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Tue, 13 Jan 2026 01:23:20 -0800 (PST) Message-ID: <54667383-d1ff-467f-9dfc-95d23aa600cc@suse.com> Date: Tue, 13 Jan 2026 10:23:20 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Content-Language: en-US To: "xen-devel@lists.xenproject.org" Cc: Andrew Cooper , =?UTF-8?Q?Roger_Pau_Monn=C3=A9?= From: Jan Beulich Subject: [PATCH] x86/platform: adjust CONFIG_VIDEO usage Autocrypt: addr=jbeulich@suse.com; keydata= xsDiBFk3nEQRBADAEaSw6zC/EJkiwGPXbWtPxl2xCdSoeepS07jW8UgcHNurfHvUzogEq5xk hu507c3BarVjyWCJOylMNR98Yd8VqD9UfmX0Hb8/BrA+Hl6/DB/eqGptrf4BSRwcZQM32aZK 7Pj2XbGWIUrZrd70x1eAP9QE3P79Y2oLrsCgbZJfEwCgvz9JjGmQqQkRiTVzlZVCJYcyGGsD /0tbFCzD2h20ahe8rC1gbb3K3qk+LpBtvjBu1RY9drYk0NymiGbJWZgab6t1jM7sk2vuf0Py O9Hf9XBmK0uE9IgMaiCpc32XV9oASz6UJebwkX+zF2jG5I1BfnO9g7KlotcA/v5ClMjgo6Gl MDY4HxoSRu3i1cqqSDtVlt+AOVBJBACrZcnHAUSuCXBPy0jOlBhxPqRWv6ND4c9PH1xjQ3NP nxJuMBS8rnNg22uyfAgmBKNLpLgAGVRMZGaGoJObGf72s6TeIqKJo/LtggAS9qAUiuKVnygo 3wjfkS9A3DRO+SpU7JqWdsveeIQyeyEJ/8PTowmSQLakF+3fote9ybzd880fSmFuIEJldWxp Y2ggPGpiZXVsaWNoQHN1c2UuY29tPsJgBBMRAgAgBQJZN5xEAhsDBgsJCAcDAgQVAggDBBYC AwECHgECF4AACgkQoDSui/t3IH4J+wCfQ5jHdEjCRHj23O/5ttg9r9OIruwAn3103WUITZee e7Sbg12UgcQ5lv7SzsFNBFk3nEQQCACCuTjCjFOUdi5Nm244F+78kLghRcin/awv+IrTcIWF hUpSs1Y91iQQ7KItirz5uwCPlwejSJDQJLIS+QtJHaXDXeV6NI0Uef1hP20+y8qydDiVkv6l IreXjTb7DvksRgJNvCkWtYnlS3mYvQ9NzS9PhyALWbXnH6sIJd2O9lKS1Mrfq+y0IXCP10eS FFGg+Av3IQeFatkJAyju0PPthyTqxSI4lZYuJVPknzgaeuJv/2NccrPvmeDg6Coe7ZIeQ8Yj t0ARxu2xytAkkLCel1Lz1WLmwLstV30g80nkgZf/wr+/BXJW/oIvRlonUkxv+IbBM3dX2OV8 AmRv1ySWPTP7AAMFB/9PQK/VtlNUJvg8GXj9ootzrteGfVZVVT4XBJkfwBcpC/XcPzldjv+3 HYudvpdNK3lLujXeA5fLOH+Z/G9WBc5pFVSMocI71I8bT8lIAzreg0WvkWg5V2WZsUMlnDL9 mpwIGFhlbM3gfDMs7MPMu8YQRFVdUvtSpaAs8OFfGQ0ia3LGZcjA6Ik2+xcqscEJzNH+qh8V m5jjp28yZgaqTaRbg3M/+MTbMpicpZuqF4rnB0AQD12/3BNWDR6bmh+EkYSMcEIpQmBM51qM EKYTQGybRCjpnKHGOxG0rfFY1085mBDZCH5Kx0cl0HVJuQKC+dV2ZY5AqjcKwAxpE75MLFkr wkkEGBECAAkFAlk3nEQCGwwACgkQoDSui/t3IH7nnwCfcJWUDUFKdCsBH/E5d+0ZnMQi+G0A nAuWpQkjM1ASeQwSHEeAWPgskBQL Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: pass (identity @suse.com) X-ZM-MESSAGEID: 1768296230818158500 Content-Type: text/plain; charset="utf-8" Switch to using IS_ENABLED() in both places, thus in particular making sure XENPF_get_dom0_console handling doesn't take the "default" path: The behavior better wouldn't differ between VIDEO=3Dy and there not being VGA vs VIDEO=3Dn. For this to work, fill_console_start_info() needs to be unconditionally declared; extend that to vga_console_info as well. Signed-off-by: Jan Beulich Reviewed-by: Andrew Cooper --- I'm not quite certain whether to have Fixes: 11b4ff64841e ("x86/platform: protect XENPF_get_dom0_console if CONFIG_VIDEO not set") here. Opinions? --- a/xen/arch/x86/platform_hypercall.c +++ b/xen/arch/x86/platform_hypercall.c @@ -415,10 +415,9 @@ ret_t do_platform_op( } case XEN_FW_VBEDDC_INFO: ret =3D -ESRCH; -#ifdef CONFIG_VIDEO - if ( op->u.firmware_info.index !=3D 0 ) - break; - if ( *(u32 *)bootsym(boot_edid_info) =3D=3D 0x13131313 ) + if ( !IS_ENABLED(CONFIG_VIDEO) || + op->u.firmware_info.index !=3D 0 || + *(uint32_t *)bootsym(boot_edid_info) =3D=3D 0x13131313 ) break; =20 op->u.firmware_info.u.vbeddc_info.capabilities =3D @@ -434,7 +433,6 @@ ret_t do_platform_op( copy_to_compat(op->u.firmware_info.u.vbeddc_info.edid, bootsym(boot_edid_info), 128) ) ret =3D -EFAULT; -#endif break; case XEN_FW_EFI_INFO: ret =3D efi_get_info(op->u.firmware_info.index, @@ -905,20 +903,19 @@ ret_t do_platform_op( break; } =20 -#ifdef CONFIG_VIDEO case XENPF_get_dom0_console: BUILD_BUG_ON(sizeof(op->u.dom0_console) > sizeof(op->u.pad)); - ret =3D sizeof(op->u.dom0_console); - if ( !fill_console_start_info(&op->u.dom0_console) ) - { - ret =3D -ENODEV; + + ret =3D -ENODEV; + if ( !IS_ENABLED(CONFIG_VIDEO) || + !fill_console_start_info(&op->u.dom0_console) ) break; - } + + ret =3D sizeof(op->u.dom0_console); =20 if ( copy_field_to_guest(u_xenpf_op, op, u.dom0_console) ) ret =3D -EFAULT; break; -#endif =20 default: ret =3D -ENOSYS; --- a/xen/include/xen/vga.h +++ b/xen/include/xen/vga.h @@ -11,9 +11,10 @@ =20 #include =20 -#ifdef CONFIG_VGA extern struct xen_vga_console_info vga_console_info; int fill_console_start_info(struct dom0_vga_console_info *ci); + +#ifdef CONFIG_VGA void vesa_init(void); void vesa_early_init(void); void vesa_endboot(bool keep);