From: Andrey Konovalov <andreyknvl@google.com>
To: Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will.deacon@arm.com>,
Mark Rutland <mark.rutland@arm.com>,
Robin Murphy <robin.murphy@arm.com>,
Kees Cook <keescook@chromium.org>,
Kate Stewart <kstewart@linuxfoundation.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Andrew Morton <akpm@linux-foundation.org>,
Ingo Molnar <mingo@kernel.org>,
"Kirill A . Shutemov" <kirill.shutemov@linux.intel.com>,
Shuah Khan <shuah@kernel.org>,
linux-arm-kernel@lists.infradead.org, linux-doc@vger.kernel.org,
linux-mm@kvack.org, linux-arch@vger.kernel.org,
linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: Dmitry Vyukov <dvyukov@google.com>,
Kostya Serebryany <kcc@google.com>,
Evgeniy Stepanov <eugenis@google.com>,
Lee Smith <Lee.Smith@arm.com>,
Ramana Radhakrishnan <Ramana.Radhakrishnan@arm.com>,
Jacob Bramley <Jacob.Bramley@arm.com>,
Ruben Ayrapetyan <Ruben.Ayrapetyan@arm.com>,
Chintan Pandya <cpandya@codeaurora.org>,
Luc Van Oostenryck <luc.vanoostenryck@gmail.com>,
Andrey Konovalov <andreyknvl@google.com>
Subject: [PATCH v7 2/8] uaccess: add untagged_addr definition for other arches
Date: Tue, 2 Oct 2018 15:12:37 +0200 [thread overview]
Message-ID: <1ff6af9a9ab1f716d0ecbfcfe6788a02e21b7480.1538485901.git.andreyknvl@google.com> (raw)
In-Reply-To: <cover.1538485901.git.andreyknvl@google.com>
To allow arm64 syscalls accept tagged pointers from userspace, we must
untag them when they are passed to the kernel. Since untagging is done in
generic parts of the kernel, the untagged_addr macro needs to be defined
for all architectures.
Define it as a noop for other architectures besides arm64.
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
---
include/linux/uaccess.h | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/include/linux/uaccess.h b/include/linux/uaccess.h
index efe79c1cdd47..c045b4eff95e 100644
--- a/include/linux/uaccess.h
+++ b/include/linux/uaccess.h
@@ -13,6 +13,10 @@
#include <asm/uaccess.h>
+#ifndef untagged_addr
+#define untagged_addr(addr) addr
+#endif
+
/*
* Architectures should provide two primitives (raw_copy_{to,from}_user())
* and get rid of their private instances of copy_{to,from}_user() and
--
2.19.0.605.g01d371f741-goog
WARNING: multiple messages have this Message-ID (diff)
From: andreyknvl at google.com (Andrey Konovalov)
Subject: [PATCH v7 2/8] uaccess: add untagged_addr definition for other arches
Date: Tue, 2 Oct 2018 15:12:37 +0200 [thread overview]
Message-ID: <1ff6af9a9ab1f716d0ecbfcfe6788a02e21b7480.1538485901.git.andreyknvl@google.com> (raw)
In-Reply-To: <cover.1538485901.git.andreyknvl@google.com>
To allow arm64 syscalls accept tagged pointers from userspace, we must
untag them when they are passed to the kernel. Since untagging is done in
generic parts of the kernel, the untagged_addr macro needs to be defined
for all architectures.
Define it as a noop for other architectures besides arm64.
Signed-off-by: Andrey Konovalov <andreyknvl at google.com>
---
include/linux/uaccess.h | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/include/linux/uaccess.h b/include/linux/uaccess.h
index efe79c1cdd47..c045b4eff95e 100644
--- a/include/linux/uaccess.h
+++ b/include/linux/uaccess.h
@@ -13,6 +13,10 @@
#include <asm/uaccess.h>
+#ifndef untagged_addr
+#define untagged_addr(addr) addr
+#endif
+
/*
* Architectures should provide two primitives (raw_copy_{to,from}_user())
* and get rid of their private instances of copy_{to,from}_user() and
--
2.19.0.605.g01d371f741-goog
WARNING: multiple messages have this Message-ID (diff)
From: andreyknvl@google.com (Andrey Konovalov)
Subject: [PATCH v7 2/8] uaccess: add untagged_addr definition for other arches
Date: Tue, 2 Oct 2018 15:12:37 +0200 [thread overview]
Message-ID: <1ff6af9a9ab1f716d0ecbfcfe6788a02e21b7480.1538485901.git.andreyknvl@google.com> (raw)
Message-ID: <20181002131237.yJmqmGMl5AJ__9Yv_BVsjLRnPE0A0IfuUmLDdPaZ-_0@z> (raw)
In-Reply-To: <cover.1538485901.git.andreyknvl@google.com>
To allow arm64 syscalls accept tagged pointers from userspace, we must
untag them when they are passed to the kernel. Since untagging is done in
generic parts of the kernel, the untagged_addr macro needs to be defined
for all architectures.
Define it as a noop for other architectures besides arm64.
Signed-off-by: Andrey Konovalov <andreyknvl at google.com>
---
include/linux/uaccess.h | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/include/linux/uaccess.h b/include/linux/uaccess.h
index efe79c1cdd47..c045b4eff95e 100644
--- a/include/linux/uaccess.h
+++ b/include/linux/uaccess.h
@@ -13,6 +13,10 @@
#include <asm/uaccess.h>
+#ifndef untagged_addr
+#define untagged_addr(addr) addr
+#endif
+
/*
* Architectures should provide two primitives (raw_copy_{to,from}_user())
* and get rid of their private instances of copy_{to,from}_user() and
--
2.19.0.605.g01d371f741-goog
WARNING: multiple messages have this Message-ID (diff)
From: andreyknvl@google.com (Andrey Konovalov)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v7 2/8] uaccess: add untagged_addr definition for other arches
Date: Tue, 2 Oct 2018 15:12:37 +0200 [thread overview]
Message-ID: <1ff6af9a9ab1f716d0ecbfcfe6788a02e21b7480.1538485901.git.andreyknvl@google.com> (raw)
In-Reply-To: <cover.1538485901.git.andreyknvl@google.com>
To allow arm64 syscalls accept tagged pointers from userspace, we must
untag them when they are passed to the kernel. Since untagging is done in
generic parts of the kernel, the untagged_addr macro needs to be defined
for all architectures.
Define it as a noop for other architectures besides arm64.
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
---
include/linux/uaccess.h | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/include/linux/uaccess.h b/include/linux/uaccess.h
index efe79c1cdd47..c045b4eff95e 100644
--- a/include/linux/uaccess.h
+++ b/include/linux/uaccess.h
@@ -13,6 +13,10 @@
#include <asm/uaccess.h>
+#ifndef untagged_addr
+#define untagged_addr(addr) addr
+#endif
+
/*
* Architectures should provide two primitives (raw_copy_{to,from}_user())
* and get rid of their private instances of copy_{to,from}_user() and
--
2.19.0.605.g01d371f741-goog
next prev parent reply other threads:[~2018-10-02 13:12 UTC|newest]
Thread overview: 86+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-02 13:12 [PATCH v7 0/8] arm64: untag user pointers passed to the kernel Andrey Konovalov
2018-10-02 13:12 ` Andrey Konovalov
2018-10-02 13:12 ` Andrey Konovalov
2018-10-02 13:12 ` andreyknvl
2018-10-02 13:12 ` [PATCH v7 1/8] arm64: add type casts to untagged_addr macro Andrey Konovalov
2018-10-02 13:12 ` Andrey Konovalov
2018-10-02 13:12 ` Andrey Konovalov
2018-10-02 13:12 ` andreyknvl
2018-10-02 13:12 ` Andrey Konovalov [this message]
2018-10-02 13:12 ` [PATCH v7 2/8] uaccess: add untagged_addr definition for other arches Andrey Konovalov
2018-10-02 13:12 ` Andrey Konovalov
2018-10-02 13:12 ` andreyknvl
2018-10-02 13:12 ` [PATCH v7 3/8] arm64: untag user addresses in access_ok and __uaccess_mask_ptr Andrey Konovalov
2018-10-02 13:12 ` Andrey Konovalov
2018-10-02 13:12 ` Andrey Konovalov
2018-10-02 13:12 ` andreyknvl
2018-10-02 13:12 ` [PATCH v7 4/8] mm, arm64: untag user addresses in mm/gup.c Andrey Konovalov
2018-10-02 13:12 ` Andrey Konovalov
2018-10-02 13:12 ` Andrey Konovalov
2018-10-02 13:12 ` andreyknvl
2018-10-02 13:12 ` [PATCH v7 5/8] lib, arm64: untag addrs passed to strncpy_from_user and strnlen_user Andrey Konovalov
2018-10-02 13:12 ` Andrey Konovalov
2018-10-02 13:12 ` Andrey Konovalov
2018-10-02 13:12 ` andreyknvl
2018-10-02 13:12 ` [PATCH v7 6/8] fs, arm64: untag user address in copy_mount_options Andrey Konovalov
2018-10-02 13:12 ` Andrey Konovalov
2018-10-02 13:12 ` Andrey Konovalov
2018-10-02 13:12 ` andreyknvl
2018-10-02 13:12 ` [PATCH v7 7/8] arm64: update Documentation/arm64/tagged-pointers.txt Andrey Konovalov
2018-10-02 13:12 ` Andrey Konovalov
2018-10-02 13:12 ` Andrey Konovalov
2018-10-02 13:12 ` andreyknvl
2018-10-03 17:32 ` Catalin Marinas
2018-10-03 17:32 ` Catalin Marinas
2018-10-03 17:32 ` Catalin Marinas
2018-10-03 17:32 ` Catalin Marinas
2018-10-03 17:32 ` catalin.marinas
2018-10-10 14:09 ` Andrey Konovalov
2018-10-10 14:09 ` Andrey Konovalov
2018-10-10 14:09 ` Andrey Konovalov
2018-10-10 14:09 ` Andrey Konovalov
2018-10-10 14:09 ` Andrey Konovalov
2018-10-10 14:09 ` andreyknvl
2018-10-18 17:31 ` Catalin Marinas
2018-10-18 17:31 ` Catalin Marinas
2018-10-18 17:31 ` Catalin Marinas
2018-10-18 17:31 ` Catalin Marinas
2018-10-18 17:31 ` Catalin Marinas
2018-10-18 17:31 ` catalin.marinas
2018-10-02 13:12 ` [PATCH v7 8/8] selftests, arm64: add a selftest for passing tagged pointers to kernel Andrey Konovalov
2018-10-02 13:12 ` Andrey Konovalov
2018-10-02 13:12 ` Andrey Konovalov
2018-10-02 13:12 ` andreyknvl
2018-10-03 13:31 ` [PATCH v7 0/8] arm64: untag user pointers passed to the kernel Luc Van Oostenryck
2018-10-03 13:31 ` Luc Van Oostenryck
2018-10-03 13:31 ` Luc Van Oostenryck
2018-10-03 13:31 ` Luc Van Oostenryck
2018-10-03 13:31 ` luc.vanoostenryck
2018-10-17 14:06 ` Vincenzo Frascino
2018-10-17 14:06 ` Vincenzo Frascino
2018-10-17 14:06 ` Vincenzo Frascino
2018-10-17 14:06 ` vincenzo.frascino
2018-10-17 14:20 ` Andrey Konovalov
2018-10-17 14:20 ` Andrey Konovalov
2018-10-17 14:20 ` Andrey Konovalov
2018-10-17 14:20 ` Andrey Konovalov
2018-10-17 14:20 ` Andrey Konovalov
2018-10-17 14:20 ` andreyknvl
2018-10-17 20:25 ` Evgenii Stepanov
2018-10-17 20:25 ` Evgenii Stepanov
2018-10-17 20:25 ` Evgenii Stepanov
2018-10-17 20:25 ` Evgenii Stepanov
2018-10-17 20:25 ` Evgenii Stepanov
2018-10-17 20:25 ` eugenis
2018-10-18 17:33 ` Catalin Marinas
2018-10-18 17:33 ` Catalin Marinas
2018-10-18 17:33 ` Catalin Marinas
2018-10-18 17:33 ` Catalin Marinas
2018-10-18 17:33 ` Catalin Marinas
2018-10-18 17:33 ` catalin.marinas
2018-10-19 9:04 ` Vincenzo Frascino
2018-10-19 9:04 ` Vincenzo Frascino
2018-10-19 9:04 ` Vincenzo Frascino
2018-10-19 9:04 ` Vincenzo Frascino
2018-10-19 9:04 ` Vincenzo Frascino
2018-10-19 9:04 ` vincenzo.frascino
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