From: Matt Fleming <matt@codeblueprint.co.uk>
To: Ingo Molnar <mingo@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
"H . Peter Anvin" <hpa@zytor.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>,
linux-kernel@vger.kernel.org, linux-efi@vger.kernel.org,
Matt Fleming <matt@codeblueprint.co.uk>,
Leif Lindholm <leif.lindholm@linaro.org>,
Mark Rutland <mark.rutland@arm.com>
Subject: [PATCH 23/29] efi/arm64: Add debugfs node to dump UEFI runtime page tables
Date: Fri, 9 Sep 2016 16:18:45 +0100 [thread overview]
Message-ID: <20160909151851.27577-24-matt@codeblueprint.co.uk> (raw)
In-Reply-To: <20160909151851.27577-1-matt@codeblueprint.co.uk>
From: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Register the debugfs node 'efi_page_tables' to allow the UEFI runtime
page tables to be inspected. Note that ARM does not have 'asm/ptdump.h'
[yet] so for now, this is arm64 only.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Cc: Leif Lindholm <leif.lindholm@linaro.org>
Signed-off-by: Matt Fleming <matt@codeblueprint.co.uk>
---
drivers/firmware/efi/arm-runtime.c | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/drivers/firmware/efi/arm-runtime.c b/drivers/firmware/efi/arm-runtime.c
index ae001450545f..7c75a8d9091a 100644
--- a/drivers/firmware/efi/arm-runtime.c
+++ b/drivers/firmware/efi/arm-runtime.c
@@ -39,6 +39,26 @@ static struct mm_struct efi_mm = {
.mmlist = LIST_HEAD_INIT(efi_mm.mmlist),
};
+#ifdef CONFIG_ARM64_PTDUMP
+#include <asm/ptdump.h>
+
+static struct ptdump_info efi_ptdump_info = {
+ .mm = &efi_mm,
+ .markers = (struct addr_marker[]){
+ { 0, "UEFI runtime start" },
+ { TASK_SIZE_64, "UEFI runtime end" }
+ },
+ .base_addr = 0,
+};
+
+static int __init ptdump_init(void)
+{
+ return ptdump_register(&efi_ptdump_info, "efi_page_tables");
+}
+device_initcall(ptdump_init);
+
+#endif
+
static bool __init efi_virtmap_init(void)
{
efi_memory_desc_t *md;
--
2.9.3
next prev parent reply other threads:[~2016-09-09 15:18 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-09 15:18 [GIT PULL 00/29] EFI changes for v4.9 Matt Fleming
2016-09-09 15:18 ` [PATCH 01/29] x86/efi: Test for EFI_MEMMAP functionality when iterating EFI memmap Matt Fleming
2016-09-09 15:18 ` [PATCH 03/29] efi: Refactor efi_memmap_init_early() into arch-neutral code Matt Fleming
2016-09-09 15:18 ` [PATCH 05/29] efi/fake_mem: Refactor main two code chunks into functions Matt Fleming
2016-09-09 15:18 ` [PATCH 06/29] efi: Split out EFI memory map functions into new file Matt Fleming
2016-09-09 15:18 ` [PATCH 08/29] efi: Allow drivers to reserve boot services forever Matt Fleming
2017-01-04 2:48 ` Dan Williams
[not found] ` <CAA9_cmffnH0CH+3DaUW3ytVnRWbZCHa1VcAfWgwMCfbncN_QcA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2017-01-04 5:28 ` Dave Young
2017-01-04 14:25 ` Peter Jones
2017-01-04 17:45 ` Nicolai Stange
2017-01-04 18:40 ` Dan Williams
2016-09-09 15:18 ` [PATCH 09/29] efi/runtime-map: Use efi.memmap directly instead of a copy Matt Fleming
[not found] ` <20160909151851.27577-1-matt-mF/unelCI9GS6iBeEJttW/XRex20P6io@public.gmane.org>
2016-09-09 15:18 ` [PATCH 02/29] x86/efi: Consolidate region mapping logic Matt Fleming
2016-09-09 15:18 ` [PATCH 04/29] efi: Add efi_memmap_init_late() for permanent EFI memmap Matt Fleming
2016-09-09 15:18 ` [PATCH 07/29] efi: Add efi_memmap_install() for installing new EFI memory maps Matt Fleming
2016-09-09 15:18 ` [PATCH 10/29] efi/esrt: Use efi_mem_reserve() and avoid a kmalloc() Matt Fleming
2016-09-09 15:18 ` [PATCH 12/29] efi/esrt: Use memremap not ioremap to access ESRT table in memory Matt Fleming
2016-09-09 15:18 ` [PATCH 13/29] efi/arm*: esrt: Add missing call to efi_esrt_init() Matt Fleming
2016-09-09 15:18 ` [PATCH 15/29] efi: Don't use spinlocks for efi vars Matt Fleming
2016-09-09 15:18 ` [PATCH 18/29] firmware-gsmi: Delete an unnecessary check before the function call "dma_pool_destroy" Matt Fleming
2016-09-09 15:18 ` [PATCH 20/29] x86/efi: Map in physical addresses in efi_map_region_fixed Matt Fleming
2016-09-09 15:18 ` [PATCH 24/29] x86/efi: Defer efi_esrt_init until after memblock_x86_fill Matt Fleming
2016-09-09 15:18 ` [PATCH 26/29] efi/arm64: Treat regions with WT/WC set but WB cleared as memory Matt Fleming
2016-09-09 15:18 ` [PATCH 28/29] x86/efi: Optimize away setup_gop32/64 if unused Matt Fleming
2016-09-12 10:58 ` [GIT PULL 00/29] EFI changes for v4.9 Matt Fleming
[not found] ` <20160912105813.GC3872-mF/unelCI9GS6iBeEJttW/XRex20P6io@public.gmane.org>
2016-09-12 11:42 ` Ingo Molnar
2016-09-09 15:18 ` [PATCH 11/29] x86/efi-bgrt: Use efi_mem_reserve() to avoid copying image data Matt Fleming
2016-09-09 15:18 ` [PATCH 14/29] efi: Use a file local lock for efivars Matt Fleming
2016-09-09 15:18 ` [PATCH 16/29] efi: Replace runtime services spinlock with semaphore Matt Fleming
2016-09-09 15:18 ` [PATCH 17/29] x86/efi: Initialize status to ensure garbage is not returned on small size Matt Fleming
2016-09-09 15:18 ` [PATCH 19/29] lib/ucs2_string: Speed up ucs2_utf8size() Matt Fleming
2016-09-09 15:18 ` [PATCH 21/29] fs/efivarfs: Fix double kfree() in error path Matt Fleming
2016-09-09 15:18 ` [PATCH 22/29] x86/efi: Remove unused find_bits() function Matt Fleming
2016-09-09 15:18 ` Matt Fleming [this message]
2016-09-09 15:18 ` [PATCH 25/29] efi: Add efi_test driver for exporting UEFI runtime service interfaces Matt Fleming
2016-09-09 15:18 ` [PATCH 27/29] x86/efi: Use kmalloc_array() in efi_call_phys_prolog() Matt Fleming
2016-09-09 15:18 ` [PATCH 29/29] x86/efi: Allow invocation of arbitrary boot services Matt Fleming
2016-09-13 18:32 ` [GIT PULL 00/29] EFI changes for v4.9 Ingo Molnar
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