From: Ryan Roberts <ryan.roberts@arm.com>
To: Ard Biesheuvel <ardb@kernel.org>, linux-kernel@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>, Marc Zyngier <maz@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Anshuman Khandual <anshuman.khandual@arm.com>,
Kees Cook <keescook@chromium.org>
Subject: Re: [PATCH v3 06/60] arm64: ptdump: Allow VMALLOC_END to be defined at boot
Date: Tue, 7 Mar 2023 16:58:48 +0000 [thread overview]
Message-ID: <448139c7-bef0-3ddc-388c-db793a37d55e@arm.com> (raw)
In-Reply-To: <20230307140522.2311461-7-ardb@kernel.org>
On 07/03/2023 14:04, Ard Biesheuvel wrote:
> Extend the existing pattern for populating ptdump marker entries at
> boot, and add handling of VMALLOC_END, which will cease to be a compile
> time constant for configurations that support 52-bit virtual addressing.
>
> Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
> ---
> arch/arm64/mm/ptdump.c | 8 +++++++-
> 1 file changed, 7 insertions(+), 1 deletion(-)
>
> diff --git a/arch/arm64/mm/ptdump.c b/arch/arm64/mm/ptdump.c
> index 76d28056bd14920a..910b35f02280cbdb 100644
> --- a/arch/arm64/mm/ptdump.c
> +++ b/arch/arm64/mm/ptdump.c
> @@ -31,7 +31,12 @@ enum address_markers_idx {
> PAGE_END_NR,
> #if defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS)
> KASAN_START_NR,
> + KASAN_END_NR,
> #endif
> + MODULES_NR,
> + MODULES_END_NR,
> + VMALLOC_START_NR,
> + VMALLOC_END_NR,
> };
>
> static struct addr_marker address_markers[] = {
> @@ -44,7 +49,7 @@ static struct addr_marker address_markers[] = {
> { MODULES_VADDR, "Modules start" },
> { MODULES_END, "Modules end" },
> { VMALLOC_START, "vmalloc() area" },
> - { VMALLOC_END, "vmalloc() end" },
> + { 0, "vmalloc() end" },
> { VMEMMAP_START, "vmemmap start" },
> { VMEMMAP_START + VMEMMAP_SIZE, "vmemmap end" },
> { PCI_IO_START, "PCI I/O start" },
With all the VA layout changes, and the addition of 52-bit PA/VA for 4KB and
16KB pages, Documentation/arm64/memory.rst now looks very wrong. Suggest
updating it to reflect reality?
> @@ -379,6 +384,7 @@ static int __init ptdump_init(void)
> #if defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS)
> address_markers[KASAN_START_NR].start_address = KASAN_SHADOW_START;
> #endif
> + address_markers[VMALLOC_END_NR].start_address = VMALLOC_END;
> ptdump_initialize();
> ptdump_debugfs_register(&kernel_ptdump_info, "kernel_page_tables");
> return 0;
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next prev parent reply other threads:[~2023-03-07 16:59 UTC|newest]
Thread overview: 92+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-07 14:04 [PATCH v3 00/60] arm64: Add support for LPA2 at stage1 and WXN Ard Biesheuvel
2023-03-07 14:04 ` [PATCH v3 01/60] arm64: kernel: Disable latent_entropy GCC plugin in early C runtime Ard Biesheuvel
2023-04-28 10:37 ` Mark Rutland
2023-04-28 10:54 ` Ard Biesheuvel
2023-04-28 11:48 ` Mark Rutland
2023-03-07 14:04 ` [PATCH v3 02/60] arm64: mm: Take potential load offset into account when KASLR is off Ard Biesheuvel
2023-04-28 10:41 ` Mark Rutland
2023-03-07 14:04 ` [PATCH v3 03/60] arm64: mm: get rid of kimage_vaddr global variable Ard Biesheuvel
2023-04-28 10:42 ` Mark Rutland
2023-03-07 14:04 ` [PATCH v3 04/60] arm64: mm: Move PCI I/O emulation region above the vmemmap region Ard Biesheuvel
2023-03-07 14:04 ` [PATCH v3 05/60] arm64: mm: Move fixmap region above " Ard Biesheuvel
2023-04-28 11:00 ` Mark Rutland
2023-03-07 14:04 ` [PATCH v3 06/60] arm64: ptdump: Allow VMALLOC_END to be defined at boot Ard Biesheuvel
2023-03-07 16:58 ` Ryan Roberts [this message]
2023-03-07 17:01 ` Ard Biesheuvel
2023-04-28 11:25 ` Mark Rutland
2023-03-07 14:04 ` [PATCH v3 07/60] arm64: ptdump: Discover start of vmemmap region at runtime Ard Biesheuvel
2023-03-07 16:36 ` Ryan Roberts
2023-04-28 11:27 ` Mark Rutland
2023-03-07 14:04 ` [PATCH v3 08/60] arm64: vmemmap: Avoid base2 order of struct page size to dimension region Ard Biesheuvel
2023-03-07 14:04 ` [PATCH v3 09/60] arm64: mm: Reclaim unused vmemmap region for vmalloc use Ard Biesheuvel
2023-03-07 16:42 ` Ryan Roberts
2023-03-07 16:58 ` Ard Biesheuvel
2023-03-07 14:04 ` [PATCH v3 10/60] arm64: kaslr: Adjust randomization range dynamically Ard Biesheuvel
2023-03-07 14:04 ` [PATCH v3 11/60] arm64: kaslr: drop special case for ThunderX in kaslr_requires_kpti() Ard Biesheuvel
2023-03-07 14:04 ` [PATCH v3 12/60] arm64: Turn kaslr_feature_override into a generic SW feature override Ard Biesheuvel
2023-03-07 14:04 ` [PATCH v3 13/60] arm64: kvm: honour 'nokaslr' command line option for the HYP VA space Ard Biesheuvel
2023-03-07 14:04 ` [PATCH v3 14/60] arm64: kernel: Manage absolute relocations in code built under pi/ Ard Biesheuvel
2023-03-07 14:04 ` [PATCH v3 15/60] arm64: kernel: Don't rely on objcopy to make code under pi/ __init Ard Biesheuvel
2023-03-07 14:04 ` [PATCH v3 16/60] arm64: head: move relocation handling to C code Ard Biesheuvel
2023-03-07 14:04 ` [PATCH v3 17/60] arm64: idreg-override: Omit non-NULL checks for override pointer Ard Biesheuvel
2023-03-07 14:04 ` [PATCH v3 18/60] arm64: idreg-override: Prepare for place relative reloc patching Ard Biesheuvel
2023-03-07 14:04 ` [PATCH v3 19/60] arm64: idreg-override: Avoid parameq() and parameqn() Ard Biesheuvel
2023-03-07 14:04 ` [PATCH v3 20/60] arm64: idreg-override: avoid strlen() to check for empty strings Ard Biesheuvel
2023-03-07 14:04 ` [PATCH v3 21/60] arm64: idreg-override: Avoid sprintf() for simple string concatenation Ard Biesheuvel
2023-03-07 14:04 ` [PATCH v3 22/60] arm64: idreg-override: Avoid kstrtou64() to parse a single hex digit Ard Biesheuvel
2023-03-07 14:04 ` [PATCH v3 23/60] arm64: idreg-override: Move to early mini C runtime Ard Biesheuvel
2023-03-07 14:04 ` [PATCH v3 24/60] arm64: kernel: Remove early fdt remap code Ard Biesheuvel
2023-03-07 14:04 ` [PATCH v3 25/60] arm64: head: Clear BSS and the kernel page tables in one go Ard Biesheuvel
2023-04-17 14:00 ` Ryan Roberts
2023-04-17 14:02 ` Ard Biesheuvel
2023-04-17 14:09 ` Ryan Roberts
2023-03-07 14:04 ` [PATCH v3 26/60] arm64: Move feature overrides into the BSS section Ard Biesheuvel
2023-03-07 14:04 ` [PATCH v3 27/60] arm64: head: Run feature override detection before mapping the kernel Ard Biesheuvel
2023-03-07 14:04 ` [PATCH v3 28/60] arm64: head: move dynamic shadow call stack patching into early C runtime Ard Biesheuvel
2023-03-07 14:04 ` [PATCH v3 29/60] arm64: kaslr: Use feature override instead of parsing the cmdline again Ard Biesheuvel
2023-03-07 14:04 ` [PATCH v3 30/60] arm64: idreg-override: Create a pseudo feature for rodata=off Ard Biesheuvel
2023-04-17 14:28 ` Ryan Roberts
2023-04-17 14:30 ` Ard Biesheuvel
2023-04-17 14:33 ` Ryan Roberts
2023-03-07 14:04 ` [PATCH v3 31/60] arm64: Add helpers to probe local CPU for PAC/BTI/E0PD support Ard Biesheuvel
2023-03-07 14:04 ` [PATCH v3 32/60] arm64: head: allocate more pages for the kernel mapping Ard Biesheuvel
2023-04-17 15:48 ` Ryan Roberts
2023-04-17 16:11 ` Ard Biesheuvel
2023-04-17 16:18 ` Ryan Roberts
2023-03-07 14:04 ` [PATCH v3 33/60] arm64: head: move memstart_offset_seed handling to C code Ard Biesheuvel
2023-03-07 14:04 ` [PATCH v3 34/60] arm64: head: Move early kernel mapping routines into " Ard Biesheuvel
2023-04-18 9:31 ` Ryan Roberts
2023-04-18 10:06 ` Ard Biesheuvel
2023-03-07 14:04 ` [PATCH v3 35/60] arm64: mm: Use 48-bit virtual addressing for the permanent ID map Ard Biesheuvel
2023-04-18 10:22 ` Ryan Roberts
2023-03-07 14:04 ` [PATCH v3 36/60] arm64: pgtable: Decouple PGDIR size macros from PGD/PUD/PMD levels Ard Biesheuvel
2023-03-07 14:04 ` [PATCH v3 37/60] arm64: kernel: Create initial ID map from C code Ard Biesheuvel
2023-03-07 14:05 ` [PATCH v3 38/60] arm64: mm: avoid fixmap for early swapper_pg_dir updates Ard Biesheuvel
2023-03-07 14:05 ` [PATCH v3 39/60] arm64: mm: omit redundant remap of kernel image Ard Biesheuvel
2023-03-07 14:05 ` [PATCH v3 40/60] arm64: Revert "mm: provide idmap pointer to cpu_replace_ttbr1()" Ard Biesheuvel
2023-03-07 14:05 ` [PATCH v3 41/60] arm64/mm: Add FEAT_LPA2 specific TCR_EL1.DS field Ard Biesheuvel
2023-03-07 14:05 ` [PATCH v3 42/60] arm64/mm: Add FEAT_LPA2 specific ID_AA64MMFR0.TGRAN[2] Ard Biesheuvel
2023-03-07 14:05 ` [PATCH v3 43/60] arm64: mm: Handle LVA support as a CPU feature Ard Biesheuvel
2023-03-07 14:05 ` [PATCH v3 44/60] arm64: mm: Add feature override support for LVA Ard Biesheuvel
2023-03-07 14:05 ` [PATCH v3 45/60] arm64: mm: Wire up TCR.DS bit to PTE shareability fields Ard Biesheuvel
2023-03-07 14:05 ` [PATCH v3 46/60] arm64: mm: Add LPA2 support to phys<->pte conversion routines Ard Biesheuvel
2023-03-07 14:05 ` [PATCH v3 47/60] arm64: mm: Add definitions to support 5 levels of paging Ard Biesheuvel
2023-03-07 14:05 ` [PATCH v3 48/60] arm64: mm: add LPA2 and 5 level paging support to G-to-nG conversion Ard Biesheuvel
2023-03-07 14:05 ` [PATCH v3 49/60] arm64: Enable LPA2 at boot if supported by the system Ard Biesheuvel
2023-04-18 13:50 ` Ryan Roberts
2023-03-07 14:05 ` [PATCH v3 50/60] arm64: mm: Add 5 level paging support to fixmap and swapper handling Ard Biesheuvel
2023-03-07 14:05 ` [PATCH v3 51/60] arm64: kasan: Reduce minimum shadow alignment and enable 5 level paging Ard Biesheuvel
2023-03-07 14:05 ` [PATCH v3 52/60] arm64: mm: Add support for folding PUDs at runtime Ard Biesheuvel
2023-03-07 14:05 ` [PATCH v3 53/60] arm64: ptdump: Disregard unaddressable VA space Ard Biesheuvel
2023-03-07 14:05 ` [PATCH v3 54/60] arm64: ptdump: Deal with translation levels folded at runtime Ard Biesheuvel
2023-03-07 14:05 ` [PATCH v3 55/60] arm64: kvm: avoid CONFIG_PGTABLE_LEVELS for runtime levels Ard Biesheuvel
2023-04-18 14:29 ` Ryan Roberts
2023-03-07 14:05 ` [PATCH v3 56/60] arm64: kvm: Limit HYP VA and host S2 range to 48 bits when LPA2 is in effect Ard Biesheuvel
2023-04-18 14:33 ` Ryan Roberts
2023-03-07 14:05 ` [PATCH v3 57/60] arm64: Enable 52-bit virtual addressing for 4k and 16k granule configs Ard Biesheuvel
2023-03-07 14:05 ` [PATCH v3 58/60] arm64: defconfig: Enable LPA2 support Ard Biesheuvel
2023-03-07 14:05 ` [PATCH v3 59/60] mm: add arch hook to validate mmap() prot flags Ard Biesheuvel
2023-03-07 14:05 ` [PATCH v3 60/60] arm64: mm: add support for WXN memory translation attribute Ard Biesheuvel
2023-03-07 16:28 ` [PATCH v3 00/60] arm64: Add support for LPA2 at stage1 and WXN Ryan Roberts
2023-03-08 8:31 ` Ard Biesheuvel
2023-04-18 15:01 ` Ryan Roberts
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