Searched hist:"445 a58ce34ae59cd098f2f2a27275df40487716a" (Results 1 – 2 of 2) sorted by relevance
/linux/arch/mips/include/asm/ |
H A D | fpu_emulator.h | diff 445a58ce34ae59cd098f2f2a27275df40487716a Wed Aug 23 20:17:51 CEST 2017 Paul Burton <paul.burton@imgtec.com> MIPS: math-emu: Correct user fault_addr type
The fault_addr argument to fpu_emulator_cop1Handler(), fpux_emu() and cop1Emulate() has up until now been declared as:
void *__user *fault_addr
This is essentially a pointer in user memory which points to a pointer to void. This is not the intent for our code, which is actually operating on a pointer to a pointer to void where the pointer to void is pointing at user memory. ie. the pointer is in kernel memory & points to user memory.
This mismatch produces a lot of sparse warnings that look like this:
arch/mips/math-emu/cp1emu.c:1485:45: warning: incorrect type in assignment (different address spaces) expected void *[noderef] <asn:1><noident> got unsigned int [noderef] [usertype] <asn:1>*[assigned] va
Fix these by modifying the declaration of the fault_addr argument to:
void __user **fault_addr
Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: linux-mips@linux-mips.org Cc: trivial@kernel.org Patchwork: https://patchwork.linux-mips.org/patch/17173/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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/linux/arch/mips/math-emu/ |
H A D | cp1emu.c | diff 445a58ce34ae59cd098f2f2a27275df40487716a Wed Aug 23 20:17:51 CEST 2017 Paul Burton <paul.burton@imgtec.com> MIPS: math-emu: Correct user fault_addr type
The fault_addr argument to fpu_emulator_cop1Handler(), fpux_emu() and cop1Emulate() has up until now been declared as:
void *__user *fault_addr
This is essentially a pointer in user memory which points to a pointer to void. This is not the intent for our code, which is actually operating on a pointer to a pointer to void where the pointer to void is pointing at user memory. ie. the pointer is in kernel memory & points to user memory.
This mismatch produces a lot of sparse warnings that look like this:
arch/mips/math-emu/cp1emu.c:1485:45: warning: incorrect type in assignment (different address spaces) expected void *[noderef] <asn:1><noident> got unsigned int [noderef] [usertype] <asn:1>*[assigned] va
Fix these by modifying the declaration of the fault_addr argument to:
void __user **fault_addr
Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: linux-mips@linux-mips.org Cc: trivial@kernel.org Patchwork: https://patchwork.linux-mips.org/patch/17173/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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