[PATCH v4 12/15] KVM: arm64: nv: Add emulation for ERETAx instructions

[Jon Hunter]

On 23/04/2024 12:42, Marc Zyngier wrote:
> On Tue, 23 Apr 2024 10:40:22 +0100,
> Zenghui Yu <yuzenghui at huawei.com> wrote:
>>
>> On 2024/4/23 17:22, Jon Hunter wrote:
>>>
>>> Some of our builders currently have an older version of GCC (v6) and
>>> after this change I am seeing ...
>>>
>>>     CC      arch/arm64/kvm/pauth.o
>>> /tmp/ccohst0v.s: Assembler messages:
>>> /tmp/ccohst0v.s:1177: Error: unknown architectural extension `pauth'
>>> /tmp/ccohst0v.s:1177: Error: unknown mnemonic `pacga' -- `pacga x21,x22,x0'
>>> /local/workdir/tegra/mlt-linux_next/kernel/scripts/Makefile.build:244:
>>> recipe for target 'arch/arm64/kvm/pauth.o' failed
>>> make[5]: *** [arch/arm64/kvm/pauth.o] Error 1
>>> /local/workdir/tegra/mlt-linux_next/kernel/scripts/Makefile.build:485:
>>> recipe for target 'arch/arm64/kvm' failed
>>> make[4]: *** [arch/arm64/kvm] Error 2
>>> /local/workdir/tegra/mlt-linux_next/kernel/scripts/Makefile.build:485:
>>> recipe for target 'arch/arm64' failed
>>> make[3]: *** [arch/arm64] Error 2
>>>
>>>
>>> I know this is pretty old now and I am trying to get these builders
>>> updated. However, the kernel docs still show that GCC v5.1 is
>>> supported [0].
>>
>> Was just looking at the discussion [1] ;-) . FYI there is already a
>> patch on the list [2] which should be merged soon.
> 
> Indeed. -next as of today already has the fix, although I'm reworking
> it to take Mark's remarks into account.
> 
> Jon, can you confirm that next-20240423 builds with your setup?


Yes that is building fine today too. Thanks!

Feel free to add my ...

Tested-by: Jon Hunter <jonathanh at nvidia.com>

Jon

-- 
nvpublic