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* f2fs: simplify the way of calulating next nat addressFan Li2017-07-041-5/+1
| | | | | | | | | | The index of segment which the next nat block is in has only one different bit than the current one, so to get the next nat address, we can simply alter that one bit. Signed-off-by: Fan Li <fanofcode.li@samsung.com> Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: sanity check size of nat and sit cacheJin Qian2017-07-041-0/+7
| | | | | | | | | Make sure number of entires doesn't exceed max journal size. Cc: stable@vger.kernel.org Signed-off-by: Jin Qian <jinqian@android.com> Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: fix a panic caused by NULL flush_cmd_controlYunlei He2017-07-041-1/+4
| | | | | | | | | | | | | | Mount fs with option noflush_merge, boot failed for illegal address fcc in function f2fs_issue_flush: if (!test_opt(sbi, FLUSH_MERGE)) { ret = submit_flush_wait(sbi); atomic_inc(&fcc->issued_flush); -> Here, fcc illegal return ret; } Signed-off-by: Yunlei He <heyunlei@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: remove the unnecessary cast for PTR_ERRZhang Shengju2017-07-041-1/+1
| | | | | | | It's not necessary to specify 'int' casting for PTR_ERR. Signed-off-by: Zhang Shengju <zhangshengju@cmss.chinamobile.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: remove false-positive bug_onJaegeuk Kim2017-07-041-2/+3
| | | | | | | | | | | | | | | | | | For example, f2fs_create - new_node_page is failed - handle_failed_inode - skip to add it into orphan list, since ni.blk_addr == NULL_ADDR : set_inode_flag(inode, FI_FREE_NID) f2fs_evict_inode - EIO due to fault injection - f2fs_bug_on() is triggered So, we don't need to call f2fs_bug_on in this case. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: Do not issue small discards in LFS modeDamien Le Moal2017-07-041-1/+2
| | | | | | | | | | | | | clear_prefree_segments() issues small discards after discarding full segments. These small discards may not be section aligned, so not zone aligned on a zoned block device, causing __f2fs_iissue_discard_zone() to fail. Fix this by not issuing small discards for a volume mounted with the BLKZONED feature enabled. Cc: stable@vger.kernel.org Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com> Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: don't bother checking for encryption key in ->write_iter()Eric Biggers2017-05-241-5/+0
| | | | | | | | | | | | | | Since only an open file can be written to, and we only allow open()ing an encrypted file when its key is available, there is no need to check for the key again before permitting each ->write_iter(). This code was also broken in that it wouldn't actually have failed if the key was in fact unavailable. Signed-off-by: Eric Biggers <ebiggers@google.com> Reviewed-by: David Gstir <david@sigma-star.at> Acked-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: don't bother checking for encryption key in ->mmap()Eric Biggers2017-05-241-8/+0
| | | | | | | | | | | | | | Since only an open file can be mmap'ed, and we only allow open()ing an encrypted file when its key is available, there is no need to check for the key again before permitting each mmap(). This f2fs copy of this code was also broken in that it wouldn't actually have failed if the key was in fact unavailable. Signed-off-by: Eric Biggers <ebiggers@google.com> Reviewed-by: David Gstir <david@sigma-star.at> Acked-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: wait discard IO completion without cmd_lock heldChao Yu2017-05-241-3/+20
| | | | | | | | Wait discard IO completion outside cmd_lock to avoid long latency of holding cmd_lock in IO busy scenario. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: wake up all waiters in f2fs_submit_discard_endioChao Yu2017-05-241-1/+1
| | | | | | | | | | | | There could be more than one waiter waiting discard IO completion, so we need use complete_all() instead of complete() in f2fs_submit_discard_endio to avoid hungtask. Fixes: ec9895add2c5 ("f2fs: don't hold cmd_lock during waiting discard command") Cc: <stable@vger.kernel.org> Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: show more info if fail to issue discardChao Yu2017-05-241-1/+2
| | | | | Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: introduce io_list for serialize data/node IOsChao Yu2017-05-246-13/+46
| | | | | | | | | Serialize data/node IOs by using fifo list instead of mutex lock, it will help to enhance concurrency of f2fs, meanwhile keeping LFS IO semantics. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: split wio_mutexChao Yu2017-05-243-6/+8
| | | | | | | Split wio_mutex to adjust different temperature bio cache. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: combine huge num of discard rb tree consistence checksYunlei He2017-05-241-11/+2
| | | | | | | | | Came across a hungtask caused by huge number of rb tree traversing during adding discard addrs in cp. This patch combine these consistence checks and move it to discard thread. Signed-off-by: Yunlei He <heyunlei@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: fix a bug caused by NULL extent treeYunlei He2017-05-241-1/+11
| | | | | | | | | | | | | | | | | | | | | Thread A: Thread B: -f2fs_remount -sbi->mount_opt.opt = 0; <--- -f2fs_iget -do_read_inode -f2fs_init_extent_tree -F2FS_I(inode)->extent_tree is NULL -default_options && parse_options -remount return <--- -f2fs_map_blocks -f2fs_lookup_extent_tree -f2fs_bug_on(sbi, !et); The same problem with f2fs_new_inode. Signed-off-by: Yunlei He <heyunlei@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: try to freeze in gc and discard threadsJaegeuk Kim2017-05-242-13/+21
| | | | | | | This allows to freeze gc and discard threads. Cc: stable@vger.kernel.org Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: add a new function get_ssr_costYunlei He2017-05-241-1/+10
| | | | | | | | This patch add a new method get_ssr_cost to select SSR segment more accurately. Signed-off-by: Yunlei He <heyunlei@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: declare load_free_nid_bitmap staticHou Pengyang2017-05-241-1/+1
| | | | | Signed-off-by: Hou Pengyang <houpengyang@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: avoid f2fs_lock_op for IPU writesJaegeuk Kim2017-05-244-16/+45
| | | | | | | | | | | | | | | Currently, if we do get_node_of_data before f2fs_lock_op, there may be dead lock as follows, where process A would be in infinite loop, and B will NOT be awaked. Process A(cp): Process B: f2fs_lock_all(sbi) get_dnode_of_data <---- lock dn.node_page flush_nodes f2fs_lock_op So, this patch adds f2fs_trylock_op to avoid f2fs_lock_op done by IPU. Signed-off-by: Hou Pengyang <houpengyang@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: split bio cacheJaegeuk Kim2017-05-247-29/+103
| | | | | | | | | | Split DATA/NODE type bio cache according to different temperature, so write IOs with the same temperature can be merged in corresponding bio cache as much as possible, otherwise, different temperature write IOs submitting into one bio cache will always cause split of bio. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: use fio instead of multiple parametersJaegeuk Kim2017-05-241-20/+21
| | | | | | This patch just changes using fio instead of parameters. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: remove unnecessary read cases in merged IO flowJaegeuk Kim2017-05-248-65/+51
| | | | | | | | | | Merged IO flow doesn't need to care about read IOs. f2fs_submit_merged_bio -> f2fs_submit_merged_write f2fs_submit_merged_bios -> f2fs_submit_merged_writes f2fs_submit_merged_bio_cond -> f2fs_submit_merged_write_cond Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: use f2fs_submit_page_bio for ra_meta_pagesJaegeuk Kim2017-05-241-3/+1
| | | | | | | This patch avoids to use f2fs_submit_merged_bio for read, which was the only read case. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: make sure f2fs_gc returns consistent errnoWeichao Guo2017-05-241-2/+5
| | | | | | | | | By default, f2fs_gc returns -EINVAL in general error cases, e.g., no victim was selected. However, the default errno may be overwritten in two cases: gc_more and BG_GC -> FG_GC. We should return consistent errno in such cases. Signed-off-by: Weichao Guo <guoweichao@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: support statxChao Yu2017-05-241-1/+22
| | | | | | | | | | | | Last kernel has already support new syscall statx() in commit a528d35e8bfc ("statx: Add a system call to make enhanced file info available"), with this interface we can show more file info including file creation and some attribute flags to user. This patch tries to support this functionality. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: load inode's flag from diskJaegeuk Kim2017-05-242-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | This patch fixes missing inode flag loaded from disk, reported by Tom. [tom@localhost ~]$ sudo mount /dev/loop0 /mnt/ [tom@localhost ~]$ sudo chown tom:tom /mnt/ [tom@localhost ~]$ touch /mnt/testfile [tom@localhost ~]$ sudo chattr +i /mnt/testfile [tom@localhost ~]$ echo test > /mnt/testfile bash: /mnt/testfile: Operation not permitted [tom@localhost ~]$ rm /mnt/testfile rm: cannot remove '/mnt/testfile': Operation not permitted [tom@localhost ~]$ sudo umount /mnt/ [tom@localhost ~]$ sudo mount /dev/loop0 /mnt/ [tom@localhost ~]$ lsattr /mnt/testfile ----i-------------- /mnt/testfile [tom@localhost ~]$ echo test > /mnt/testfile [tom@localhost ~]$ rm /mnt/testfile [tom@localhost ~]$ sudo umount /mnt/ Cc: stable@vger.kernel.org Reported-by: Tom Yan <tom.ty89@outlook.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: sanity check checkpoint segno and blkoffJin Qian2017-05-161-0/+16
| | | | | | | | | Make sure segno and blkoff read from raw image are valid. Cc: stable@vger.kernel.org Signed-off-by: Jin Qian <jinqian@google.com> [Jaegeuk Kim: adjust minor coding style] Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds2017-05-08150-3843/+9189
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull KVM updates from Paolo Bonzini: "ARM: - HYP mode stub supports kexec/kdump on 32-bit - improved PMU support - virtual interrupt controller performance improvements - support for userspace virtual interrupt controller (slower, but necessary for KVM on the weird Broadcom SoCs used by the Raspberry Pi 3) MIPS: - basic support for hardware virtualization (ImgTec P5600/P6600/I6400 and Cavium Octeon III) PPC: - in-kernel acceleration for VFIO s390: - support for guests without storage keys - adapter interruption suppression x86: - usual range of nVMX improvements, notably nested EPT support for accessed and dirty bits - emulation of CPL3 CPUID faulting generic: - first part of VCPU thread request API - kvm_stat improvements" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (227 commits) kvm: nVMX: Don't validate disabled secondary controls KVM: put back #ifndef CONFIG_S390 around kvm_vcpu_kick Revert "KVM: Support vCPU-based gfn->hva cache" tools/kvm: fix top level makefile KVM: x86: don't hold kvm->lock in KVM_SET_GSI_ROUTING KVM: Documentation: remove VM mmap documentation kvm: nVMX: Remove superfluous VMX instruction fault checks KVM: x86: fix emulation of RSM and IRET instructions KVM: mark requests that need synchronization KVM: return if kvm_vcpu_wake_up() did wake up the VCPU KVM: add explicit barrier to kvm_vcpu_kick KVM: perform a wake_up in kvm_make_all_cpus_request KVM: mark requests that do not need a wakeup KVM: remove #ifndef CONFIG_S390 around kvm_vcpu_wake_up KVM: x86: always use kvm_make_request instead of set_bit KVM: add kvm_{test,clear}_request to replace {test,clear}_bit s390: kvm: Cpu model support for msa6, msa7 and msa8 KVM: x86: remove irq disablement around KVM_SET_CLOCK/KVM_GET_CLOCK kvm: better MWAIT emulation for guests KVM: x86: virtualize cpuid faulting ...
| * kvm: nVMX: Don't validate disabled secondary controlsJim Mattson2017-05-051-3/+4
| | | | | | | | | | | | | | | | | | According to the SDM, if the "activate secondary controls" primary processor-based VM-execution control is 0, no checks are performed on the secondary processor-based VM-execution controls. Signed-off-by: Jim Mattson <jmattson@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
| * KVM: put back #ifndef CONFIG_S390 around kvm_vcpu_kickPaolo Bonzini2017-05-041-0/+2
| | | | | | | | | | | | | | | | | | The #ifndef was removed in 75aaafb79f73516b69d5639ad30a72d72e75c8b4, but it was also protecting smp_send_reschedule() in kvm_vcpu_kick(). Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Radim Krčmář <rkrcmar@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
| * Revert "KVM: Support vCPU-based gfn->hva cache"Paolo Bonzini2017-05-034-55/+58
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This reverts commit bbd6411513aa8ef3ea02abab61318daf87c1af1e. I've been sitting on this revert for too long and it unfortunately missed 4.11. It's also the reason why I haven't merged ring-based dirty tracking for 4.12. Using kvm_vcpu_memslots in kvm_gfn_to_hva_cache_init and kvm_vcpu_write_guest_offset_cached means that the MSR value can now be used to access SMRAM, simply by making it point to an SMRAM physical address. This is problematic because it lets the guest OS overwrite memory that it shouldn't be able to touch. Cc: stable@vger.kernel.org Fixes: bbd6411513aa8ef3ea02abab61318daf87c1af1e Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
| * tools/kvm: fix top level makefileJustin M. Forbes2017-05-031-1/+4
| | | | | | | | | | | | | | | | The top level tools/Makefile includes kvm_stat as a target in help, but the actual target is missing. Signed-off-by: Justin M. Forbes <jforbes@fedoraproject.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
| * KVM: x86: don't hold kvm->lock in KVM_SET_GSI_ROUTINGDavid Hildenbrand2017-05-027-21/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We needed the lock to avoid racing with creation of the irqchip on x86. As kvm_set_irq_routing() calls srcu_synchronize_expedited(), this lock might be held for a longer time. Let's introduce an arch specific callback to check if we can actually add irq routes. For x86, all we have to do is check if we have an irqchip in the kernel. We don't need kvm->lock at that point as the irqchip is marked as inititalized only when actually fully created. Reported-by: Steve Rutherford <srutherford@google.com> Reviewed-by: Radim Krčmář <rkrcmar@redhat.com> Fixes: 1df6ddede10a ("KVM: x86: race between KVM_SET_GSI_ROUTING and KVM_CREATE_IRQCHIP") Signed-off-by: David Hildenbrand <david@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
| * KVM: Documentation: remove VM mmap documentationJann Horn2017-04-281-5/+1
| | | | | | | | | | | | | | | | Since commit 80f5b5e700fa9c ("KVM: remove vm mmap method"), the VM mmap handler is gone. Remove the corresponding documentation. Signed-off-by: Jann Horn <jannh@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
| * Merge tag 'kvm-arm-for-v4.12' of ↵Paolo Bonzini2017-04-2750-938/+1174
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD KVM/ARM Changes for v4.12. Changes include: - Using the common sysreg definitions between KVM and arm64 - Improved hyp-stub implementation with support for kexec and kdump on the 32-bit side - Proper PMU exception handling - Performance improvements of our GIC handling - Support for irqchip in userspace with in-kernel arch-timers and PMU support - A fix for a race condition in our PSCI code Conflicts: Documentation/virtual/kvm/api.txt include/uapi/linux/kvm.h
| | * ARM: KVM: Fix idmap stub entry when running Thumb-2 codeMarc Zyngier2017-04-201-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When entering the hyp stub implemented in the idmap, we try to be mindful of the fact that we could be running a Thumb-2 kernel by adding 1 to the address we compute. Unfortunately, the assembler also knows about this trick, and has already generated an address that has bit 0 set in the litteral pool. Our superfluous correction ends up confusing the CPU entierely, as we now branch to the stub in ARM mode instead of Thumb, and on a possibly unaligned address for good measure. From that point, nothing really good happens. The obvious fix in to remove this stupid target PC correction. Fixes: 6bebcecb6c5b ("ARM: KVM: Allow the main HYP code to use the init hyp stub implementation") Reported-by: Christoffer Dall <cdall@linaro.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Christoffer Dall <cdall@linaro.org>
| | * ARM: hyp-stub: Fix Thumb-2 compilationMarc Zyngier2017-04-201-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The assembler defaults to emiting the short form of ADR, leading to an out-of-range immediate. Using the wide version solves this issue. Fixes: bc845e4fbbbb ("ARM: KVM: Implement HVC_RESET_VECTORS stub hypercall in the init code") Reported-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Christoffer Dall <cdall@linaro.org>
| | * KVM: arm/arm64: vgic-v3: Fix off-by-one LR accessMarc Zyngier2017-04-191-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | When iterating over the used LRs, be careful not to try to access an unused LR, or even an unimplemented one if you're unlucky... Reviewed-by: Christoffer Dall <cdall@linaro.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Christoffer Dall <cdall@linaro.org>
| | * KVM: arm/arm64: vgic-v3: De-optimize VMCR save/restore when emulating a GICv2Marc Zyngier2017-04-192-4/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When emulating a GICv2-on-GICv3, special care must be taken to only save/restore VMCR_EL2 when ICC_SRE_EL1.SRE is cleared. Otherwise, all Group-0 interrupts end-up being delivered as FIQ, which is probably not what the guest expects, as demonstrated here with an unhappy EFI: FIQ Exception at 0x000000013BD21CC4 This means that we cannot perform the load/put trick when dealing with VMCR_EL2 (because the host has SRE set), and we have to deal with it in the world-switch. Fortunately, this is not the most common case (modern guests should be able to deal with GICv3 directly), and the performance is not worse than what it was before the VMCR optimization. Reviewed-by: Christoffer Dall <cdall@linaro.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Christoffer Dall <cdall@linaro.org>
| | * KVM: arm/arm64: fix races in kvm_psci_vcpu_onAndrew Jones2017-04-191-1/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix potential races in kvm_psci_vcpu_on() by taking the kvm->lock mutex. In general, it's a bad idea to allow more than one PSCI_CPU_ON to process the same target VCPU at the same time. One such problem that may arise is that one PSCI_CPU_ON could be resetting the target vcpu, which fills the entire sys_regs array with a temporary value including the MPIDR register, while another looks up the VCPU based on the MPIDR value, resulting in no target VCPU found. Resolves both races found with the kvm-unit-tests/arm/psci unit test. Reviewed-by: Marc Zyngier <marc.zyngier@arm.com> Reviewed-by: Christoffer Dall <cdall@linaro.org> Reported-by: Levente Kurusa <lkurusa@redhat.com> Suggested-by: Christoffer Dall <cdall@linaro.org> Signed-off-by: Andrew Jones <drjones@redhat.com> Cc: stable@vger.kernel.org Signed-off-by: Christoffer Dall <cdall@linaro.org>
| | * Merge remote-tracking branch 'rutland/kvm/common-sysreg' into next-fixChristoffer Dall2017-04-096-334/+284
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| | | * KVM: arm64: Use common Set/Way sys definitionsMark Rutland2017-03-221-9/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now that we have common definitions for the encoding of Set/Way cache maintenance operations, make the KVM code use these, simplifying the sys_reg_descs table. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Acked-by: Christoffer Dall <christoffer.dall@linaro.org> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: kvmarm@lists.cs.columbia.edu
| | | * KVM: arm64: Use common sysreg definitionsMark Rutland2017-03-222-73/+25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now that we have common definitions for the remaining register encodings required by KVM, make the KVM code use these, simplifying the sys_reg_descs table and the genericv8_sys_regs table. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Acked-by: Christoffer Dall <christoffer.dall@linaro.org> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: kvmarm@lists.cs.columbia.edu
| | | * KVM: arm64: use common invariant sysreg definitionsMark Rutland2017-03-221-38/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now that we have common definitions for the register encodings used by KVM, make the KVM code uses thse for invariant sysreg definitions. This makes said definitions a reasonable amount shorter, especially as many comments are rendered redundant and can be removed. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Acked-by: Christoffer Dall <christoffer.dall@linaro.org> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: kvmarm@lists.cs.columbia.edu
| | | * KVM: arm64: Use common physical timer sysreg definitionsMark Rutland2017-03-221-9/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now that we have common definitions for the physical timer control registers, make the KVM code use these, simplifying the sys_reg_descs table. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Acked-by: Christoffer Dall <christoffer.dall@linaro.org> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: kvmarm@lists.cs.columbia.edu
| | | * KVM: arm64: Use common GICv3 sysreg definitionsMark Rutland2017-03-221-6/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now that we have common definitions for the GICv3 register encodings, make the KVM code use these, simplifying the sys_reg_descs table. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Acked-by: Christoffer Dall <christoffer.dall@linaro.org> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: kvmarm@lists.cs.columbia.edu
| | | * KVM: arm64: Use common performance monitor sysreg definitionsMark Rutland2017-03-221-56/+22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now that we have common definitions for the performance monitor register encodings, make the KVM code use these, simplifying the sys_reg_descs table. The comments for PMUSERENR_EL0 and PMCCFILTR_EL0 are kept, as these describe non-obvious details regarding the registers. However, a slight fixup is applied to bring these into line with the usual comment style. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Acked-by: Christoffer Dall <christoffer.dall@linaro.org> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: kvmarm@lists.cs.columbia.edu
| | | * KVM: arm64: Use common debug sysreg definitionsMark Rutland2017-03-221-52/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now that we have common definitions for the debug register encodings, make the KVM code use these, simplifying the sys_reg_descs table. The table previously erroneously referred to MDCCSR_EL0 as MDCCSR_EL1. This is corrected (as is necessary in order to use the common sysreg definition). Signed-off-by: Mark Rutland <mark.rutland@arm.com> Acked-by: Christoffer Dall <christoffer.dall@linaro.org> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: kvmarm@lists.cs.columbia.edu
| | | * KVM: arm64: add SYS_DESC()Mark Rutland2017-03-221-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds a macro enabling us to initialise sys_reg_desc structures based on common sysreg encoding definitions in <asm/sysreg.h>. Subsequent patches will use this to simplify the KVM code. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Acked-by: Christoffer Dall <christoffer.dall@linaro.org> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: kvmarm@lists.cs.columbia.edu
| | * | KVM: arm/arm64: Advertise support for KVM_CAP_ARM_USER_IRQChristoffer Dall2017-04-091-0/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now that we support both timers and PMU reporting interrupts to userspace, we can advertise this support. Reviewed-by: Alexander Graf <agraf@suse.de> Reviewed-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
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