linux-dev/arch/parisc/lib, branch master

parisc: Drop homebrewn io[read|write]64_[lo_hi|hi_lo]

2022-09-23T19:52:27Z

The parisc implements ioread64_lo_hi(), ioread64_hi_lo() iowrite64_lo_hi() and iowrite64_hi_lo() while we already have a perfectly working generic version in the generic portable assembly in . Drop the custom versions in favor for the defaults. Fixes: 77bfc8bdb5a1 ("parisc: Remove 64bit access on 32bit machines") Cc: Arnd Bergmann Acked-by: Helge Deller Reported-by: Helge Deller Reported-by: kernel test robot Signed-off-by: Linus Walleij Signed-off-by: Arnd Bergmann

parisc: Remove 64bit access on 32bit machines

2022-09-10T07:55:55Z

The parisc was using some readq/writeq accessors without special considerations as to what will happen on 32bit CPUs if you do this. Maybe we have been lucky that it "just worked" on 32bit due to the compiler behaviour, or the code paths were never executed. Fix the two offending code sites like this: arch/parisc/lib/iomap.c: - Put ifdefs around the 64bit accessors and make sure that ioread64, ioread64be, iowrite64 and iowrite64be are not available on 32bit builds. - Also fold in a bug fix where 64bit access was by mistake using 32bit writel() accessors rather than 64bit writeq(). drivers/parisc/sba_iommu.c: - Access any 64bit registers using _lo_hi-semantics by way of the readq and writeq operations provided by Signed-off-by: Linus Walleij Reviewed-by: Arnd Bergmann Cc: James E.J. Bottomley Cc: Helge Deller Cc: linux-parisc@vger.kernel.org Cc: linux-arch@vger.kernel.org Cc: Arnd Bergmann Cc: John David Anglin Signed-off-by: Arnd Bergmann

parisc: Use constants to encode the space registers like SR_KERNEL

2022-03-11T18:49:31Z

Use the provided space register constants instead of hardcoded values. Signed-off-by: Helge Deller

parisc: Add ioread64_lo_hi() and iowrite64_lo_hi()

2022-02-07T15:33:31Z

It's a followup to the previous commit f15309d7ad5d ("parisc: Add ioread64_hi_lo() and iowrite64_hi_lo()") which does only half of the job. Add the rest, so we won't get a new kernel test robot reports. Fixes: f15309d7ad5d ("parisc: Add ioread64_hi_lo() and iowrite64_hi_lo()") Signed-off-by: Andy Shevchenko Signed-off-by: Helge Deller

parisc: mark xchg functions notrace

2021-11-01T06:36:00Z

tracing the xchg functions leads to recursion in various places. Therefore mark the function as notrace. Signed-off-by: Sven Schnelle Signed-off-by: Helge Deller

parisc: Declare pci_iounmap() parisc version only when CONFIG_PCI enabled

2021-09-19T17:36:09Z

Linus noticed odd declaration rules for pci_iounmap() in iomap.h and pci_iomap.h, where it dependend on either NO_GENERIC_PCI_IOPORT_MAP or GENERIC_IOMAP when CONFIG_PCI was disabled. Testing on parisc seems to indicate that we need pci_iounmap() only when CONFIG_PCI is enabled, so the declaration of pci_iounmap() can be moved cleanly into pci_iomap.h in sync with the declarations of pci_iomap(). Link: https://lore.kernel.org/all/CAHk-=wjRrh98pZoQ+AzfWmsTZacWxTJKXZ9eKU2X_0+jM=O8nw@mail.gmail.com/ Signed-off-by: Helge Deller Suggested-by: Linus Torvalds Fixes: 97a29d59fc22 ("[PARISC] fix compile break caused by iomap: make IOPORT/PCI mapping functions conditional") Cc: Arnd Bergmann Cc: Guenter Roeck Cc: Ulrich Teichert Cc: James Bottomley Signed-off-by: Linus Torvalds

parisc: Implement __get/put_kernel_nofault()

2021-09-09T20:53:09Z

Remove CONFIG_SET_FS from parisc, so we need to add __get_kernel_nofault() and __put_kernel_nofault(), define HAVE_GET_KERNEL_NOFAULT and remove set_fs(), get_fs(), load_sr2(), thread_info->addr_limit, KERNEL_DS and USER_DS. The nice side-effect of this patch is that we now can directly access userspace via sr3 without the need to use a temporary sr2 which is either copied from sr3 or set to zero (for kernel space). Signed-off-by: Helge Deller Suggested-by: Arnd Bergmann

parisc: Drop strnlen_user() in favour of generic version

2021-09-09T10:44:30Z

As suggested by Arnd Bergmann, drop the parisc version of strnlen_user() and switch to the generic version. Suggested-by: Arnd Bergmann Acked-by: Arnd Bergmann Signed-off-by: Helge Deller

arch: remove compat_alloc_user_space

2021-09-08T22:32:35Z

All users of compat_alloc_user_space() and copy_in_user() have been removed from the kernel, only a few functions in sparc remain that can be changed to calling arch_copy_in_user() instead. Link: https://lkml.kernel.org/r/20210727144859.4150043-7-arnd@kernel.org Signed-off-by: Arnd Bergmann Reviewed-by: Christoph Hellwig Cc: Al Viro Cc: Benjamin Herrenschmidt Cc: Borislav Petkov Cc: Catalin Marinas Cc: Christian Borntraeger Cc: Christoph Hellwig Cc: "David S. Miller" Cc: Eric Biederman Cc: Feng Tang Cc: Heiko Carstens Cc: Helge Deller Cc: "H. Peter Anvin" Cc: Ingo Molnar Cc: "James E.J. Bottomley" Cc: Michael Ellerman Cc: Paul Mackerras Cc: Thomas Bogendoerfer Cc: Thomas Gleixner Cc: Vasily Gorbik Cc: Will Deacon Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

Revert "parisc: Add assembly implementations for memset, strlen, strcpy, strncpy and strcat"

2021-08-29T17:13:32Z

This reverts commit 83af58f8068ea3f7b3c537c37a30887bfa585069. It turns out that at least the assembly implementation for strncpy() was buggy. Revert the whole commit and return back to the default coding. Signed-off-by: Helge Deller Cc: # v5.4+ Cc: Rasmus Villemoes Signed-off-by: Linus Torvalds