linux-kernel - Re: [PATCH v8 15/18] nitro_enclaves: Add Makefile for the Nitro Enclaves driver

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Message-ID: <f5c0f79c-f581-fab5-9a3b-97380ef7fc2a@amazon.com>
Date:   Mon, 7 Sep 2020 16:35:23 +0300
From:   "Paraschiv, Andra-Irina" <andraprs@...zon.com>
To:     Greg KH <gregkh@...uxfoundation.org>
CC:     linux-kernel <linux-kernel@...r.kernel.org>,
        Anthony Liguori <aliguori@...zon.com>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Colm MacCarthaigh <colmmacc@...zon.com>,
        David Duncan <davdunc@...zon.com>,
        Bjoern Doebel <doebel@...zon.de>,
        David Woodhouse <dwmw@...zon.co.uk>,
        "Frank van der Linden" <fllinden@...zon.com>,
        Alexander Graf <graf@...zon.de>,
        "Karen Noel" <knoel@...hat.com>,
        Martin Pohlack <mpohlack@...zon.de>,
        Matt Wilson <msw@...zon.com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Balbir Singh <sblbir@...zon.com>,
        Stefano Garzarella <sgarzare@...hat.com>,
        "Stefan Hajnoczi" <stefanha@...hat.com>,
        Stewart Smith <trawets@...zon.com>,
        "Uwe Dannowski" <uwed@...zon.de>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        kvm <kvm@...r.kernel.org>,
        ne-devel-upstream <ne-devel-upstream@...zon.com>
Subject: Re: [PATCH v8 15/18] nitro_enclaves: Add Makefile for the Nitro
 Enclaves driver



On 07/09/2020 12:00, Greg KH wrote:
>
>
> On Fri, Sep 04, 2020 at 08:37:15PM +0300, Andra Paraschiv wrote:
>> Signed-off-by: Andra Paraschiv <andraprs@...zon.com>
>> Reviewed-by: Alexander Graf <graf@...zon.com>
>> ---
>> Changelog
>>
>> v7 -> v8
>>
>> * No changes.
>>
>> v6 -> v7
>>
>> * No changes.
>>
>> v5 -> v6
>>
>> * No changes.
>>
>> v4 -> v5
>>
>> * No changes.
>>
>> v3 -> v4
>>
>> * No changes.
>>
>> v2 -> v3
>>
>> * Remove the GPL additional wording as SPDX-License-Identifier is
>>    already in place.
>>
>> v1 -> v2
>>
>> * Update path to Makefile to match the drivers/virt/nitro_enclaves
>>    directory.
>> ---
>>   drivers/virt/Makefile                |  2 ++
>>   drivers/virt/nitro_enclaves/Makefile | 11 +++++++++++
>>   2 files changed, 13 insertions(+)
>>   create mode 100644 drivers/virt/nitro_enclaves/Makefile
>>
>> diff --git a/drivers/virt/Makefile b/drivers/virt/Makefile
>> index fd331247c27a..f28425ce4b39 100644
>> --- a/drivers/virt/Makefile
>> +++ b/drivers/virt/Makefile
>> @@ -5,3 +5,5 @@
>>
>>   obj-$(CONFIG_FSL_HV_MANAGER) += fsl_hypervisor.o
>>   obj-y                                += vboxguest/
>> +
>> +obj-$(CONFIG_NITRO_ENCLAVES) += nitro_enclaves/
>> diff --git a/drivers/virt/nitro_enclaves/Makefile b/drivers/virt/nitro_enclaves/Makefile
>> new file mode 100644
>> index 000000000000..e9f4fcd1591e
>> --- /dev/null
>> +++ b/drivers/virt/nitro_enclaves/Makefile
>> @@ -0,0 +1,11 @@
>> +# SPDX-License-Identifier: GPL-2.0
>> +#
>> +# Copyright 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
>> +
>> +# Enclave lifetime management support for Nitro Enclaves (NE).
>> +
>> +obj-$(CONFIG_NITRO_ENCLAVES) += nitro_enclaves.o
>> +
>> +nitro_enclaves-y := ne_pci_dev.o ne_misc_dev.o
>> +
>> +ccflags-y += -Wall
> That flag is _really_ risky over time, are you _SURE_ that all new
> versions of clang and gcc will never produce any warnings?  People work
> to fix up build warnings quite quickly for new compilers, you shouldn't
> prevent the code from being built at all just for that, right?
>

That would also need Werror, to have warnings treated as errors and 
prevent building the codebase. If it's about something more, just let me 
know.

Would this apply to the samples directory as well, no?

I could remove the Wall flags and keep it for development validation 
purposes on my side to solve at least the warnings that would further see.

Thanks,
Andra



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