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From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org, Lucas De Marchi <lucas.demarchi@intel.com>,
        Rodrigo Vivi <rodrigo.vivi@intel.com>,
        Anusha Srivatsa <anusha.srivatsa@intel.com>,
        Jani Nikula <jani.nikula@linux.intel.com>,
        Joonas Lahtinen <joonas.lahtinen@linux.intel.com>,
        David Airlie <airlied@linux.ie>,
        intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org,
        Ingo Molnar <mingo@kernel.org>,
        "H. Peter Anvin" <hpa@zytor.com>,
        Thomas Gleixner <tglx@linutronix.de>, x86@kernel.org,
        Jani Nikula <jani.nikula@intel.com>
Subject: [PATCH 4.15 035/163] x86/gpu: add CFL to early quirks
Date:   Wed, 21 Feb 2018 13:47:44 +0100
Message-Id: <20180221124532.202910761@linuxfoundation.org>
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4.15-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Lucas De Marchi <lucas.demarchi@intel.com>

commit 33aa69ed8aacd92dea12671e52eb3ca6ac2d7a49 upstream.

CFL was missing from intel_early_ids[]. The PCI ID needs to be there to
allow the memory region to be stolen, otherwise we could have RAM being
arbitrarily overwritten if for example we keep using the UEFI framebuffer,
depending on how BIOS has set up the e820 map.

Fixes: b056f8f3d6b9 ("drm/i915/cfl: Add Coffee Lake PCI IDs for S Skus.")
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Anusha Srivatsa <anusha.srivatsa@intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: David Airlie <airlied@linux.ie>
Cc: intel-gfx@lists.freedesktop.org
Cc: dri-devel@lists.freedesktop.org
Cc: Ingo Molnar <mingo@kernel.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: x86@kernel.org
Cc: <stable@vger.kernel.org> # v4.13+ 0890540e21cf drm/i915: add GT number to intel_device_info
Cc: <stable@vger.kernel.org> # v4.13+ 41693fd52373 drm/i915/kbl: Change a KBL pci id to GT2 from GT1.5
Cc: <stable@vger.kernel.org> # v4.13+
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171213200425.2954-1-lucas.demarchi@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 arch/x86/kernel/early-quirks.c |    1 +
 include/drm/i915_pciids.h      |    6 ++++++
 2 files changed, 7 insertions(+)

--- a/arch/x86/kernel/early-quirks.c
+++ b/arch/x86/kernel/early-quirks.c
@@ -527,6 +527,7 @@ static const struct pci_device_id intel_
 	INTEL_SKL_IDS(&gen9_early_ops),
 	INTEL_BXT_IDS(&gen9_early_ops),
 	INTEL_KBL_IDS(&gen9_early_ops),
+	INTEL_CFL_IDS(&gen9_early_ops),
 	INTEL_GLK_IDS(&gen9_early_ops),
 	INTEL_CNL_IDS(&gen9_early_ops),
 };
--- a/include/drm/i915_pciids.h
+++ b/include/drm/i915_pciids.h
@@ -392,6 +392,12 @@
 	INTEL_VGA_DEVICE(0x3EA8, info), /* ULT GT3 */ \
 	INTEL_VGA_DEVICE(0x3EA5, info)  /* ULT GT3 */
 
+#define INTEL_CFL_IDS(info) \
+	INTEL_CFL_S_GT1_IDS(info), \
+	INTEL_CFL_S_GT2_IDS(info), \
+	INTEL_CFL_H_GT2_IDS(info), \
+	INTEL_CFL_U_GT3_IDS(info)
+
 /* CNL U 2+2 */
 #define INTEL_CNL_U_GT2_IDS(info) \
 	INTEL_VGA_DEVICE(0x5A52, info), \