Re: [pve-devel] [PATCH pve-manager v4 4/4] Add configuration options for AMD SEV-SNP

[Markus Frank <m.frank@proxmox.com>]

Hello,

I noticed that currently I cannot disable 'allow-smt' in the WebUI.
The default value for allow-smt in qemu-server is '1'.
So setting it to 1 or no value in the WebUI results in allow-smt always being enabled.
To fix this, you can explicitly set allow-smt to 0 when the checkbox is not checked.
Also, currently if I uncheck the allow-smt checkbox, save it to config and then
reopen the window, the 'Allow SMT' checkbox is checked again.

See my suggested fixes inline:

On  2025-03-11 16:04, Philipp Giersfeld wrote:
> Expand input panel with AMD SEV-SNP selection, and relevant optional
> parameters similar to existing options for AMD SEV(-ES).
> 
> Further, upon selecting AMD SEV-SNP, issue a warning that EFI disks are
> not included when using SEV-SNP.
> 
> Signed-off-by: Philipp Giersfeld <philipp.giersfeld@canarybit.eu>
> Reviewed-by: Daniel Kral <d.kral@proxmox.com>
> ---
> 
>   no changes since last version
> 
>   www/manager6/qemu/Options.js |  1 +
>   www/manager6/qemu/SevEdit.js | 46 ++++++++++++++++++++++++++++++++----
>   2 files changed, 42 insertions(+), 5 deletions(-)
> 
> diff --git a/www/manager6/qemu/Options.js b/www/manager6/qemu/Options.js
> index cbe9e52b..49a921cd 100644
> --- a/www/manager6/qemu/Options.js
> +++ b/www/manager6/qemu/Options.js
> @@ -346,6 +346,7 @@ Ext.define('PVE.qemu.Options', {
>   		    let amd_sev = PVE.Parser.parsePropertyString(value, "type");
>   		    if (amd_sev.type === 'std') return 'AMD SEV (' + value + ')';
>   		    if (amd_sev.type === 'es') return 'AMD SEV-ES (' + value + ')';
> +		    if (amd_sev.type === 'snp') return 'AMD SEV-SNP (' + value + ')';
>   		    return value;
>   		},
>   	    },
> diff --git a/www/manager6/qemu/SevEdit.js b/www/manager6/qemu/SevEdit.js
> index a2080f2d..3e0d0cbb 100644
> --- a/www/manager6/qemu/SevEdit.js
> +++ b/www/manager6/qemu/SevEdit.js
> @@ -9,7 +9,8 @@ Ext.define('PVE.qemu.SevInputPanel', {
>   	    type: '__default__',
>   	},
>   	formulas: {
> -	    sevEnabled: get => get('type') !== '__default__',
> +	    sevEnabled: get => get('type') === 'std' || get('type') === 'es' || get('type') === 'snp',
> +	    snpEnabled: get => get('type') === 'snp',
>   	},
>       },
>   
> @@ -21,10 +22,14 @@ Ext.define('PVE.qemu.SevInputPanel', {
>   	if (!values.debug) {
>   	    values["no-debug"] = 1;
>   	}
> -	if (!values["key-sharing"]) {
> +	if (values.smt) {
> +	    values["allow-smt"] = 1;
> +	}
You could replace the if above with something like this:

if (!values.smt && values.type === 'snp') {
     values["allow-smt"] = 0;
}

> +	if (!values["key-sharing"] && values.type !== 'snp') {
>   	    values["no-key-sharing"] = 1;
>   	}
>   	delete values.debug;
> +	delete values.smt;
>   	delete values["key-sharing"];
>   	let ret = {};
>   	ret['amd-sev'] = PVE.Parser.printPropertyString(values, 'type');
> @@ -36,13 +41,16 @@ Ext.define('PVE.qemu.SevInputPanel', {
>   	if (PVE.Parser.parseBoolean(values["no-debug"])) {
>   	    values.debug = 0;
>   	}
> +	if (PVE.Parser.parseBoolean(values["allow-smt"])) {
> +	    values.smt = 1;
> +	}
You could replace the if above with something like this:

values.smt = PVE.Parser.parseBoolean(values["allow-smt"], 1);

>   	if (PVE.Parser.parseBoolean(values["no-key-sharing"])) {
>   	    values["key-sharing"] = 0;
>   	}
>   	this.callParent(arguments);
>       },
>   
> -    items: {
> +	items: [{
>   	xtype: 'proxmoxKVComboBox',
>   	fieldLabel: gettext('AMD SEV Type'),
>   	labelWidth: 150,
> @@ -52,11 +60,28 @@ Ext.define('PVE.qemu.SevInputPanel', {
>   	    ['__default__', Proxmox.Utils.defaultText + ' (' + Proxmox.Utils.disabledText + ')'],
>   	    ['std', 'AMD SEV'],
>   	    ['es', 'AMD SEV-ES (highly experimental)'],
> +	    ['snp', 'AMD SEV-SNP (highly experimental)'],
>   	],
>   	bind: {
>   	    value: '{type}',
>   	},
>       },
> +    {
> +	xtype: 'displayfield',
> +	userCls: 'pmx-hint',
> +	value: gettext('WARNING: When using SEV-SNP no EFI disk is loaded as pflash.'),
> +	bind: {
> +	    hidden: '{!snpEnabled}',
> +	},
> +    },
> +    {
> +	xtype: 'displayfield',
> +	userCls: 'pmx-hint',
> +	value: gettext('Note: SEV-SNP requires host kernel version 6.11 or higher.'),
> +	bind: {
> +	    hidden: '{!snpEnabled}',
> +	},
> +    }],
>   
>       advancedItems: [
>   	{
> @@ -77,8 +102,19 @@ Ext.define('PVE.qemu.SevInputPanel', {
>   	    name: 'key-sharing',
>   	    value: 1,
>   	    bind: {
> -		hidden: '{!sevEnabled}',
> -		disabled: '{!sevEnabled}',
> +		hidden: '{!sevEnabled || snpEnabled}',
> +		disabled: '{!sevEnabled || snpEnabled}',
> +	    },
> +	},
> +	{
> +	    xtype: 'proxmoxcheckbox',
> +	    fieldLabel: gettext('Allow SMT'),
> +	    labelWidth: 150,
> +	    name: 'smt',
> +	    value: 1,
> +	    bind: {
> +		hidden: '{!snpEnabled}',
> +		disabled: '{!snpEnabled}',
>   	    },
>   	},
>   	{



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