wireguard-linux/drivers/s390/crypto, branch jd/unified-crypt-queue

Merge tag 's390-5.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

2020-04-04T16:45:50Z

Pull s390 updates from Vasily Gorbik: - Update maintainers. Niklas Schnelle takes over zpci and Vineeth Vijayan common io code. - Extend cpuinfo to include topology information. - Add new extended counters for IBM z15 and sampling buffer allocation rework in perf code. - Add control over zeroing out memory during system restart. - CCA protected key block version 2 support and other fixes/improvements in crypto code. - Convert to new fallthrough; annotations. - Replace zero-length arrays with flexible-arrays. - QDIO debugfs and other small improvements. - Drop 2-level paging support optimization for compat tasks. Varios mm cleanups. - Remove broken and unused hibernate / power management support. - Remove fake numa support which does not bring any benefits. - Exclude offline CPUs from CPU topology masks to be more consistent with other architectures. - Prevent last branching instruction address leaking to userspace. - Other small various fixes and improvements all over the code. * tag 's390-5.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (57 commits) s390/mm: cleanup init_new_context() callback s390/mm: cleanup virtual memory constants usage s390/mm: remove page table downgrade support s390/qdio: set qdio_irq->cdev at allocation time s390/qdio: remove unused function declarations s390/ccwgroup: remove pm support s390/ap: remove power management code from ap bus and drivers s390/zcrypt: use kvmalloc instead of kmalloc for 256k alloc s390/mm: cleanup arch_get_unmapped_area() and friends s390/ism: remove pm support s390/cio: use fallthrough; s390/vfio: use fallthrough; s390/zcrypt: use fallthrough; s390: use fallthrough; s390/cpum_sf: Fix wrong page count in error message s390/diag: fix display of diagnose call statistics s390/ap: Remove ap device suspend and resume callbacks s390/pci: Improve handling of unset UID s390/pci: Fix zpci_alloc_domain() over allocation s390/qdio: pass ISC as parameter to chsc_sadc() ...

s390/ap: remove power management code from ap bus and drivers

2020-03-27T09:22:47Z

The s390 power management support has been removed. So the api registration and the suspend and resume callbacks and all the code related to this for the ap bus and the ap drivers is removed with this patch. Signed-off-by: Harald Freudenberger Reviewed-by: Heiko Carstens Signed-off-by: Vasily Gorbik

s390/zcrypt: use kvmalloc instead of kmalloc for 256k alloc

2020-03-27T09:22:47Z

Tests showed that it may happen that a 256k kmalloc may fail due to a temporary shortage on 256k slab entries. The find functions for cca and ep11 use a 256k array to fetch the states of all possible crypto cards and their domains in one piece. With the patch now kvmalloc is used to allocate this temporary memory as there is no need to have this memory area physical continuously. Signed-off-by: Harald Freudenberger Reviewed-by: Heiko Carstens Signed-off-by: Vasily Gorbik

s390/vfio: use fallthrough;

2020-03-25T11:39:38Z

Convert the various uses of fallthrough comments to fallthrough; Done via script Link: https://lore.kernel.org/lkml/b56602fcf79f849e733e7b521bb0e17895d390fa.1582230379.git.joe.com/ Signed-off-by: Joe Perches Signed-off-by: Heiko Carstens Signed-off-by: Vasily Gorbik

s390/zcrypt: use fallthrough;

2020-03-25T11:39:37Z

s390/ap: Remove ap device suspend and resume callbacks

2020-03-23T12:41:55Z

With the removal of the s390 hibernate support the suspend and resume callbacks for the ap devices are not needed any more. This patch removes the callbacks and the ap bus' registration struct for the power management. Signed-off-by: Harald Freudenberger Signed-off-by: Vasily Gorbik

s390/zcrypt: replace snprintf/sprintf with scnprintf

2020-03-23T12:41:54Z

snprintf() may not always return the correct size of used bytes but instead the length the resulting string would be if it would fit into the buffer. So scnprintf() is the function to use when the real length of the resulting string is needed. Replace all occurrences of snprintf() with scnprintf() where the return code is further processed. Also find and fix some occurrences where sprintf() was used. Suggested-by: Takashi Iwai Signed-off-by: Harald Freudenberger Signed-off-by: Vasily Gorbik

s390/zcrypt: Use scnprintf() for avoiding potential buffer overflow

2020-03-23T12:41:54Z

Since snprintf() returns the would-be-output size instead of the actual output size, the succeeding calls may go beyond the given buffer limit. Fix it by replacing with scnprintf(). Message-Id: <20200311090915.21059-1-tiwai@suse.de> Signed-off-by: Takashi Iwai Signed-off-by: Harald Freudenberger Signed-off-by: Vasily Gorbik

s390: Replace zero-length array with flexible-array member

2020-02-27T15:02:21Z

The current codebase makes use of the zero-length array language extension to the C90 standard, but the preferred mechanism to declare variable-length types such as these ones is a flexible array member[1][2], introduced in C99: struct foo { int stuff; struct boo array[]; }; By making use of the mechanism above, we will get a compiler warning in case the flexible array does not occur last in the structure, which will help us prevent some kind of undefined behavior bugs from being inadvertently introduced[3] to the codebase from now on. Also, notice that, dynamic memory allocations won't be affected by this change: "Flexible array members have incomplete type, and so the sizeof operator may not be applied. As a quirk of the original implementation of zero-length arrays, sizeof evaluates to zero."[1] This issue was found with the help of Coccinelle. [1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html [2] https://github.com/KSPP/linux/issues/21 [3] commit 76497732932f ("cxgb3/l2t: Fix undefined behaviour") Link: https://lkml.kernel.org/r/20200221150612.GA9717@embeddedor Signed-off-by: Gustavo A. R. Silva Signed-off-by: Vasily Gorbik

s390/zcrypt: Support for CCA protected key block version 2

2020-02-17T17:04:15Z

There will come a new CCA keyblock version 2 for protected keys delivered back to the OS. The difference is only the amount of available buffer space to be up to 256 bytes for version 2. Signed-off-by: Harald Freudenberger Signed-off-by: Vasily Gorbik