Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
Message-ID: <20200713212955.667726896@hpe.com>
User-Agent: quilt/0.66
Date:   Mon, 13 Jul 2020 16:30:04 -0500
From:   steve.wahl@hpe.com
To:     Steve Wahl <steve.wahl@hpe.com>, Jonathan Corbet <corbet@lwn.net>,
        Ard Biesheuvel <ardb@kernel.org>,
        Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
        x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>,
        Darren Hart <dvhart@infradead.org>,
        Andy Shevchenko <andy@infradead.org>,
        Mauro Carvalho Chehab <mchehab+huawei@kernel.org>,
        Andrew Morton <akpm@linux-foundation.org>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        "Paul E. McKenney" <paulmck@kernel.org>,
        Pawan Gupta <pawan.kumar.gupta@linux.intel.com>,
        Juergen Gross <jgross@suse.com>,
        Mike Kravetz <mike.kravetz@oracle.com>,
        Oliver Neukum <oneukum@suse.com>,
        Mike Travis <mike.travis@hpe.com>,
        Dimitri Sivanich <dimitri.sivanich@hpe.com>,
        Benjamin Thiel <b.thiel@posteo.de>,
        Andy Lutomirski <luto@kernel.org>,
        Arnd Bergmann <arnd@arndb.de>,
        James Morris <jmorris@namei.org>,
        David Howells <dhowells@redhat.com>,
        Kees Cook <keescook@chromium.org>,
        Dave Young <dyoung@redhat.com>,
        Dan Williams <dan.j.williams@intel.com>,
        Logan Gunthorpe <logang@deltatee.com>,
        Alexandre Chartre <alexandre.chartre@oracle.com>,
        "Peter Zijlstra (Intel)" <peterz@infradead.org>,
        Austin Kim <austindh.kim@gmail.com>,
        Alexey Dobriyan <adobriyan@gmail.com>,
        linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-efi@vger.kernel.org
Cc:     Russ Anderson <rja@hpe.com>
Subject: [patch v3 10/13] x86: Delete SGI UV1 detection.
References: <20200713212954.444086564@hpe.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

As a part of UV1 platform removal, don't try to recognize the platform
through DMI to set the EFI_UV1_MEMMAP bit.

Signed-off-by: Steve Wahl <steve.wahl@hpe.com>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
---
 arch/x86/platform/efi/quirks.c |   23 -----------------------
 1 file changed, 23 deletions(-)

--- linux.orig/arch/x86/platform/efi/quirks.c	2020-07-07 10:49:50.017510679 -0500
+++ linux/arch/x86/platform/efi/quirks.c	2020-07-07 10:56:15.209045740 -0500
@@ -558,16 +558,6 @@ out:
 	return ret;
 }
 
-static const struct dmi_system_id sgi_uv1_dmi[] __initconst = {
-	{ NULL, "SGI UV1",
-		{	DMI_MATCH(DMI_PRODUCT_NAME,	"Stoutland Platform"),
-			DMI_MATCH(DMI_PRODUCT_VERSION,	"1.0"),
-			DMI_MATCH(DMI_BIOS_VENDOR,	"SGI.COM"),
-		}
-	},
-	{ } /* NULL entry stops DMI scanning */
-};
-
 void __init efi_apply_memmap_quirks(void)
 {
 	/*
@@ -579,17 +569,6 @@ void __init efi_apply_memmap_quirks(void
 		pr_info("Setup done, disabling due to 32/64-bit mismatch\n");
 		efi_memmap_unmap();
 	}
-
-	/* UV2+ BIOS has a fix for this issue.  UV1 still needs the quirk. */
-	if (dmi_check_system(sgi_uv1_dmi)) {
-		if (IS_ENABLED(CONFIG_X86_UV)) {
-			set_bit(EFI_UV1_MEMMAP, &efi.flags);
-		} else {
-			pr_warn("EFI runtime disabled, needs CONFIG_X86_UV=y on UV1\n");
-			clear_bit(EFI_RUNTIME_SERVICES, &efi.flags);
-			efi_memmap_unmap();
-		}
-	}
 }
 
 /*
@@ -723,8 +702,6 @@ void efi_recover_from_page_fault(unsigne
 
 	/*
 	 * Make sure that an efi runtime service caused the page fault.
-	 * "efi_mm" cannot be used to check if the page fault had occurred
-	 * in the firmware context because the UV1 memmap doesn't use efi_pgd.
 	 */
 	if (efi_rts_work.efi_rts_id == EFI_NONE)
 		return;