linux-kernel - Re: [PATCH 2/2] x86/xen/efi: Init only efi struct members used by Xen

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Message-ID: <20170621093216.GQ4441@olila.local.net-space.pl>
Date:   Wed, 21 Jun 2017 11:32:16 +0200
From:   Daniel Kiper <daniel.kiper@...cle.com>
To:     Ingo Molnar <mingo@...nel.org>
Cc:     linux-efi@...r.kernel.org, linux-kernel@...r.kernel.org,
        x86@...nel.org, stable@...r.kernel.org,
        xen-devel@...ts.xenproject.org, boris.ostrovsky@...cle.com,
        jgross@...e.com, tglx@...utronix.de, mingo@...hat.com,
        hpa@...or.com, matt@...eblueprint.co.uk, ard.biesheuvel@...aro.org
Subject: Re: [PATCH 2/2] x86/xen/efi: Init only efi struct members used by Xen

On Wed, Jun 21, 2017 at 11:24:06AM +0200, Ingo Molnar wrote:
>
> * Daniel Kiper <daniel.kiper@...cle.com> wrote:
>
> > -static const struct efi efi_xen __initconst = {
> > -	.systab                   = NULL, /* Initialized later. */
> > -	.runtime_version	  = 0,    /* Initialized later. */
> > -	.mps                      = EFI_INVALID_TABLE_ADDR,
> > -	.acpi                     = EFI_INVALID_TABLE_ADDR,
> > -	.acpi20                   = EFI_INVALID_TABLE_ADDR,
> > -	.smbios                   = EFI_INVALID_TABLE_ADDR,
> > -	.smbios3                  = EFI_INVALID_TABLE_ADDR,
> > -	.sal_systab               = EFI_INVALID_TABLE_ADDR,
> > -	.boot_info                = EFI_INVALID_TABLE_ADDR,
> > -	.hcdp                     = EFI_INVALID_TABLE_ADDR,
> > -	.uga                      = EFI_INVALID_TABLE_ADDR,
> > -	.uv_systab                = EFI_INVALID_TABLE_ADDR,
> > -	.fw_vendor                = EFI_INVALID_TABLE_ADDR,
> > -	.runtime                  = EFI_INVALID_TABLE_ADDR,
> > -	.config_table             = EFI_INVALID_TABLE_ADDR,
> > -	.get_time                 = xen_efi_get_time,
> > -	.set_time                 = xen_efi_set_time,
> > -	.get_wakeup_time          = xen_efi_get_wakeup_time,
> > -	.set_wakeup_time          = xen_efi_set_wakeup_time,
> > -	.get_variable             = xen_efi_get_variable,
> > -	.get_next_variable        = xen_efi_get_next_variable,
> > -	.set_variable             = xen_efi_set_variable,
> > -	.query_variable_info      = xen_efi_query_variable_info,
> > -	.update_capsule           = xen_efi_update_capsule,
> > -	.query_capsule_caps       = xen_efi_query_capsule_caps,
> > -	.get_next_high_mono_count = xen_efi_get_next_high_mono_count,
> > -	.reset_system             = xen_efi_reset_system,
> > -	.set_virtual_address_map  = NULL, /* Not used under Xen. */
> > -	.flags			  = 0     /* Initialized later. */
> > -};
> > -
> >  static efi_system_table_t __init *xen_efi_probe(void)
> >  {
> >  	struct xen_platform_op op = {
> > @@ -102,7 +70,18 @@ static efi_system_table_t __init *xen_efi_probe(void)
> >
> >  	/* Here we know that Xen runs on EFI platform. */
> >
> > -	efi = efi_xen;
> > +	efi.get_time = xen_efi_get_time;
> > +	efi.set_time = xen_efi_set_time;
> > +	efi.get_wakeup_time = xen_efi_get_wakeup_time;
> > +	efi.set_wakeup_time = xen_efi_set_wakeup_time;
> > +	efi.get_variable = xen_efi_get_variable;
> > +	efi.get_next_variable = xen_efi_get_next_variable;
> > +	efi.set_variable = xen_efi_set_variable;
> > +	efi.query_variable_info = xen_efi_query_variable_info;
> > +	efi.update_capsule = xen_efi_update_capsule;
> > +	efi.query_capsule_caps = xen_efi_query_capsule_caps;
> > +	efi.get_next_high_mono_count = xen_efi_get_next_high_mono_count;
> > +	efi.reset_system = xen_efi_reset_system;
>
> This is a step back stylistically, as you lost the nice vertical tabulation of the
> original initializer ...

If you wish and others do not object I can realign it back.

Daniel