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authorChristophe Leroy <christophe.leroy@csgroup.eu>2021-03-19 12:06:52 +0100
committerMichael Ellerman <mpe@ellerman.id.au>2021-04-03 12:22:19 +0200
commit7c11f8893a76ac4e86c07f4b57371d5fa593627f (patch)
treeb256156cad71c8d33765dd476af0a4e9ed91f1e2 /arch/powerpc/kernel/signal.h
parentpowerpc/uaccess: Also perform 64 bits copies in unsafe_copy_from_user() on ppc32 (diff)
downloadlinux-7c11f8893a76ac4e86c07f4b57371d5fa593627f.tar.xz
linux-7c11f8893a76ac4e86c07f4b57371d5fa593627f.zip
powerpc/signal: Add unsafe_copy_ck{fpr/vsx}_from_user
Add unsafe_copy_ckfpr_from_user() and unsafe_copy_ckvsx_from_user() Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/1040687aa27553d19f749f7fb48f0c07af98ee2d.1616151715.git.christophe.leroy@csgroup.eu
Diffstat (limited to 'arch/powerpc/kernel/signal.h')
-rw-r--r--arch/powerpc/kernel/signal.h20
1 files changed, 20 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/signal.h b/arch/powerpc/kernel/signal.h
index 1393876f3814..a5152ff3c52f 100644
--- a/arch/powerpc/kernel/signal.h
+++ b/arch/powerpc/kernel/signal.h
@@ -100,6 +100,26 @@ unsigned long copy_ckfpr_from_user(struct task_struct *task, void __user *from);
unsafe_put_user(__t->thread.ckfp_state.fpr[i][TS_VSRLOWOFFSET], \
&buf[i], label);\
} while (0)
+
+#define unsafe_copy_ckfpr_from_user(task, from, label) do { \
+ struct task_struct *__t = task; \
+ u64 __user *buf = (u64 __user *)from; \
+ int i; \
+ \
+ for (i = 0; i < ELF_NFPREG - 1 ; i++) \
+ unsafe_get_user(__t->thread.TS_CKFPR(i), &buf[i], label);\
+ unsafe_get_user(__t->thread.ckfp_state.fpscr, &buf[i], failed); \
+} while (0)
+
+#define unsafe_copy_ckvsx_from_user(task, from, label) do { \
+ struct task_struct *__t = task; \
+ u64 __user *buf = (u64 __user *)from; \
+ int i; \
+ \
+ for (i = 0; i < ELF_NVSRHALFREG ; i++) \
+ unsafe_get_user(__t->thread.ckfp_state.fpr[i][TS_VSRLOWOFFSET], \
+ &buf[i], label); \
+} while (0)
#endif
#elif defined(CONFIG_PPC_FPU_REGS)