Re: [PATCH 7/8] qemu: Move TPMs validation out of PostParse

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On Mon, Jul 18, 2022 at 11:30:49 +0200, Michal Privoznik wrote:
> After previous cleanup, the qemuDomainDefTPMsPostParse() function
> does nothing more than validates TPM devices. Therefore, it
> should live in qemu_validate.c instead of qemu_domain.c. Move it
> there and rename to reflect the fact that the function is doing
> validation instead of PostParsing.
> 
> Signed-off-by: Michal Privoznik <mprivozn@xxxxxxxxxx>
> ---
>  src/qemu/qemu_domain.c   | 34 ----------------------------------
>  src/qemu/qemu_validate.c | 34 ++++++++++++++++++++++++++++++++++
>  2 files changed, 34 insertions(+), 34 deletions(-)
> 
> diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
> index bcee4d2602..e3d1bb548f 100644
> --- a/src/qemu/qemu_domain.c
> +++ b/src/qemu/qemu_domain.c

[...]

> diff --git a/src/qemu/qemu_validate.c b/src/qemu/qemu_validate.c
> index ff164118b7..ce8f92f301 100644
> --- a/src/qemu/qemu_validate.c
> +++ b/src/qemu/qemu_validate.c
> @@ -1113,6 +1113,37 @@ qemuValidateDomainDefPanic(const virDomainDef *def,
>  }
>  
>  
> +static int
> +qemuValidateDomainDefTPMs(const virDomainDef *def)
> +{
> +    const virDomainTPMDef *proxyTPM = NULL;
> +    const virDomainTPMDef *regularTPM = NULL;
> +    size_t i;

Please refactor the function to un-do unnecessarily complex logic:

> +
> +    for (i = 0; i < def->ntpms; i++) {
> +        virDomainTPMDef *tpm = def->tpms[i];
> +
> +        if (tpm->model == VIR_DOMAIN_TPM_MODEL_SPAPR_PROXY) {
> +            if (proxyTPM) {
> +                virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
> +                               _("only a single TPM Proxy device is supported"));
> +                return -1;
> +            } else {
> +                proxyTPM = tpm;
> +            }

This else section is not needed, and proxyTPM can be assigned
unconditionally.

> +        } else if (regularTPM) {

Make this into a plain 'else' and move this condition inside ...

> +            virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
> +                           _("only a single TPM non-proxy device is supported"));
> +            return -1;
> +        } else {
> +            regularTPM = tpm;

... and remove this else branch.

> +        }
> +    }
> +
> +    return 0;
> +}

Reviewed-by: Peter Krempa <pkrempa@xxxxxxxxxx>




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