From: Filip Schauer <f.schauer@proxmox.com>
To: Fiona Ebner <f.ebner@proxmox.com>,
Proxmox VE development discussion <pve-devel@lists.proxmox.com>
Subject: Re: [pve-devel] [PATCH v5 qemu-server] Prevent starting a 32-bit VM using a 64-bit OVMF BIOS
Date: Thu, 14 Dec 2023 12:10:50 +0100 [thread overview]
Message-ID: <15e46ae1-12d8-4482-ba0a-7ccc0994b7eb@proxmox.com> (raw)
In-Reply-To: <e840e47a-04ce-4f3e-8b04-2355edf8c395@proxmox.com>
Patch v6 available:
https://lists.proxmox.com/pipermail/pve-devel/2023-December/061097.html
On 14/12/2023 10:46, Fiona Ebner wrote:
> Am 13.12.23 um 17:58 schrieb Filip Schauer:
>> @@ -719,6 +731,26 @@ sub get_cpu_from_running_vm {
>> return $1;
>> }
>>
>> +sub get_cpu_bitness {
> Learned a new word today :)
>
>> + my ($conf, $arch) = @_;
> Please pass either the CPU property string or the CPU type directly
> instead of the whole config. Makes it more re-usable and modular.
>
>> +
>> + return if !$conf or !$arch;
> There always is an arch and a CPU type, so IMHO, we should make the
> caller responsible for passing in something valid. I.e. I'd rather die
> than "hide" the issue by returning undef. For the CPU type, we could
> also fall back to the default if nothing got passed in (we got access to
> $cpu_fmt in the module).
>
>> +
>> + if ($arch eq 'x86_64') {
>> + if (my $cpu_prop_str = $conf->{cpu}) {
>> + my $cpu = PVE::JSONSchema::parse_property_string('pve-vm-cpu-conf', $cpu_prop_str)
>> + or die "Cannot parse cpu description: $cpu_prop_str\n";
>> +
>> + my $cputype = $cpu->{cputype};
>> + return 32 if $cputypes_32bit->{$cputype};
>> + }
>> +
>> + return 64;
>> + }
>> +
>> + return 64 if $arch eq 'aarch64';
>> +}
> I'd rather die then return undef if it's an unknown arch. Then it will
> be more obvious if we forget to extend the helper. Because Perl itself
> will not complain if we forget.
prev parent reply other threads:[~2023-12-14 11:10 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-13 16:58 Filip Schauer
2023-12-14 9:46 ` Fiona Ebner
2023-12-14 11:10 ` Filip Schauer [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=15e46ae1-12d8-4482-ba0a-7ccc0994b7eb@proxmox.com \
--to=f.schauer@proxmox.com \
--cc=f.ebner@proxmox.com \
--cc=pve-devel@lists.proxmox.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox