Received-SPF: pass (google.com: domain of linux-kernel+bounces-76563-linux.lists.archive=gmail.com@vger.kernel.org designates 147.75.199.223 as permitted sender) client-ip=147.75.199.223;
Message-ID: <06601518-16fa-4daf-abac-d359baffc888@redhat.com>
Date: Thu, 22 Feb 2024 14:11:54 +0100
Precedence: bulk
MIME-Version: 1.0
User-Agent: Mozilla Thunderbird
Subject: Re: linux-next: build failure after merge of the kvm-arm tree
Content-Language: en-US
To: Stephen Rothwell <sfr@canb.auug.org.au>, Joey Gouly <joey.gouly@arm.com>,
 Oliver Upton <oupton@google.com>, Marc Zyngier <maz@kernel.org>
Cc: Christoffer Dall <cdall@cs.columbia.edu>, KVM <kvm@vger.kernel.org>,
 Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
 Linux Next Mailing List <linux-next@vger.kernel.org>
References: <20240222220349.1889c728@canb.auug.org.au>
 <20240222111129.GA946362@e124191.cambridge.arm.com>
 <20240222224041.782761fd@canb.auug.org.au>
From: Paolo Bonzini <pbonzini@redhat.com>
Autocrypt: addr=pbonzini@redhat.com; keydata=
 xsEhBFRCcBIBDqDGsz4K0zZun3jh+U6Z9wNGLKQ0kSFyjN38gMqU1SfP+TUNQepFHb/Gc0E2
 CxXPkIBTvYY+ZPkoTh5xF9oS1jqI8iRLzouzF8yXs3QjQIZ2SfuCxSVwlV65jotcjD2FTN04
 hVopm9llFijNZpVIOGUTqzM4U55sdsCcZUluWM6x4HSOdw5F5Utxfp1wOjD/v92Lrax0hjiX
 DResHSt48q+8FrZzY+AUbkUS+Jm34qjswdrgsC5uxeVcLkBgWLmov2kMaMROT0YmFY6A3m1S
 P/kXmHDXxhe23gKb3dgwxUTpENDBGcfEzrzilWueOeUWiOcWuFOed/C3SyijBx3Av/lbCsHU
 Vx6pMycNTdzU1BuAroB+Y3mNEuW56Yd44jlInzG2UOwt9XjjdKkJZ1g0P9dwptwLEgTEd3Fo
 UdhAQyRXGYO8oROiuh+RZ1lXp6AQ4ZjoyH8WLfTLf5g1EKCTc4C1sy1vQSdzIRu3rBIjAvnC
 tGZADei1IExLqB3uzXKzZ1BZ+Z8hnt2og9hb7H0y8diYfEk2w3R7wEr+Ehk5NQsT2MPI2QBd
 wEv1/Aj1DgUHZAHzG1QN9S8wNWQ6K9DqHZTBnI1hUlkp22zCSHK/6FwUCuYp1zcAEQEAAc0j
 UGFvbG8gQm9uemluaSA8cGJvbnppbmlAcmVkaGF0LmNvbT7CwU0EEwECACMFAlRCcBICGwMH
 CwkIBwMCAQYVCAIJCgsEFgIDAQIeAQIXgAAKCRB+FRAMzTZpsbceDp9IIN6BIA0Ol7MoB15E
 11kRz/ewzryFY54tQlMnd4xxfH8MTQ/mm9I482YoSwPMdcWFAKnUX6Yo30tbLiNB8hzaHeRj
 jx12K+ptqYbg+cevgOtbLAlL9kNgLLcsGqC2829jBCUTVeMSZDrzS97ole/YEez2qFpPnTV0
 VrRWClWVfYh+JfzpXmgyhbkuwUxNFk421s4Ajp3d8nPPFUGgBG5HOxzkAm7xb1cjAuJ+oi/K
 CHfkuN+fLZl/u3E/fw7vvOESApLU5o0icVXeakfSz0LsygEnekDbxPnE5af/9FEkXJD5EoYG
 SEahaEtgNrR4qsyxyAGYgZlS70vkSSYJ+iT2rrwEiDlo31MzRo6Ba2FfHBSJ7lcYdPT7bbk9
 AO3hlNMhNdUhoQv7M5HsnqZ6unvSHOKmReNaS9egAGdRN0/GPDWr9wroyJ65ZNQsHl9nXBqE
 AukZNr5oJO5vxrYiAuuTSd6UI/xFkjtkzltG3mw5ao2bBpk/V/YuePrJsnPFHG7NhizrxttB
 nTuOSCMo45pfHQ+XYd5K1+Cv/NzZFNWscm5htJ0HznY+oOsZvHTyGz3v91pn51dkRYN0otqr
 bQ4tlFFuVjArBZcapSIe6NV8C4cEiSTOwE0EVEJx7gEIAMeHcVzuv2bp9HlWDp6+RkZe+vtl
 KwAHplb/WH59j2wyG8V6i33+6MlSSJMOFnYUCCL77bucx9uImI5nX24PIlqT+zasVEEVGSRF
 m8dgkcJDB7Tps0IkNrUi4yof3B3shR+vMY3i3Ip0e41zKx0CvlAhMOo6otaHmcxr35sWq1Jk
 tLkbn3wG+fPQCVudJJECvVQ//UAthSSEklA50QtD2sBkmQ14ZryEyTHQ+E42K3j2IUmOLriF
 dNr9NvE1QGmGyIcbw2NIVEBOK/GWxkS5+dmxM2iD4Jdaf2nSn3jlHjEXoPwpMs0KZsgdU0pP
 JQzMUMwmB1wM8JxovFlPYrhNT9MAEQEAAcLBMwQYAQIACQUCVEJx7gIbDAAKCRB+FRAMzTZp
 sadRDqCctLmYICZu4GSnie4lKXl+HqlLanpVMOoFNnWs9oRP47MbE2wv8OaYh5pNR9VVgyhD
 OG0AU7oidG36OeUlrFDTfnPYYSF/mPCxHttosyt8O5kabxnIPv2URuAxDByz+iVbL+RjKaGM
 GDph56ZTswlx75nZVtIukqzLAQ5fa8OALSGum0cFi4ptZUOhDNz1onz61klD6z3MODi0sBZN
 Aj6guB2L/+2ZwElZEeRBERRd/uommlYuToAXfNRdUwrwl9gRMiA0WSyTb190zneRRDfpSK5d
 usXnM/O+kr3Dm+Ui+UioPf6wgbn3T0o6I5BhVhs4h4hWmIW7iNhPjX1iybXfmb1gAFfjtHfL
 xRUr64svXpyfJMScIQtBAm0ihWPltXkyITA92ngCmPdHa6M1hMh4RDX+Jf1fiWubzp1voAg0
 JBrdmNZSQDz0iKmSrx8xkoXYfA3bgtFN8WJH2xgFL28XnqY4M6dLhJwV3z08tPSRqYFm4NMP
 dRsn0/7oymhneL8RthIvjDDQ5ktUjMe8LtHr70OZE/TT88qvEdhiIVUogHdo4qBrk41+gGQh
 b906Dudw5YhTJFU3nC6bbF2nrLlB4C/XSiH76ZvqzV0Z/cAMBo5NF/w=
In-Reply-To: <20240222224041.782761fd@canb.auug.org.au>
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 7bit

On 2/22/24 12:40, Stephen Rothwell wrote:
>> This fails because https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git/commit/?id=fdd867fe9b32
>> added new fields to that register (ID_AA64DFR1_EL1)
>>
>> and commit b80b701d5a6 ("KVM: arm64: Snapshot all non-zero RES0/RES1 sysreg fields for later checking")
>> took a snapshot of the fields, so the RES0 (reserved 0) bits don't match anymore.
>>
>> Not sure how to resolve it in the git branches though.
> 
> Thanks.  I will apply this patch to the merge of the kvm-arm tree from
> tomorrow (and at the end of today's tree).

Marc, Iliver, can you get a topic branch from Catalin and friends for 
this sysreg patch, and apply the fixup directly to the kvm-arm branch in 
the merge commit?

Not _necessary_, as I can always ask Linus to do the fixup, but 
generally he prefers to have this sorted out by the maintainers if it is 
detected by linux-next.

Paolo


> From: Stephen Rothwell <sfr@canb.auug.org.au>
> Date: Thu, 22 Feb 2024 22:31:22 +1100
> Subject: [PATCH] fix up for "arm64/sysreg: Add register fields for ID_AA64DFR1_EL1"
> 
> interacting with "KVM: arm64: Snapshot all non-zero RES0/RES1 sysreg fields for later checking"
> 
> Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
> ---
>   arch/arm64/kvm/check-res-bits.h | 1 -
>   1 file changed, 1 deletion(-)
> 
> diff --git a/arch/arm64/kvm/check-res-bits.h b/arch/arm64/kvm/check-res-bits.h
> index 967b5d171d53..39f537875d17 100644
> --- a/arch/arm64/kvm/check-res-bits.h
> +++ b/arch/arm64/kvm/check-res-bits.h
> @@ -55,7 +55,6 @@ static inline void check_res_bits(void)
>   	BUILD_BUG_ON(ID_AA64SMFR0_EL1_RES0	!= (GENMASK_ULL(62, 61) | GENMASK_ULL(51, 49) | GENMASK_ULL(31, 31) | GENMASK_ULL(27, 0)));
>   	BUILD_BUG_ON(ID_AA64FPFR0_EL1_RES0	!= (GENMASK_ULL(63, 32) | GENMASK_ULL(27, 2)));
>   	BUILD_BUG_ON(ID_AA64DFR0_EL1_RES0	!= (GENMASK_ULL(27, 24) | GENMASK_ULL(19, 16)));
> -	BUILD_BUG_ON(ID_AA64DFR1_EL1_RES0	!= (GENMASK_ULL(63, 0)));
>   	BUILD_BUG_ON(ID_AA64AFR0_EL1_RES0	!= (GENMASK_ULL(63, 32)));
>   	BUILD_BUG_ON(ID_AA64AFR1_EL1_RES0	!= (GENMASK_ULL(63, 0)));
>   	BUILD_BUG_ON(ID_AA64ISAR0_EL1_RES0	!= (GENMASK_ULL(3, 0)));