From: "Christopher M. Riedl" <cmr@codefail.de>
To: linuxppc-dev@lists.ozlabs.org
Cc: Daniel Axtens <dja@axtens.net>
Subject: [PATCH v6 01/10] powerpc/uaccess: Add unsafe_copy_from_user
Date: Sat, 20 Feb 2021 19:23:52 -0600 [thread overview]
Message-ID: <20210221012401.22328-2-cmr@codefail.de> (raw)
In-Reply-To: <20210221012401.22328-1-cmr@codefail.de>
Just wrap __copy_tofrom_user() for the usual 'unsafe' pattern which
accepts a label to goto on error.
Signed-off-by: Christopher M. Riedl <cmr@codefail.de>
Reviewed-by: Daniel Axtens <dja@axtens.net>
---
arch/powerpc/include/asm/uaccess.h | 3 +++
1 file changed, 3 insertions(+)
diff --git a/arch/powerpc/include/asm/uaccess.h b/arch/powerpc/include/asm/uaccess.h
index 78e2a3990eab..33b2de642120 100644
--- a/arch/powerpc/include/asm/uaccess.h
+++ b/arch/powerpc/include/asm/uaccess.h
@@ -487,6 +487,9 @@ user_write_access_begin(const void __user *ptr, size_t len)
#define unsafe_put_user(x, p, e) \
__unsafe_put_user_goto((__typeof__(*(p)))(x), (p), sizeof(*(p)), e)
+#define unsafe_copy_from_user(d, s, l, e) \
+ unsafe_op_wrap(__copy_tofrom_user((__force void __user *)d, s, l), e)
+
#define unsafe_copy_to_user(d, s, l, e) \
do { \
u8 __user *_dst = (u8 __user *)(d); \
--
2.26.1
next prev parent reply other threads:[~2021-02-21 1:24 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-21 1:23 [PATCH v6 00/10] Improve signal performance on PPC64 with KUAP Christopher M. Riedl
2021-02-21 1:23 ` Christopher M. Riedl [this message]
2021-02-23 17:15 ` [PATCH v6 01/10] powerpc/uaccess: Add unsafe_copy_from_user Christophe Leroy
2021-02-24 18:01 ` Christopher M. Riedl
2021-02-21 1:23 ` [PATCH v6 02/10] powerpc/signal: Add unsafe_copy_{vsx, fpr}_from_user() Christopher M. Riedl
2021-02-21 1:23 ` [PATCH v6 03/10] powerpc/signal64: Remove non-inline calls from setup_sigcontext() Christopher M. Riedl
2021-02-21 1:23 ` [PATCH v6 04/10] powerpc: Reference parameter in MSR_TM_ACTIVE() macro Christopher M. Riedl
2021-02-21 1:23 ` [PATCH v6 05/10] powerpc/signal64: Remove TM ifdefery in middle of if/else block Christopher M. Riedl
2021-02-21 1:23 ` [PATCH v6 06/10] powerpc/signal64: Replace setup_sigcontext() w/ unsafe_setup_sigcontext() Christopher M. Riedl
2021-02-23 17:12 ` Christophe Leroy
2021-02-24 22:00 ` Christopher M. Riedl
2021-02-21 1:23 ` [PATCH v6 07/10] powerpc/signal64: Replace restore_sigcontext() w/ unsafe_restore_sigcontext() Christopher M. Riedl
2021-02-23 17:36 ` Christophe Leroy
2021-02-25 3:54 ` Christopher M. Riedl
2021-02-21 1:23 ` [PATCH v6 08/10] powerpc/signal64: Rewrite handle_rt_signal64() to minimise uaccess switches Christopher M. Riedl
2021-02-21 1:24 ` [PATCH v6 09/10] powerpc/signal64: Rewrite rt_sigreturn() " Christopher M. Riedl
2021-02-21 1:24 ` [PATCH v6 10/10] powerpc/signal: Use __get_user() to copy sigset_t Christopher M. Riedl
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