All of lore.kernel.org
 help / color / mirror / Atom feed
From: Ard Biesheuvel <ard.biesheuvel@linaro.org>
To: linux-arm-kernel@lists.infradead.org, linux-efi@vger.kernel.org,
	catalin.marinas@arm.com, mark.rutland@arm.com,
	matt@codeblueprint.co.uk
Cc: leif.lindholm@linaro.org, Ard Biesheuvel <ard.biesheuvel@linaro.org>
Subject: [PATCH] efi: arm64: add debugfs node to dump UEFI runtime page tables
Date: Thu, 30 Jun 2016 12:01:46 +0200	[thread overview]
Message-ID: <1467280906-31158-1-git-send-email-ard.biesheuvel@linaro.org> (raw)

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>
---

This patch could be helpful in assessing the series 'arm64: avoid block
entries that we need to split later' that I sent out yesterday.

 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 17ccf0a8787a..4197a1da013d 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
+#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;
-- 
2.7.4

WARNING: multiple messages have this Message-ID (diff)
From: ard.biesheuvel@linaro.org (Ard Biesheuvel)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] efi: arm64: add debugfs node to dump UEFI runtime page tables
Date: Thu, 30 Jun 2016 12:01:46 +0200	[thread overview]
Message-ID: <1467280906-31158-1-git-send-email-ard.biesheuvel@linaro.org> (raw)

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>
---

This patch could be helpful in assessing the series 'arm64: avoid block
entries that we need to split later' that I sent out yesterday.

 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 17ccf0a8787a..4197a1da013d 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
+#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;
-- 
2.7.4

             reply	other threads:[~2016-06-30 10:01 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-06-30 10:01 Ard Biesheuvel [this message]
2016-06-30 10:01 ` [PATCH] efi: arm64: add debugfs node to dump UEFI runtime page tables Ard Biesheuvel
     [not found] ` <1467280906-31158-1-git-send-email-ard.biesheuvel-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2016-06-30 14:09   ` Mark Rutland
2016-06-30 14:09     ` Mark Rutland
2016-07-01 13:18     ` Ard Biesheuvel
2016-07-01 13:18       ` Ard Biesheuvel

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1467280906-31158-1-git-send-email-ard.biesheuvel@linaro.org \
    --to=ard.biesheuvel@linaro.org \
    --cc=catalin.marinas@arm.com \
    --cc=leif.lindholm@linaro.org \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-efi@vger.kernel.org \
    --cc=mark.rutland@arm.com \
    --cc=matt@codeblueprint.co.uk \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.