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Date:   Wed, 01 Jul 2020 09:17:41 -0500
From:   steve.wahl@hpe.com
To:     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>,
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        Andy Shevchenko <andy@infradead.org>,
        Mauro Carvalho Chehab <mchehab+huawei@kernel.org>,
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        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
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        Mike Kravetz <mike.kravetz@oracle.com>,
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        Mike Travis <mike.travis@hpe.com>,
        Steve Wahl <steve.wahl@hpe.com>,
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        linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-efi@vger.kernel.org
Cc:     Russ Anderson <rja@hpe.com>
Subject: [patch 10/13] Delete SGI UV1 detection.
References: <20200701141731.377252388@hpe.com>
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Sender: linux-kernel-owner@vger.kernel.org
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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>
---
 arch/x86/platform/efi/quirks.c |   23 -----------------------
 1 file changed, 23 deletions(-)

--- linux.orig/arch/x86/platform/efi/quirks.c	2020-06-17 14:29:45.510015978 -0500
+++ linux/arch/x86/platform/efi/quirks.c	2020-06-17 14:36:34.473414139 -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;