linux-dev/arch/x86/syscalls, branch master

x86/asm/entry: Move the arch/x86/syscalls/ definitions to arch/x86/entry/syscalls/

2015-06-04T05:37:37Z

The build time generated syscall definitions are entry code related, move them into the arch/x86/entry/ directory. Cc: Borislav Petkov Cc: H. Peter Anvin Cc: Linus Torvalds Cc: Thomas Gleixner Cc: Andy Lutomirski Cc: Denys Vlasenko Cc: Brian Gerst Cc: Peter Zijlstra Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar

Merge tag 'stable/for-linus-4.1-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

2015-04-16T19:01:03Z

Pull xen features and fixes from David Vrabel: - use a single source list of hypercalls, generating other tables etc. at build time. - add a "Xen PV" APIC driver to support >255 VCPUs in PV guests. - significant performance improve to guest save/restore/migration. - scsiback/front save/restore support. - infrastructure for multi-page xenbus rings. - misc fixes. * tag 'stable/for-linus-4.1-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: xen/pci: Try harder to get PXM information for Xen xenbus_client: Extend interface to support multi-page ring xen-pciback: also support disabling of bus-mastering and memory-write-invalidate xen: support suspend/resume in pvscsi frontend xen: scsiback: add LUN of restored domain xen-scsiback: define a pr_fmt macro with xen-pvscsi xen/mce: fix up xen_late_init_mcelog() error handling xen/privcmd: improve performance of MMAPBATCH_V2 xen: unify foreign GFN map/unmap for auto-xlated physmap guests x86/xen/apic: WARN with details. x86/xen: Provide a "Xen PV" APIC driver to support >255 VCPUs xen/pciback: Don't print scary messages when unsupported by hypervisor. xen: use generated hypercall symbols in arch/x86/xen/xen-head.S xen: use generated hypervisor symbols in arch/x86/xen/trace.c xen: synchronize include/xen/interface/xen.h with xen xen: build infrastructure for generating hypercall depending symbols xen: balloon: Use static attribute groups for sysfs entries xen: pcpu: Use static attribute groups for sysfs entry

xen: build infrastructure for generating hypercall depending symbols

2015-03-16T14:49:13Z

Today there are several places in the kernel which build tables containing one entry for each possible Xen hypercall. Create an infrastructure to be able to generate these tables at build time. Based-on-patch-by: Jan Beulich Signed-off-by: Juergen Gross Reviewed-by: David Vrabel Acked-by: Ingo Molnar Signed-off-by: David Vrabel

x86/asm/entry/64: Remove stub_iopl

2015-03-10T12:56:10Z

stub_iopl is no longer needed: pt_regs->flags needs no fixing up after previous change. Remove it. Signed-off-by: Denys Vlasenko Cc: Alexei Starovoitov Cc: Borislav Petkov Cc: Frederic Weisbecker Cc: H. Peter Anvin Cc: Kees Cook Cc: Linus Torvalds Cc: Oleg Nesterov Cc: Steven Rostedt Cc: Will Drewry Link: http://lkml.kernel.org/r/1425984307-2143-1-git-send-email-dvlasenk@redhat.com Signed-off-by: Ingo Molnar

x86/compat: Remove sys32_vm86_warning

2015-03-04T05:16:21Z

The check against lastcomm is racy, and the message it produces isn't necessary. vm86 support can be disabled on a 32-bit kernel also, and doesn't have this message. Switch to sys_ni_syscall instead. Signed-off-by: Brian Gerst Cc: Borislav Petkov Cc: H. Peter Anvin Cc: Linus Torvalds Cc: Thomas Gleixner Link: http://lkml.kernel.org/r/1425439896-8322-4-git-send-email-brgerst@gmail.com Signed-off-by: Ingo Molnar

x86: hook up execveat system call

2014-12-13T20:42:51Z

Hook up x86-64, i386 and x32 ABIs. Signed-off-by: David Drysdale Cc: Meredydd Luff Cc: Shuah Khan Cc: "Eric W. Biederman" Cc: Andy Lutomirski Cc: Alexander Viro Cc: Thomas Gleixner Cc: Ingo Molnar Cc: "H. Peter Anvin" Cc: Kees Cook Cc: Arnd Bergmann Cc: Rich Felker Cc: Christoph Hellwig Cc: Michael Kerrisk Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

bpf: enable bpf syscall on x64 and i386

2014-09-26T19:05:14Z

done as separate commit to ease conflict resolution Signed-off-by: Alexei Starovoitov Signed-off-by: David S. Miller

kexec: new syscall kexec_file_load() declaration

2014-08-08T22:57:32Z

This is the new syscall kexec_file_load() declaration/interface. I have reserved the syscall number only for x86_64 so far. Other architectures (including i386) can reserve syscall number when they enable the support for this new syscall. Signed-off-by: Vivek Goyal Cc: Michael Kerrisk Cc: Borislav Petkov Cc: Yinghai Lu Cc: Eric Biederman Cc: H. Peter Anvin Cc: Matthew Garrett Cc: Greg Kroah-Hartman Cc: Dave Young Cc: WANG Chao Cc: Baoquan He Cc: Andy Lutomirski Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

shm: add memfd_create() syscall

2014-08-08T22:57:31Z

memfd_create() is similar to mmap(MAP_ANON), but returns a file-descriptor that you can pass to mmap(). It can support sealing and avoids any connection to user-visible mount-points. Thus, it's not subject to quotas on mounted file-systems, but can be used like malloc()'ed memory, but with a file-descriptor to it. memfd_create() returns the raw shmem file, so calls like ftruncate() can be used to modify the underlying inode. Also calls like fstat() will return proper information and mark the file as regular file. If you want sealing, you can specify MFD_ALLOW_SEALING. Otherwise, sealing is not supported (like on all other regular files). Compared to O_TMPFILE, it does not require a tmpfs mount-point and is not subject to a filesystem size limit. It is still properly accounted to memcg limits, though, and to the same overcommit or no-overcommit accounting as all user memory. Signed-off-by: David Herrmann Acked-by: Hugh Dickins Cc: Michael Kerrisk Cc: Ryan Lortie Cc: Lennart Poettering Cc: Daniel Mack Cc: Andy Lutomirski Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

Merge tag 'random_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random

2014-08-06T15:16:24Z

Pull randomness updates from Ted Ts'o: "Cleanups and bug fixes to /dev/random, add a new getrandom(2) system call, which is a superset of OpenBSD's getentropy(2) call, for use with userspace crypto libraries such as LibreSSL. Also add the ability to have a kernel thread to pull entropy from hardware rng devices into /dev/random" * tag 'random_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random: hwrng: Pass entropy to add_hwgenerator_randomness() in bits, not bytes random: limit the contribution of the hw rng to at most half random: introduce getrandom(2) system call hw_random: fix sparse warning (NULL vs 0 for pointer) random: use registers from interrupted code for CPU's w/o a cycle counter hwrng: add per-device entropy derating hwrng: create filler thread random: add_hwgenerator_randomness() for feeding entropy from devices random: use an improved fast_mix() function random: clean up interrupt entropy accounting for archs w/o cycle counters random: only update the last_pulled time if we actually transferred entropy random: remove unneeded hash of a portion of the entropy pool random: always update the entropy pool under the spinlock