- 01 2月, 2018 1 次提交
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由 Pavel Tatashin 提交于
There is no need to have ARCH_SUPPORTS_DEFERRED_STRUCT_PAGE_INIT, as all the page initialization code is in common code. Also, there is no need to depend on MEMORY_HOTPLUG, as initialization code does not really use hotplug memory functionality. So, we can remove this requirement as well. This patch allows to use deferred struct page initialization on all platforms with memblock allocator. Tested on x86, arm64, and sparc. Also, verified that code compiles on PPC with CONFIG_MEMORY_HOTPLUG disabled. Link: http://lkml.kernel.org/r/20171117014601.31606-1-pasha.tatashin@oracle.comSigned-off-by: NPavel Tatashin <pasha.tatashin@oracle.com> Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com> [s390] Reviewed-by: NKhalid Aziz <khalid.aziz@oracle.com> Acked-by: NMichael Ellerman <mpe@ellerman.id.au> Acked-by: NMichal Hocko <mhocko@suse.com> Cc: Steven Sistare <steven.sistare@oracle.com> Cc: Daniel Jordan <daniel.m.jordan@oracle.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Reza Arbab <arbab@linux.vnet.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Mel Gorman <mgorman@techsingularity.net> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 24 1月, 2018 1 次提交
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由 Christian Borntraeger 提交于
Some parts of the cmma migration bitmap is already protected with the kvm->lock (e.g. the migration start). On the other hand the read of the cmma bits is not protected against a concurrent free, neither is the emulation of the ESSA instruction. Let's extend the locking to all related ioctls by using the slots lock for - kvm_s390_vm_start_migration - kvm_s390_vm_stop_migration - kvm_s390_set_cmma_bits - kvm_s390_get_cmma_bits In addition to that, we use synchronize_srcu before freeing the migration structure as all users hold kvm->srcu for read. (e.g. the ESSA handler). Reported-by: NDavid Hildenbrand <david@redhat.com> Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com> Cc: stable@vger.kernel.org # 4.13+ Fixes: 190df4a2 (KVM: s390: CMMA tracking, ESSA emulation, migration mode) Reviewed-by: NClaudio Imbrenda <imbrenda@linux.vnet.ibm.com> Reviewed-by: NDavid Hildenbrand <david@redhat.com> Reviewed-by: NCornelia Huck <cohuck@redhat.com>
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- 21 1月, 2018 1 次提交
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由 Christian Borntraeger 提交于
The new firmware interfaces for branch prediction behaviour changes are transparently available for the guest. Nevertheless, there is new state attached that should be migrated and properly resetted. Provide a mechanism for handling reset, migration and VSIE. Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com> Reviewed-by: NDavid Hildenbrand <david@redhat.com> Reviewed-by: NCornelia Huck <cohuck@redhat.com> [Changed capability number to 152. - Radim] Signed-off-by: NRadim Krčmář <rkrcmar@redhat.com>
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- 16 1月, 2018 3 次提交
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由 Eric W. Biederman 提交于
Among the existing architecture specific versions of copy_siginfo_to_user32 there are several different implementation problems. Some architectures fail to handle all of the cases in in the siginfo union. Some architectures perform a blind copy of the siginfo union when the si_code is negative. A blind copy suggests the data is expected to be in 32bit siginfo format, which means that receiving such a signal via signalfd won't work, or that the data is in 64bit siginfo and the code is copying nonsense to userspace. Create a single instance of copy_siginfo_to_user32 that all of the architectures can share, and teach it to handle all of the cases in the siginfo union correctly, with the assumption that siginfo is stored internally to the kernel is 64bit siginfo format. A special case is made for x86 x32 format. This is needed as presence of both x32 and ia32 on x86_64 results in two different 32bit signal formats. By allowing this small special case there winds up being exactly one code base that needs to be maintained between all of the architectures. Vastly increasing the testing base and the chances of finding bugs. As the x86 copy of copy_siginfo_to_user32 the call of the x86 signal_compat_build_tests were moved into sigaction_compat_abi, so that they will keep running. Signed-off-by: N"Eric W. Biederman" <ebiederm@xmission.com>
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由 Eric W. Biederman 提交于
The function copy_siginfo_from_user32 is used for two things, in ptrace since the dawn of siginfo for arbirarily modifying a signal that user space sees, and in sigqueueinfo to send a signal with arbirary siginfo data. Create a single copy of copy_siginfo_from_user32 that all architectures share, and teach it to handle all of the cases in the siginfo union. In the generic version of copy_siginfo_from_user32 ensure that all of the fields in siginfo are initialized so that the siginfo structure can be safely copied to userspace if necessary. When copying the embedded sigval union copy the si_int member. That ensures the 32bit values passes through the kernel unchanged. Signed-off-by: N"Eric W. Biederman" <ebiederm@xmission.com>
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由 Al Viro 提交于
--EWB Added #ifdef CONFIG_X86_X32_ABI to arch/x86/kernel/signal_compat.c Changed #ifdef CONFIG_X86_X32 to #ifdef CONFIG_X86_X32_ABI in linux/compat.h CONFIG_X86_X32 is set when the user requests X32 support. CONFIG_X86_X32_ABI is set when the user requests X32 support and the tool-chain has X32 allowing X32 support to be built. Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk> Signed-off-by: NEric W. Biederman <ebiederm@xmission.com>
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- 15 1月, 2018 2 次提交
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由 Christoph Hellwig 提交于
The trivial direct mapping implementation already does a virtual to physical translation which isn't strictly a noop, and will soon learn to do non-direct but linear physical to dma translations through the device offset and a few small tricks. Rename it to a better fitting name. Signed-off-by: NChristoph Hellwig <hch@lst.de> Reviewed-by: NVladimir Murzin <vladimir.murzin@arm.com>
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由 Christoph Hellwig 提交于
For architectures that just use the generic dma_noop_ops we can provide a generic version of dma-mapping.h. Signed-off-by: NChristoph Hellwig <hch@lst.de>
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- 13 1月, 2018 1 次提交
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由 Eric W. Biederman 提交于
We have never passed either field to or from userspace so just remove them. Signed-off-by: N"Eric W. Biederman" <ebiederm@xmission.com>
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- 10 1月, 2018 2 次提交
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由 Christoph Hellwig 提交于
This is not needed in drivers, so move it to a private header. Signed-off-by: NChristoph Hellwig <hch@lst.de>
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由 David Howells 提交于
Construct the init thread stack in the linker script rather than doing it by means of a union so that ia64's init_task.c can be got rid of. The following symbols are then made available from INIT_TASK_DATA() linker script macro: init_thread_union init_stack INIT_TASK_DATA() also expands the region to THREAD_SIZE to accommodate the size of the init stack. init_thread_union is given its own section so that it can be placed into the stack space in the right order. I'm assuming that the ia64 ordering is correct and that the task_struct is first and the thread_info second. Signed-off-by: NDavid Howells <dhowells@redhat.com> Tested-by: NTony Luck <tony.luck@intel.com> Tested-by: Will Deacon <will.deacon@arm.com> (arm64) Tested-by: NPalmer Dabbelt <palmer@sifive.com> Acked-by: NThomas Gleixner <tglx@linutronix.de>
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- 09 1月, 2018 1 次提交
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由 Christoph Hellwig 提交于
Signed-off-by: NChristoph Hellwig <hch@lst.de>
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- 22 12月, 2017 2 次提交
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由 Christian Borntraeger 提交于
We must not go beyond the pre-allocated buffer. This can happen when a new memory slot is added during migration. Reported-by: NDavid Hildenbrand <david@redhat.com> Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com> Cc: stable@vger.kernel.org # 4.13+ Fixes: 190df4a2 (KVM: s390: CMMA tracking, ESSA emulation, migration mode) Reviewed-by: NCornelia Huck <cohuck@redhat.com> Reviewed-by: NDavid Hildenbrand <david@redhat.com>
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由 Christian Borntraeger 提交于
When multiple memory slots are present the cmma migration code does not allocate enough memory for the bitmap. The memory slots are sorted in reverse order, so we must use gfn and size of slot[0] instead of the last one. Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com> Reviewed-by: NClaudio Imbrenda <imbrenda@linux.vnet.ibm.com> Cc: stable@vger.kernel.org # 4.13+ Fixes: 190df4a2 (KVM: s390: CMMA tracking, ESSA emulation, migration mode) Reviewed-by: NCornelia Huck <cohuck@redhat.com>
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- 16 12月, 2017 2 次提交
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由 Linus Torvalds 提交于
This reverts commits 5c9d2d5c, c7da82b8, and e7fe7b5c. We'll probably need to revisit this, but basically we should not complicate the get_user_pages_fast() case, and checking the actual page table protection key bits will require more care anyway, since the protection keys depend on the exact state of the VM in question. Particularly when doing a "remote" page lookup (ie in somebody elses VM, not your own), you need to be much more careful than this was. Dave Hansen says: "So, the underlying bug here is that we now a get_user_pages_remote() and then go ahead and do the p*_access_permitted() checks against the current PKRU. This was introduced recently with the addition of the new p??_access_permitted() calls. We have checks in the VMA path for the "remote" gups and we avoid consulting PKRU for them. This got missed in the pkeys selftests because I did a ptrace read, but not a *write*. I also didn't explicitly test it against something where a COW needed to be done" It's also not entirely clear that it makes sense to check the protection key bits at this level at all. But one possible eventual solution is to make the get_user_pages_fast() case just abort if it sees protection key bits set, which makes us fall back to the regular get_user_pages() case, which then has a vma and can do the check there if we want to. We'll see. Somewhat related to this all: what we _do_ want to do some day is to check the PAGE_USER bit - it should obviously always be set for user pages, but it would be a good check to have back. Because we have no generic way to test for it, we lost it as part of moving over from the architecture-specific x86 GUP implementation to the generic one in commit e585513b ("x86/mm/gup: Switch GUP to the generic get_user_page_fast() implementation"). Cc: Peter Zijlstra <peterz@infradead.org> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: "Jérôme Glisse" <jglisse@redhat.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Daniel Borkmann 提交于
The assumption of unconditionally reloading skb pointers on BPF helper calls where bpf_helper_changes_pkt_data() holds true is wrong. There can be different contexts where the BPF helper would enforce a reload such as in case of XDP. Here, we do have a struct xdp_buff instead of struct sk_buff as context, thus this will access garbage. JITs only ever need to deal with cached skb pointer reload when ld_abs/ind was seen, therefore guard the reload behind SEEN_SKB only. Tested on s390x. Fixes: 9db7f2b8 ("s390/bpf: recache skb->data/hlen for skb_vlan_push/pop") Signed-off-by: NDaniel Borkmann <daniel@iogearbox.net> Acked-by: NAlexei Starovoitov <ast@kernel.org> Cc: Michael Holzheu <holzheu@linux.vnet.ibm.com> Signed-off-by: NAlexei Starovoitov <ast@kernel.org>
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- 15 12月, 2017 2 次提交
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由 Martin Schwidefsky 提交于
With CONFIG_PREEMPT=y there is a possible race in disable_sacf_uaccess. The new set_fs value needs to be stored the the task structure first, the control register update needs to be second. Otherwise a preemptive schedule may interrupt the code right after the control register update has been done and the next time the task is scheduled we get an incorrect value in the control register due to the old set_fs setting. Fixes: 0aaba41b ("s390: remove all code using the access register mode") Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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由 Thiago Rafael Becker 提交于
In testing, we found that nfsd threads may call set_groups in parallel for the same entry cached in auth.unix.gid, racing in the call of groups_sort, corrupting the groups for that entry and leading to permission denials for the client. This patch: - Make groups_sort globally visible. - Move the call to groups_sort to the modifiers of group_info - Remove the call to groups_sort from set_groups Link: http://lkml.kernel.org/r/20171211151420.18655-1-thiago.becker@gmail.comSigned-off-by: NThiago Rafael Becker <thiago.becker@gmail.com> Reviewed-by: NMatthew Wilcox <mawilcox@microsoft.com> Reviewed-by: NNeilBrown <neilb@suse.com> Acked-by: N"J. Bruce Fields" <bfields@fieldses.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: <stable@vger.kernel.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 13 12月, 2017 1 次提交
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由 Sebastian Ott 提交于
In a virtualized setup lazy flushing can lead to the hypervisor running out of resources when lots of guest pages need to be pinned. In this situation simply trigger a global flush to give the hypervisor a chance to free some of these resources. Signed-off-by: NSebastian Ott <sebott@linux.vnet.ibm.com> Reviewed-by: NGerald Schaefer <gerald.schaefer@de.ibm.com> Reviewed-by: NPierre Morel <pmorel@linux.vnet.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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- 07 12月, 2017 1 次提交
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由 Heiko Carstens 提交于
When wiring up the socket system calls the compat entries were incorrectly set. Not all of them point to the corresponding compat wrapper functions, which clear the upper 33 bits of user space pointers, like it is required. Fixes: 977108f8 ("s390: wire up separate socketcalls system calls") Cc: <stable@vger.kernel.org> # v4.3+ Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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- 06 12月, 2017 4 次提交
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由 Janosch Frank 提交于
All skey functions call skey_check_enable at their start, which checks if we are in the PSTATE and injects a privileged operation exception if we are. Unfortunately they continue processing afterwards and perform the operation anyhow as skey_check_enable does not deliver an error if the exception injection was successful. Let's move the PSTATE check into the skey functions and exit them on such an occasion, also we now do not enable skey handling anymore in such a case. Signed-off-by: NJanosch Frank <frankja@linux.vnet.ibm.com> Reviewed-by: NChristian Borntraeger <borntraeger@de.ibm.com> Fixes: a7e19ab5 ("KVM: s390: handle missing storage-key facility") Cc: <stable@vger.kernel.org> # v4.8+ Reviewed-by: NCornelia Huck <cohuck@redhat.com> Reviewed-by: NThomas Huth <thuth@redhat.com> Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com>
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由 Christian Borntraeger 提交于
Old kernels did not check for zero in the irq_state.flags field and old QEMUs did not zero the flag/reserved fields when calling KVM_S390_*_IRQ_STATE. Let's add comments to prevent future uses of these fields. Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com> Reviewed-by: NThomas Huth <thuth@redhat.com> Reviewed-by: NCornelia Huck <cohuck@redhat.com> Reviewed-by: NDavid Hildenbrand <david@redhat.com> Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com>
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由 Greg Kroah-Hartman 提交于
Now that the SPDX tag is in all arch/s390/kvm/ files, that identifies the license in a specific and legally-defined manner. So the extra GPL text wording can be removed as it is no longer needed at all. This is done on a quest to remove the 700+ different ways that files in the kernel describe the GPL license text. And there's unneeded stuff like the address (sometimes incorrect) for the FSF which is never needed. No copyright headers or other non-license-description text was removed. Cc: Christian Borntraeger <borntraeger@de.ibm.com> Cc: Cornelia Huck <cohuck@redhat.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org> Message-Id: <20171124140043.10062-9-gregkh@linuxfoundation.org> Acked-by: NCornelia Huck <cohuck@redhat.com> Acked-by: N"Paul E. McKenney" <paulmck@linux.vnet.ibm.com> Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com>
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由 Greg Kroah-Hartman 提交于
It's good to have SPDX identifiers in all files to make it easier to audit the kernel tree for correct licenses. Update the arch/s390/kvm/ files with the correct SPDX license identifier based on the license text in the file itself. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. This work is based on a script and data from Thomas Gleixner, Philippe Ombredanne, and Kate Stewart. Cc: Christian Borntraeger <borntraeger@de.ibm.com> Cc: Cornelia Huck <cohuck@redhat.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Kate Stewart <kstewart@linuxfoundation.org> Cc: Philippe Ombredanne <pombredanne@nexb.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org> Message-Id: <20171124140043.10062-3-gregkh@linuxfoundation.org> Acked-by: NCornelia Huck <cohuck@redhat.com> Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com>
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- 05 12月, 2017 7 次提交
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由 Hendrik Brueckner 提交于
Correct whitespace and coding style issues in the s390 asm/ptrace.h uapi header file. This is preparatory work to copy it to the tools/ directory for inclusion by selftests and perf. Signed-off-by: NHendrik Brueckner <brueckner@linux.vnet.ibm.com> Signed-off-by: NDaniel Borkmann <daniel@iogearbox.net>
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由 Hendrik Brueckner 提交于
To mitigate and correct the broken uapi for the BPF_PROG_TYPE_PERF_EVENT program type, introduce a user_pt_regs structure (similar to arm64) that exports parts from the beginnig of the pt_regs structure. The export must start with the beginning of the pt_regs structure because to correctly calculate BPF prologues for perf (regs_query_register_offset()). For BPF_PROG_TYPE_PERF_EVENT program types, the BPF program is then passed a user_pt_regs structure. Note: Depending on future changes to the s390 pt_regs structure, consider the user_pt_regs structure to be stable for a particular kernel version only. (Of course, s390 tries to ensure keep it stable as much as possible.) Signed-off-by: NHendrik Brueckner <brueckner@linux.vnet.ibm.com> Reviewed-and-tested-by: NThomas Richter <tmricht@linux.vnet.ibm.com> Acked-by: NAlexei Starovoitov <ast@kernel.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: NDaniel Borkmann <daniel@iogearbox.net>
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由 Heiko Carstens 提交于
Martin Cermak reported that setting a uprobe doesn't work. Reason for this is that the common uprobes code tries to get an unmapped area at the last possible page within an address space. This broke with commit 1aea9b3f ("s390/mm: implement 5 level pages tables") which introduced an off-by-one bug which prevents to map anything at the last possible page within an address space. The check with the off-by-one bug however can be removed since with commit 8ab867cb ("s390/mm: fix BUG_ON in crst_table_upgrade") the necessary check is done at both call sites. Reported-by: NMartin Cermak <mcermak@redhat.com> Bisected-by: NThomas Richter <tmricht@linux.vnet.ibm.com> Fixes: 1aea9b3f ("s390/mm: implement 5 level pages tables") Cc: <stable@vger.kernel.org> # v4.13+ Reviewed-by: NHendrik Brueckner <brueckner@linux.vnet.ibm.com> Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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由 Martin Schwidefsky 提交于
More files under arch/s390 have been tagged with the SPDX identifier, a few of those files have a GPL license text. Remove the GPL text as it is no longer needed. Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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由 Martin Schwidefsky 提交于
Add the correct SPDX license to a few more files under arch/s390 and drivers/s390 which have been missed to far. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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由 Heiko Carstens 提交于
The switch_to() macro has an optimization to avoid saving and restoring register contents that aren't needed for kernel threads. There is however the possibility that a kernel thread execve's a user space program. In such a case the execve'd process can partially see the contents of the previous process, which shouldn't be allowed. To avoid this, simply always save and restore register contents on context switch. Cc: <stable@vger.kernel.org> # v2.6.37+ Fixes: fdb6d070 ("switch_to: dont restore/save access & fpu regs for kernel threads") Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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由 Michael S. Tsirkin 提交于
The original intent of the virtio header relicensing from 2008 was to make sure anyone can implement compatible devices/drivers. The virtio-ccw was omitted by mistake. We have an ack from the only contributor as well as the maintainer from IBM, so it's not too late to fix that. Make it dual-licensed with GPLv2, as the whole kernel is GPL2. Acked-by: NChristian Borntraeger <borntraeger@de.ibm.com> Acked-by: NCornelia Huck <cohuck@redhat.com> Signed-off-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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- 30 11月, 2017 2 次提交
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由 Dan Williams 提交于
The 'access_permitted' helper is used in the gup-fast path and goes beyond the simple _PAGE_RW check to also: - validate that the mapping is writable from a protection keys standpoint - validate that the pte has _PAGE_USER set since all fault paths where pud_write is must be referencing user-memory. [dan.j.williams@intel.com: fix powerpc compile error] Link: http://lkml.kernel.org/r/151129127237.37405.16073414520854722485.stgit@dwillia2-desk3.amr.corp.intel.com Link: http://lkml.kernel.org/r/151043110453.2842.2166049702068628177.stgit@dwillia2-desk3.amr.corp.intel.comSigned-off-by: NDan Williams <dan.j.williams@intel.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Dan Williams 提交于
In response to compile breakage introduced by a series that added the pud_write helper to x86, Stephen notes: did you consider using the other paradigm: In arch include files: #define pud_write pud_write static inline int pud_write(pud_t pud) ..... Then in include/asm-generic/pgtable.h: #ifndef pud_write tatic inline int pud_write(pud_t pud) { .... } #endif If you had, then the powerpc code would have worked ... ;-) and many of the other interfaces in include/asm-generic/pgtable.h are protected that way ... Given that some architecture already define pmd_write() as a macro, it's a net reduction to drop the definition of __HAVE_ARCH_PMD_WRITE. Link: http://lkml.kernel.org/r/151129126721.37405.13339850900081557813.stgit@dwillia2-desk3.amr.corp.intel.comSigned-off-by: NDan Williams <dan.j.williams@intel.com> Suggested-by: NStephen Rothwell <sfr@canb.auug.org.au> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com> Cc: Oliver OHalloran <oliveroh@au1.ibm.com> Cc: Chris Metcalf <cmetcalf@mellanox.com> Cc: Russell King <linux@armlinux.org.uk> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 29 11月, 2017 1 次提交
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由 Martin Schwidefsky 提交于
git commit e525f8a6 "s390/gs: add regset for the guarded storage broadcast control block" added the missing regset to the s390_regsets array but failed to add it to the s390_compat_regsets array. Fixes: e525f8a6 ("add compat regset for the guarded storage broadcast control block") Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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- 28 11月, 2017 1 次提交
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由 Jan H. Schönherr 提交于
KVM API says for the signal mask you set via KVM_SET_SIGNAL_MASK, that "any unblocked signal received [...] will cause KVM_RUN to return with -EINTR" and that "the signal will only be delivered if not blocked by the original signal mask". This, however, is only true, when the calling task has a signal handler registered for a signal. If not, signal evaluation is short-circuited for SIG_IGN and SIG_DFL, and the signal is either ignored without KVM_RUN returning or the whole process is terminated. Make KVM_SET_SIGNAL_MASK behave as advertised by utilizing logic similar to that in do_sigtimedwait() to avoid short-circuiting of signals. Signed-off-by: NJan H. Schönherr <jschoenh@amazon.de> Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
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- 24 11月, 2017 5 次提交
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由 Martin Schwidefsky 提交于
This reverts commit a73dc537. Reducing the base address for 31-bit PIE executables from (STACK_TOP/3)*2 to 4MB broke several compat programs which use -fpie to move the executable out of the lower 16MB. Cc: <stable@vger.kernel.org> # 4.13+ Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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由 Greg Kroah-Hartman 提交于
Now that the SPDX tag is in all arch/s390/ files, that identifies the license in a specific and legally-defined manner. So the extra GPL text wording in the remaining files can be removed as it is no longer needed at all. This is done on a quest to remove the 700+ different ways that files in the kernel describe the GPL license text. And there's unneeded stuff like the address (sometimes incorrect) for the FSF which is never needed. No copyright headers or other non-license-description text was removed. Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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由 Greg Kroah-Hartman 提交于
Now that the SPDX tag is in all arch/s390/crypto/ files, that identifies the license in a specific and legally-defined manner. So the extra GPL text wording can be removed as it is no longer needed at all. This is done on a quest to remove the 700+ different ways that files in the kernel describe the GPL license text. And there's unneeded stuff like the address (sometimes incorrect) for the FSF which is never needed. No copyright headers or other non-license-description text was removed. Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: "David S. Miller" <davem@davemloft.net> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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由 Greg Kroah-Hartman 提交于
Now that the SPDX tag is in all arch/s390/include/ files, that identifies the license in a specific and legally-defined manner. So the extra GPL text wording can be removed as it is no longer needed at all. This is done on a quest to remove the 700+ different ways that files in the kernel describe the GPL license text. And there's unneeded stuff like the address (sometimes incorrect) for the FSF which is never needed. No copyright headers or other non-license-description text was removed. Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Christian Borntraeger <borntraeger@de.ibm.com> Cc: Cornelia Huck <cohuck@redhat.com> Cc: Halil Pasic <pasic@linux.vnet.ibm.com> Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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由 Greg Kroah-Hartman 提交于
Now that the SPDX tag is in all arch/s390/kernel/ files, that identifies the license in a specific and legally-defined manner. So the extra GPL text wording can be removed as it is no longer needed at all. This is done on a quest to remove the 700+ different ways that files in the kernel describe the GPL license text. And there's unneeded stuff like the address (sometimes incorrect) for the FSF which is never needed. No copyright headers or other non-license-description text was removed. Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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