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To:     George Kennedy <george.kennedy@oracle.com>,
        Mike Rapoport <rppt@linux.ibm.com>
Cc:     Andrey Konovalov <andreyknvl@google.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        Catalin Marinas <catalin.marinas@arm.com>,
        Vincenzo Frascino <vincenzo.frascino@arm.com>,
        Dmitry Vyukov <dvyukov@google.com>,
        Konrad Rzeszutek Wilk <konrad@darnok.org>,
        Will Deacon <will.deacon@arm.com>,
        Andrey Ryabinin <aryabinin@virtuozzo.com>,
        Alexander Potapenko <glider@google.com>,
        Marco Elver <elver@google.com>,
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        Christoph Hellwig <hch@infradead.org>,
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        Linux ARM <linux-arm-kernel@lists.infradead.org>,
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        Dhaval Giani <dhaval.giani@oracle.com>
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From:   David Hildenbrand <david@redhat.com>
Organization: Red Hat GmbH
Subject: Re: [PATCH] mm, kasan: don't poison boot memory
Message-ID: <24e43280-1442-3c4e-aa57-ac84b987aa58@redhat.com>
Date:   Thu, 25 Feb 2021 18:23:24 +0100
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On 25.02.21 17:31, George Kennedy wrote:
> : rsdp_address=bfbfa014
> [    0.066612] ACPI: RSDP 0x00000000BFBFA014 000024 (v02 BOCHS )
> [    0.067759] ACPI: XSDT 0x00000000BFBF90E8 00004C (v01 BOCHS BXPCFACP
> 00000001      01000013)
> [    0.069470] ACPI: FACP 0x00000000BFBF5000 000074 (v01 BOCHS BXPCFACP
> 00000001 BXPC 00000001)
> [    0.071183] ACPI: DSDT 0x00000000BFBF6000 00238D (v01 BOCHS BXPCDSDT
> 00000001 BXPC 00000001)
> [    0.072876] ACPI: FACS 0x00000000BFBFD000 000040
> [    0.073806] ACPI: APIC 0x00000000BFBF4000 000090 (v01 BOCHS BXPCAPIC
> 00000001 BXPC 00000001)
> [    0.075501] ACPI: HPET 0x00000000BFBF3000 000038 (v01 BOCHS BXPCHPET
> 00000001 BXPC 00000001)
> [    0.077194] ACPI: BGRT 0x00000000BE49B000 000038 (v01 INTEL EDK2
> 00000002      01000013)
> [    0.078880] ACPI: iBFT 0x00000000BE453000 000800 (v01 BOCHS BXPCFACP
> 00000000      00000000)


Can you explore the relevant area using the page-flags tools (located in 
Linux src code located in tools/vm/page-flags.c)


./page-types -L -r -a 0xbe490,0xbe4a0

-- 
Thanks,

David / dhildenb