linux_dsm_epyc7002/arch/x86
Christian Brauner d68dbb0c9a
arch: handle arches who do not yet define clone3
This cleanly handles arches who do not yet define clone3.

clone3() was initially placed under __ARCH_WANT_SYS_CLONE under the
assumption that this would cleanly handle all architectures. It does
not.
Architectures such as nios2 or h8300 simply take the asm-generic syscall
definitions and generate their syscall table from it. Since they don't
define __ARCH_WANT_SYS_CLONE the build would fail complaining about
sys_clone3 missing. The reason this doesn't happen for legacy clone is
that nios2 and h8300 provide assembly stubs for sys_clone. This seems to
be done for architectural reasons.

The build failures for nios2 and h8300 were caught int -next luckily.
The solution is to define __ARCH_WANT_SYS_CLONE3 that architectures can
add. Additionally, we need a cond_syscall(clone3) for architectures such
as nios2 or h8300 that generate their syscall table in the way I
explained above.

Fixes: 8f3220a806 ("arch: wire-up clone3() syscall")
Signed-off-by: Christian Brauner <christian@brauner.io>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Kees Cook <keescook@chromium.org>
Cc: David Howells <dhowells@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Adrian Reber <adrian@lisas.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Florian Weimer <fweimer@redhat.com>
Cc: linux-api@vger.kernel.org
Cc: linux-arch@vger.kernel.org
Cc: x86@kernel.org
2019-06-21 01:54:53 +02:00
..
boot Merge branch 'acpica' 2019-05-06 10:49:01 +02:00
configs x86/defconfig: Remove archaic partition tables support 2019-04-19 12:29:48 +02:00
crypto Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2019-05-06 20:15:06 -07:00
entry arch: wire-up clone3() syscall 2019-06-09 09:29:46 +02:00
events * ARM: support for SVE and Pointer Authentication in guests, PMU improvements 2019-05-17 10:33:30 -07:00
hyperv x86/hyperv: Make hv_vcpu_is_preempted() visible 2019-04-19 17:58:57 +02:00
ia32 fork: add clone3 2019-06-09 09:29:28 +02:00
include arch: handle arches who do not yet define clone3 2019-06-21 01:54:53 +02:00
kernel treewide: prefix header search paths with $(srctree)/ 2019-05-18 11:49:57 +09:00
kvm * ARM: support for SVE and Pointer Authentication in guests, PMU improvements 2019-05-17 10:33:30 -07:00
lib Merge branch 'x86-timers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-05-06 16:31:44 -07:00
math-emu x86/fpu: Always init the state in fpu__clear() 2019-04-09 19:28:06 +02:00
mm Kbuild updates for v5.2 (2nd) 2019-05-19 11:53:58 -07:00
net bpf, x32: Fix bug for BPF_ALU64 | BPF_NEG 2019-05-01 23:40:47 +02:00
oprofile
pci x86/PCI: Fix PCI IRQ routing table memory leak 2019-04-17 15:27:03 -05:00
platform power supply and reset changes for the v5.2 series 2019-05-15 18:50:40 -07:00
power crypto: shash - remove shash_desc::flags 2019-04-25 15:38:12 +08:00
purgatory kbuild: move bin2c back to scripts/ from scripts/basic/ 2018-07-18 01:18:05 +09:00
ras
realmode x86/realmode: Make set_real_mode_mem() static inline 2019-03-29 10:16:27 +01:00
tools Merge branch 'x86-irq-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-05-06 15:56:41 -07:00
um audit/stable-5.2 PR 20190507 2019-05-07 19:06:04 -07:00
video
xen xen: fixes and features for 5.2-rc1 2019-05-15 18:44:52 -07:00
.gitignore
Kbuild KVM: x86: Allow Qemu/KVM to use PVH entry point 2018-12-13 13:41:49 -05:00
Kconfig Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-05-16 11:02:27 -07:00
Kconfig.cpu x86/cpu: Create Hygon Dhyana architecture support file 2018-09-27 16:14:05 +02:00
Kconfig.debug compiler: allow all arches to enable CONFIG_OPTIMIZE_INLINING 2019-05-14 19:52:48 -07:00
Makefile x86/build: Keep local relocations with ld.lld 2019-04-05 12:34:35 +02:00
Makefile_32.cpu
Makefile.um x86, powerpc: Remove -funit-at-a-time compiler option entirely 2018-12-09 11:55:32 +01:00