsJCWNmZy0+aGVkZWxl ZyAmPSB+TUlTX0RFTEVHOwo+ICsJCWNzcl9jbGVhcihDU1JfSEVERUxFRywgTUlTX0RFTEVHKTsK PiArCX0gZWxzZSB7Cj4gKwkJcmV0dXJuIFNCSV9FUlJfSU5WQUxJRF9QQVJBTTsKPiArCX0KPiAr Cj4gKwlyZXR1cm4gU0JJX1NVQ0NFU1M7Cj4gK30KPiArCj4gK3N0YXRpYyBsb25nIGt2bV9zYmlf ZndmdF9nZXRfbWlzYWxpZ25lZF9kZWxlZ2F0aW9uKHN0cnVjdCBrdm1fdmNwdSAqdmNwdSwKPiAr CQkJCQlzdHJ1Y3Qga3ZtX3NiaV9md2Z0X2NvbmZpZyAqY29uZiwKPiArCQkJCQl1bnNpZ25lZCBs b25nICp2YWx1ZSkKPiArewo+ICsJKnZhbHVlID0gKGNzcl9yZWFkKENTUl9IRURFTEVHKSAmIE1J U19ERUxFRykgPT0gTUlTX0RFTEVHOwo+ICsKPiArCXJldHVybiBTQklfU1VDQ0VTUzsKPiArfQo+ ICsKPiAgIHN0YXRpYyBjb25zdCBzdHJ1Y3Qga3ZtX3NiaV9md2Z0X2ZlYXR1cmUgZmVhdHVyZXNb XSA9IHsKPiArCXsKPiArCQkuaWQgPSBTQklfRldGVF9NSVNBTElHTkVEX0VYQ19ERUxFRywKPiAr CQkuc3VwcG9ydGVkID0ga3ZtX3NiaV9md2Z0X21pc2FsaWduZWRfZGVsZWdhdGlvbl9zdXBwb3J0 ZWQsCj4gKwkJLnNldCA9IGt2bV9zYmlfZndmdF9zZXRfbWlzYWxpZ25lZF9kZWxlZ2F0aW9uLAo+ ICsJCS5nZXQgPSBrdm1fc2JpX2Z3ZnRfZ2V0X21pc2FsaWduZWRfZGVsZWdhdGlvbiwKPiArCX0s Cj4gICB9Owo+ICAgCj4gICBzdGF0aWMgc3RydWN0IGt2bV9zYmlfZndmdF9jb25maWcgKgoKTEdU TS4KUmV2aWV3ZWQtYnk6IEF0aXNoIFBhdHJhIDxhdGlzaHBAcml2b3NpbmMuY29tPgoKX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KbGludXgtcmlzY3YgbWFp bGluZyBsaXN0CmxpbnV4LXJpc2N2QGxpc3RzLmluZnJhZGVhZC5vcmcKaHR0cDovL2xpc3RzLmlu ZnJhZGVhZC5vcmcvbWFpbG1hbi9saXN0aW5mby9saW51eC1yaXNjdgo=