From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 C41EA55E43; Tue, 30 Jan 2024 07:52:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706601123; cv=none; b=d5kx+ElwGHBJo2Yjgeiv3263gGVLGoOzyizUzJEbtVFwTsn42vXK3fk9RPxaQrk4VBvfe4fuDqklWIYh8dzxErAOG4EyJttSV0FpxBXJbha6oiMZ0BQ/763kQ3KM47uRNshiu47oA22VxXEHY/ocDD4935tiA9QOmFo6lBSSgG4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706601123; c=relaxed/simple; bh=GLh8dsTxNo9L/3+mC7DJTQzGc6JkyJok3IVl4QHNXYU=; h=From:To:Cc:Subject:In-Reply-To:References:Date:Message-ID: MIME-Version:Content-Type; b=RngDFqS0x4Toe4i2/3+MwiNo9+MeGR7TinF+RDmEWjBzQBiahBCR6EtpqkmI3xk6RwCDCUzJnEqKAV1jI7Ir8HMtWeBXaktPCeuPqRqrfrSIbG/9ulqio3pF4/5jDcHEXceaHFlOAzWNeN3zE3zQre3i1WfnVbKW9GLFjXxXf3w= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=FWMHD4uk; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="FWMHD4uk" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B316EC43390; Tue, 30 Jan 2024 07:52:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1706601123; bh=GLh8dsTxNo9L/3+mC7DJTQzGc6JkyJok3IVl4QHNXYU=; h=From:To:Cc:Subject:In-Reply-To:References:Date:From; b=FWMHD4ukg84VQQPcUzdvYkTpZEolvS89PLEDeqEObNoHN6dL7wtbGcKftgA5f0MnW uck/JCMbyizznWP9cehzht1F7w3uyMnGd59ivYIhMQrNY/kdrHevXcgDae+uAzjbfV SHzW91Hnj4ixeD1cFhI7ivDYTkGxdJypmFkNCjRz8Mce3Ax6SIygyjfzJ7KuzAMGU1 xBy+9KZ7NQ7/rlbKIViFDqfVMM16BBLd5XgHkRlDOaJ2WKUnVJYI35CKEaJ/5YDnWT HKh5jfb388949enb8epNogYKvqi7b9ve3VWDIkKwMV/fZIs9oySE6JSqz69xM2MRJK vjE8q+tzh/h9A== From: =?utf-8?B?QmrDtnJuIFTDtnBlbA==?= To: Anup Patel , Palmer Dabbelt , Paul Walmsley , Thomas Gleixner , Rob Herring , Krzysztof Kozlowski , Frank Rowand , Conor Dooley Cc: Anup Patel , devicetree@vger.kernel.org, Saravana Kannan , Marc Zyngier , Anup Patel , linux-kernel@vger.kernel.org, Atish Patra , linux-riscv@lists.infradead.org, linux-arm-kernel@lists.infradead.org, Andrew Jones Subject: Re: [PATCH v12 00/25] Linux RISC-V AIA Support In-Reply-To: <87r0hzuw87.fsf@all.your.base.are.belong.to.us> References: <20240127161753.114685-1-apatel@ventanamicro.com> <87r0hzuw87.fsf@all.your.base.are.belong.to.us> Date: Tue, 30 Jan 2024 08:52:00 +0100 Message-ID: <87le87uulb.fsf@all.your.base.are.belong.to.us> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Bj=C3=B6rn T=C3=B6pel writes: > Anup Patel writes: > >> The RISC-V AIA specification is ratified as-per the RISC-V international >> process. The latest ratified AIA specifcation can be found at: >> https://github.com/riscv/riscv-aia/releases/download/1.0/riscv-interrupt= s-1.0.pdf >> >> At a high-level, the AIA specification adds three things: >> 1) AIA CSRs >> - Improved local interrupt support >> 2) Incoming Message Signaled Interrupt Controller (IMSIC) >> - Per-HART MSI controller >> - Support MSI virtualization >> - Support IPI along with virtualization >> 3) Advanced Platform-Level Interrupt Controller (APLIC) >> - Wired interrupt controller >> - In MSI-mode, converts wired interrupt into MSIs (i.e. MSI generator) >> - In Direct-mode, injects external interrupts directly into HARTs >> >> For an overview of the AIA specification, refer the AIA virtualization >> talk at KVM Forum 2022: >> https://static.sched.com/hosted_files/kvmforum2022/a1/AIA_Virtualization= _in_KVM_RISCV_final.pdf >> https://www.youtube.com/watch?v=3Dr071dL8Z0yo >> >> To test this series, use QEMU v7.2 (or higher) and OpenSBI v1.2 (or high= er). >> >> These patches can also be found in the riscv_aia_v12 branch at: >> https://github.com/avpatel/linux.git >> >> Changes since v11: >> - Rebased on Linux-6.8-rc1 >> - Included kernel/irq related patches from "genirq, irqchip: Convert ARM >> MSI handling to per device MSI domains" series by Thomas. >> (PATCH7, PATCH8, PATCH9, PATCH14, PATCH16, PATCH17, PATCH18, PATCH19, >> PATCH20, PATCH21, PATCH22, PATCH23, and PATCH32 of >> https://lore.kernel.org/linux-arm-kernel/20221121135653.208611233@li= nutronix.de/) >> - Updated APLIC MSI-mode driver to use the new WIRED_TO_MSI mechanism. >> - Updated IMSIC driver to support per-device MSI domains for PCI and >> platform devices. > > Thanks for working on this, Anup! I'm still reviewing the patches. > > I'm hitting a boot hang in text patching, with this series applied on > 6.8-rc2. IPI issues? Not text patching! One cpu spinning in smp_call_function_many_cond() and the others are in cpu_relax(). Smells like IPI... 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charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org QmrDtnJuIFTDtnBlbCA8Ympvcm5Aa2VybmVsLm9yZz4gd3JpdGVzOgoKPiBBbnVwIFBhdGVsIDxh cGF0ZWxAdmVudGFuYW1pY3JvLmNvbT4gd3JpdGVzOgo+Cj4+IFRoZSBSSVNDLVYgQUlBIHNwZWNp ZmljYXRpb24gaXMgcmF0aWZpZWQgYXMtcGVyIHRoZSBSSVNDLVYgaW50ZXJuYXRpb25hbAo+PiBw cm9jZXNzLiBUaGUgbGF0ZXN0IHJhdGlmaWVkIEFJQSBzcGVjaWZjYXRpb24gY2FuIGJlIGZvdW5k IGF0Ogo+PiBodHRwczovL2dpdGh1Yi5jb20vcmlzY3YvcmlzY3YtYWlhL3JlbGVhc2VzL2Rvd25s b2FkLzEuMC9yaXNjdi1pbnRlcnJ1cHRzLTEuMC5wZGYKPj4KPj4gQXQgYSBoaWdoLWxldmVsLCB0 aGUgQUlBIHNwZWNpZmljYXRpb24gYWRkcyB0aHJlZSB0aGluZ3M6Cj4+IDEpIEFJQSBDU1JzCj4+ ICAgIC0gSW1wcm92ZWQgbG9jYWwgaW50ZXJydXB0IHN1cHBvcnQKPj4gMikgSW5jb21pbmcgTWVz c2FnZSBTaWduYWxlZCBJbnRlcnJ1cHQgQ29udHJvbGxlciAoSU1TSUMpCj4+ICAgIC0gUGVyLUhB UlQgTVNJIGNvbnRyb2xsZXIKPj4gICAgLSBTdXBwb3J0IE1TSSB2aXJ0dWFsaXphdGlvbgo+PiAg ICAtIFN1cHBvcnQgSVBJIGFsb25nIHdpdGggdmlydHVhbGl6YXRpb24KPj4gMykgQWR2YW5jZWQg UGxhdGZvcm0tTGV2ZWwgSW50ZXJydXB0IENvbnRyb2xsZXIgKEFQTElDKQo+PiAgICAtIFdpcmVk IGludGVycnVwdCBjb250cm9sbGVyCj4+ICAgIC0gSW4gTVNJLW1vZGUsIGNvbnZlcnRzIHdpcmVk IGludGVycnVwdCBpbnRvIE1TSXMgKGkuZS4gTVNJIGdlbmVyYXRvcikKPj4gICAgLSBJbiBEaXJl Y3QtbW9kZSwgaW5qZWN0cyBleHRlcm5hbCBpbnRlcnJ1cHRzIGRpcmVjdGx5IGludG8gSEFSVHMK Pj4KPj4gRm9yIGFuIG92ZXJ2aWV3IG9mIHRoZSBBSUEgc3BlY2lmaWNhdGlvbiwgcmVmZXIgdGhl IEFJQSB2aXJ0dWFsaXphdGlvbgo+PiB0YWxrIGF0IEtWTSBGb3J1bSAyMDIyOgo+PiBodHRwczov L3N0YXRpYy5zY2hlZC5jb20vaG9zdGVkX2ZpbGVzL2t2bWZvcnVtMjAyMi9hMS9BSUFfVmlydHVh bGl6YXRpb25faW5fS1ZNX1JJU0NWX2ZpbmFsLnBkZgo+PiBodHRwczovL3d3dy55b3V0dWJlLmNv bS93YXRjaD92PXIwNzFkTDhaMHlvCj4+Cj4+IFRvIHRlc3QgdGhpcyBzZXJpZXMsIHVzZSBRRU1V IHY3LjIgKG9yIGhpZ2hlcikgYW5kIE9wZW5TQkkgdjEuMiAob3IgaGlnaGVyKS4KPj4KPj4gVGhl c2UgcGF0Y2hlcyBjYW4gYWxzbyBiZSBmb3VuZCBpbiB0aGUgcmlzY3ZfYWlhX3YxMiBicmFuY2gg YXQ6Cj4+IGh0dHBzOi8vZ2l0aHViLmNvbS9hdnBhdGVsL2xpbnV4LmdpdAo+Pgo+PiBDaGFuZ2Vz IHNpbmNlIHYxMToKPj4gIC0gUmViYXNlZCBvbiBMaW51eC02LjgtcmMxCj4+ICAtIEluY2x1ZGVk IGtlcm5lbC9pcnEgcmVsYXRlZCBwYXRjaGVzIGZyb20gImdlbmlycSwgaXJxY2hpcDogQ29udmVy dCBBUk0KPj4gICAgTVNJIGhhbmRsaW5nIHRvIHBlciBkZXZpY2UgTVNJIGRvbWFpbnMiIHNlcmll cyBieSBUaG9tYXMuCj4+ICAgIChQQVRDSDcsIFBBVENIOCwgUEFUQ0g5LCBQQVRDSDE0LCBQQVRD SDE2LCBQQVRDSDE3LCBQQVRDSDE4LCBQQVRDSDE5LAo+PiAgICAgUEFUQ0gyMCwgUEFUQ0gyMSwg UEFUQ0gyMiwgUEFUQ0gyMywgYW5kIFBBVENIMzIgb2YKPj4gICAgIGh0dHBzOi8vbG9yZS5rZXJu ZWwub3JnL2xpbnV4LWFybS1rZXJuZWwvMjAyMjExMjExMzU2NTMuMjA4NjExMjMzQGxpbnV0cm9u aXguZGUvKQo+PiAgLSBVcGRhdGVkIEFQTElDIE1TSS1tb2RlIGRyaXZlciB0byB1c2UgdGhlIG5l dyBXSVJFRF9UT19NU0kgbWVjaGFuaXNtLgo+PiAgLSBVcGRhdGVkIElNU0lDIGRyaXZlciB0byBz dXBwb3J0IHBlci1kZXZpY2UgTVNJIGRvbWFpbnMgZm9yIFBDSSBhbmQKPj4gICAgcGxhdGZvcm0g ZGV2aWNlcy4KPgo+IFRoYW5rcyBmb3Igd29ya2luZyBvbiB0aGlzLCBBbnVwISBJJ20gc3RpbGwg cmV2aWV3aW5nIHRoZSBwYXRjaGVzLgo+Cj4gSSdtIGhpdHRpbmcgYSBib290IGhhbmcgaW4gdGV4 dCBwYXRjaGluZywgd2l0aCB0aGlzIHNlcmllcyBhcHBsaWVkIG9uCj4gNi44LXJjMi4gSVBJIGlz c3Vlcz8KCk5vdCB0ZXh0IHBhdGNoaW5nISBPbmUgY3B1IHNwaW5uaW5nIGluIHNtcF9jYWxsX2Z1 bmN0aW9uX21hbnlfY29uZCgpIGFuZAp0aGUgb3RoZXJzIGFyZSBpbiBjcHVfcmVsYXgoKS4gU21l bGxzIGxpa2UgSVBJLi4uCgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fXwpsaW51eC1hcm0ta2VybmVsIG1haWxpbmcgbGlzdApsaW51eC1hcm0ta2VybmVsQGxp c3RzLmluZnJhZGVhZC5vcmcKaHR0cDovL2xpc3RzLmluZnJhZGVhZC5vcmcvbWFpbG1hbi9saXN0 aW5mby9saW51eC1hcm0ta2VybmVsCg==