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* Merge tag 'kconfig-v4.21' of ↵Linus Torvalds2018-12-291-1/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kconfig updates from Masahiro Yamada: - support -y option for merge_config.sh to avoid downgrading =y to =m - remove S_OTHER symbol type, and touch include/config/*.h files correctly - fix file name and line number in lexer warnings - fix memory leak when EOF is encountered in quotation - resolve all shift/reduce conflicts of the parser - warn no new line at end of file - make 'source' statement more strict to take only string literal - rewrite the lexer and remove the keyword lookup table - convert to SPDX License Identifier - compile C files independently instead of including them from zconf.y - fix various warnings of gconfig - misc cleanups * tag 'kconfig-v4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (39 commits) kconfig: surround dbg_sym_flags with #ifdef DEBUG to fix gconf warning kconfig: split images.c out of qconf.cc/gconf.c to fix gconf warnings kconfig: add static qualifiers to fix gconf warnings kconfig: split the lexer out of zconf.y kconfig: split some C files out of zconf.y kconfig: convert to SPDX License Identifier kconfig: remove keyword lookup table entirely kconfig: update current_pos in the second lexer kconfig: switch to ASSIGN_VAL state in the second lexer kconfig: stop associating kconf_id with yylval kconfig: refactor end token rules kconfig: stop supporting '.' and '/' in unquoted words treewide: surround Kconfig file paths with double quotes microblaze: surround string default in Kconfig with double quotes kconfig: use T_WORD instead of T_VARIABLE for variables kconfig: use specific tokens instead of T_ASSIGN for assignments kconfig: refactor scanning and parsing "option" properties kconfig: use distinct tokens for type and default properties kconfig: remove redundant token defines kconfig: rename depends_list to comment_option_list ...
| * treewide: surround Kconfig file paths with double quotesMasahiro Yamada2018-12-211-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The Kconfig lexer supports special characters such as '.' and '/' in the parameter context. In my understanding, the reason is just to support bare file paths in the source statement. I do not see a good reason to complicate Kconfig for the room of ambiguity. The majority of code already surrounds file paths with double quotes, and it makes sense since file paths are constant string literals. Make it treewide consistent now. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Wolfram Sang <wsa@the-dreams.de> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Ingo Molnar <mingo@kernel.org>
* | Merge tag 'kvm-s390-next-4.21-1' of ↵Paolo Bonzini2018-12-191-7/+17
|\ \ | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into HEAD KVM: s390: Fixes for 4.21 Just two small fixes.
| * | KVM: s390: fix kmsg component kvm-s390Michael Mueller2018-12-181-4/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | Relocate #define statement for kvm related kernel messages before the include of printk to become effective. Signed-off-by: Michael Mueller <mimu@linux.ibm.com> Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
| * | KVM: s390: unregister debug feature on failing arch initMichael Mueller2018-12-181-3/+14
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | Make sure the debug feature and its allocated resources get released upon unsuccessful architecture initialization. A related indication of the issue will be reported as kernel message. Signed-off-by: Michael Mueller <mimu@linux.ibm.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Reviewed-by: Pierre Morel <pmorel@linux.ibm.com> Reviewed-by: David Hildenbrand <david@redhat.com> Message-Id: <20181130143215.69496-2-mimu@linux.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
* / kvm: make KVM_CAP_ENABLE_CAP_VM architecture agnosticPaolo Bonzini2018-12-141-10/+1
|/ | | | | | | The first such capability to be handled in virt/kvm/ will be manual dirty page reprotection. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* Merge tag 'kvm-s390-next-4.20-2' of ↵Paolo Bonzini2018-10-131-4/+53
|\ | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into HEAD KVM: s390/vfio-ap: Fixes and enhancements for vfio-ap - add tracing - fix a locking bug - make local functions and data static
| * Merge branch 'apv11' of ↵Christian Borntraeger2018-10-081-4/+53
| |\ | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into kernelorgnext
| | * KVM: s390: Tracing APCB changesPierre Morel2018-10-051-0/+41
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | kvm_arch_crypto_set_masks is a new function to centralize the setup the APCB masks inside the CRYCB SIE satellite. To trace APCB mask changes, we add KVM_EVENT() tracing to both kvm_arch_crypto_set_masks and kvm_arch_crypto_clear_masks. Signed-off-by: Pierre Morel <pmorel@linux.ibm.com> Message-Id: <1538728270-10340-2-git-send-email-pmorel@linux.ibm.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
| | * KVM: s390: fix locking for crypto setting error pathChristian Borntraeger2018-10-051-4/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We need to unlock the kvm->lock mutex in the error case. Reported-by: smatch Fixes: 37940fb0b6a2c4bf101 ("KVM: s390: device attrs to enable/disable AP interpretation") Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Reviewed-by: Janosch Frank <frankja@linux.ibm.com> Reviewed-by: Pierre Morel <pmorel@linux.ibm.com> Reviewed-by: David Hildenbrand <david@redhat.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
* | | Merge tag 'kvm-s390-next-4.20-1' of ↵Paolo Bonzini2018-10-043-60/+286
|\| | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into HEAD KVM: s390: Features for 4.20 - Initial version of AP crypto virtualization via vfio-mdev - Set the host program identifier - Optimize page table locking
| * | Merge branch 'apv11' of ↵Christian Borntraeger2018-10-013-60/+282
| |\| | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into kernelorgnext
| | * KVM: s390: device attrs to enable/disable AP interpretationTony Krowiak2018-09-281-3/+27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Introduces two new VM crypto device attributes (KVM_S390_VM_CRYPTO) to enable or disable AP instruction interpretation from userspace via the KVM_SET_DEVICE_ATTR ioctl: * The KVM_S390_VM_CRYPTO_ENABLE_APIE attribute enables hardware interpretation of AP instructions executed on the guest. * The KVM_S390_VM_CRYPTO_DISABLE_APIE attribute disables hardware interpretation of AP instructions executed on the guest. In this case the instructions will be intercepted and pass through to the guest. Signed-off-by: Tony Krowiak <akrowiak@linux.ibm.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Message-Id: <20180925231641.4954-25-akrowiak@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
| | * KVM: s390: vsie: allow guest FORMAT-0 CRYCB on host FORMAT-2Pierre Morel2018-09-281-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When the guest schedules a SIE with a FORMAT-0 CRYCB, we are able to schedule it in the host with a FORMAT-2 CRYCB if the host uses FORMAT-2 Signed-off-by: Pierre Morel <pmorel@linux.ibm.com> Signed-off-by: Tony Krowiak <akrowiak@linux.ibm.com> Message-Id: <20180925231641.4954-24-akrowiak@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
| | * KVM: s390: vsie: allow guest FORMAT-1 CRYCB on host FORMAT-2Pierre Morel2018-09-281-5/+28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When the guest schedules a SIE with a CRYCB FORMAT-1 CRYCB, we are able to schedule it in the host with a FORMAT-2 CRYCB if the host uses FORMAT-2. Signed-off-by: Pierre Morel <pmorel@linux.ibm.com> Signed-off-by: Tony Krowiak <akrowiak@linux.ibm.com> Message-Id: <20180925231641.4954-23-akrowiak@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
| | * KVM: s390: vsie: allow guest FORMAT-0 CRYCB on host FORMAT-1Pierre Morel2018-09-281-4/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When the guest schedules a SIE with a FORMAT-0 CRYCB, we are able to schedule it in the host with a FORMAT-1 CRYCB if the host uses FORMAT-1 or FORMAT-0. Signed-off-by: Pierre Morel <pmorel@linux.ibm.com> Signed-off-by: Tony Krowiak <akrowiak@linux.ibm.com> Message-Id: <20180925231641.4954-22-akrowiak@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
| | * KVM: s390: vsie: allow CRYCB FORMAT-0Pierre Morel2018-09-281-3/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When the host and the guest both use a FORMAT-0 CRYCB, we copy the guest's FORMAT-0 APCB to a shadow CRYCB for use by vSIE. Signed-off-by: Pierre Morel <pmorel@linux.ibm.com> Signed-off-by: Tony Krowiak <akrowiak@linux.ibm.com> Message-Id: <20180925231641.4954-21-akrowiak@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
| | * KVM: s390: vsie: allow CRYCB FORMAT-1Pierre Morel2018-09-281-0/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When the host and guest both use a FORMAT-1 CRYCB, we copy the guest's FORMAT-0 APCB to a shadow CRYCB for use by vSIE. Signed-off-by: Pierre Morel <pmorel@linux.ibm.com> Signed-off-by: Tony Krowiak <akrowiak@linux.ibm.com> Message-Id: <20180925231641.4954-20-akrowiak@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
| | * KVM: s390: vsie: Allow CRYCB FORMAT-2Pierre Morel2018-09-281-10/+104
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When the guest and the host both use CRYCB FORMAT-2, we copy the guest's FORMAT-1 APCB to a FORMAT-1 shadow APCB. This patch also cleans up the shadow_crycb() function. Signed-off-by: Pierre Morel <pmorel@linux.ibm.com> Signed-off-by: Tony Krowiak <akrowiak@linux.ibm.com> Message-Id: <20180925231641.4954-19-akrowiak@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
| | * KVM: s390: vsie: Make use of CRYCB FORMAT2 clearPierre Morel2018-09-281-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The comment preceding the shadow_crycb function is misleading, we effectively accept FORMAT2 CRYCB in the guest. When using FORMAT2 in the host we do not need to or with FORMAT1. Signed-off-by: Pierre Morel <pmorel@linux.ibm.com> Signed-off-by: Tony Krowiak <akrowiak@linux.ibm.com> Reviewed-by: Janosch Frank <frankja@linux.ibm.com> Reviewed-by: David Hildenbrand <david@redhat.com> Message-Id: <20180925231641.4954-18-akrowiak@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
| | * KVM: s390: vsie: Do the CRYCB validation firstPierre Morel2018-09-281-5/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We need to handle the validity checks for the crycb, no matter what the settings for the keywrappings are. So lets move the keywrapping checks after we have done the validy checks. Signed-off-by: Pierre Morel <pmorel@linux.ibm.com> Signed-off-by: Tony Krowiak <akrowiak@linux.ibm.com> Reviewed-by: Janosch Frank <frankja@linux.ibm.com> Reviewed-by: David Hildenbrand <david@redhat.com> Message-Id: <20180925231641.4954-17-akrowiak@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
| | * KVM: s390: Clear Crypto Control Block when using vSIEPierre Morel2018-09-281-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When we clear the Crypto Control Block (CRYCB) used by a guest level 2, the vSIE shadow CRYCB for guest level 3 must be updated before the guest uses it. We achieve this by using the KVM_REQ_VSIE_RESTART synchronous request for each vCPU belonging to the guest to force the reload of the shadow CRYCB before rerunning the guest level 3. Signed-off-by: Pierre Morel <pmorel@linux.ibm.com> Signed-off-by: Tony Krowiak <akrowiak@linux.ibm.com> Message-Id: <20180925231641.4954-16-akrowiak@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
| | * KVM: s390: interface to clear CRYCB masksTony Krowiak2018-09-261-0/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Introduces a new KVM function to clear the APCB0 and APCB1 in the guest's CRYCB. This effectively clears all bits of the APM, AQM and ADM masks configured for the guest. The VCPUs are taken out of SIE to ensure the VCPUs do not get out of sync. Signed-off-by: Tony Krowiak <akrowiak@linux.ibm.com> Acked-by: Halil Pasic <pasic@linux.ibm.com> Tested-by: Michael Mueller <mimu@linux.ibm.com> Tested-by: Farhan Ali <alifm@linux.ibm.com> Tested-by: Pierre Morel <pmorel@linux.ibm.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Message-Id: <20180925231641.4954-11-akrowiak@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
| | * KVM: s390: refactor crypto initializationTony Krowiak2018-09-261-37/+33
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch refactors the code that initializes and sets up the crypto configuration for a guest. The following changes are implemented via this patch: 1. Introduces a flag indicating AP instructions executed on the guest shall be interpreted by the firmware. This flag is used to set a bit in the guest's state description indicating AP instructions are to be interpreted. 2. Replace code implementing AP interfaces with code supplied by the AP bus to query the AP configuration. Signed-off-by: Tony Krowiak <akrowiak@linux.ibm.com> Reviewed-by: Halil Pasic <pasic@linux.ibm.com> Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> Acked-by: Janosch Frank <frankja@linux.ibm.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Tested-by: Michael Mueller <mimu@linux.ibm.com> Tested-by: Farhan Ali <alifm@linux.ibm.com> Message-Id: <20180925231641.4954-4-akrowiak@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
| | * KVM: s390: introduce and use KVM_REQ_VSIE_RESTARTDavid Hildenbrand2018-09-261-1/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When we change the crycb (or execution controls), we also have to make sure that the vSIE shadow datastructures properly consider the changed values before rerunning the vSIE. We can achieve that by simply using a VCPU request now. This has to be a synchronous request (== handled before entering the (v)SIE again). The request will make sure that the vSIE handler is left, and that the request will be processed (NOP), therefore forcing a reload of all vSIE data (including rebuilding the crycb) when re-entering the vSIE interception handler the next time. Signed-off-by: David Hildenbrand <david@redhat.com> Signed-off-by: Tony Krowiak <akrowiak@linux.ibm.com> Reviewed-by: Pierre Morel <pmorel@linux.ibm.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Reviewed-by: Janosch Frank <frankja@linux.ibm.com> Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> Message-Id: <20180925231641.4954-3-akrowiak@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
| | * KVM: s390: vsie: simulate VCPU SIE entry/exitDavid Hildenbrand2018-09-263-5/+26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | VCPU requests and VCPU blocking right now don't take care of the vSIE (as it was not necessary until now). But we want to have synchronous VCPU requests that will also be handled before running the vSIE again. So let's simulate a SIE entry of the VCPU when calling the sie during vSIE handling and check for PROG_ flags. The existing infrastructure (e.g. exit_sie()) will then detect that the SIE (in form of the vSIE) is running and properly kick the vSIE CPU, resulting in it leaving the vSIE loop and therefore the vSIE interception handler, allowing it to handle VCPU requests. E.g. if we want to modify the crycb of the VCPU and make sure that any masks also get applied to the VSIE crycb shadow (which uses masks from the VCPU crycb), we will need a way to hinder the vSIE from running and make sure to process the updated crycb before reentering the vSIE again. Signed-off-by: David Hildenbrand <david@redhat.com> Signed-off-by: Tony Krowiak <akrowiak@linux.ibm.com> Reviewed-by: Pierre Morel <pmorel@linux.ibm.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Reviewed-by: Janosch Frank <frankja@linux.ibm.com> Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> Message-Id: <20180925231641.4954-2-akrowiak@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
| * | KVM: s390: set host program identifierCollin Walling2018-10-012-0/+4
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | A host program identifier (HPID) provides information regarding the underlying host environment. A level-2 (VM) guest will have an HPID denoting Linux/KVM, which is set during VCPU setup. A level-3 (VM on a VM) and beyond guest will have an HPID denoting KVM vSIE, which is set for all shadow control blocks, overriding the original value of the HPID. Signed-off-by: Collin Walling <walling@linux.ibm.com> Reviewed-by: Janosch Frank <frankja@linux.ibm.com> Message-Id: <1535734279-10204-4-git-send-email-walling@linux.ibm.com> Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
* / KVM: s390: Make huge pages unavailable in ucontrol VMsJanosch Frank2018-09-121-2/+2
|/ | | | | | | | | | | | | | | | | | | | We currently do not notify all gmaps when using gmap_pmdp_xchg(), due to locking constraints. This makes ucontrol VMs, which is the only VM type that creates multiple gmaps, incompatible with huge pages. Also we would need to hold the guest_table_lock of all gmaps that have this vmaddr maped to synchronize access to the pmd. ucontrol VMs are rather exotic and creating a new locking concept is no easy task. Hence we return EINVAL when trying to active KVM_CAP_S390_HPAGE_1M and report it as being not available when checking for it. Fixes: a4499382 ("KVM: s390: Add huge page enablement control") Signed-off-by: Janosch Frank <frankja@linux.ibm.com> Reviewed-by: David Hildenbrand <david@redhat.com> Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com> Message-Id: <20180801112508.138159-1-frankja@linux.ibm.com> Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
* KVM: s390: Properly lock mm context allow_gmap_hpage_1m settingJanosch Frank2018-09-041-0/+2
| | | | | | | | | | We have to do down_write on the mm semaphore to set a bitfield in the mm context. Signed-off-by: Janosch Frank <frankja@linux.ibm.com> Fixes: a4499382 ("KVM: s390: Add huge page enablement control") Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
* KVM: s390: vsie: copy wrapping keys to right placePierre Morel2018-09-041-1/+2
| | | | | | | | | | | | | | Copy the key mask to the right offset inside the shadow CRYCB Fixes: bbeaa58b3 ("KVM: s390: vsie: support aes dea wrapping keys") Signed-off-by: Pierre Morel <pmorel@linux.ibm.com> Reviewed-by: David Hildenbrand <david@redhat.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Reviewed-by: Janosch Frank <frankja@linux.ibm.com> Cc: stable@vger.kernel.org # v4.8+ Message-Id: <1535019956-23539-2-git-send-email-pmorel@linux.ibm.com> Signed-off-by: Janosch Frank <frankja@linux.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
* KVM: s390: Fix pfmf and conditional skey emulationJanosch Frank2018-09-041-12/+18
| | | | | | | | | | | We should not return with a lock. We also have to increase the address when we do page clearing. Fixes: bd096f644319 ("KVM: s390: Add skey emulation fault handling") Signed-off-by: Janosch Frank <frankja@linux.ibm.com> Message-Id: <20180830081355.59234-1-frankja@linux.ibm.com> Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
* Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds2018-08-193-139/+213
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull first set of KVM updates from Paolo Bonzini: "PPC: - minor code cleanups x86: - PCID emulation and CR3 caching for shadow page tables - nested VMX live migration - nested VMCS shadowing - optimized IPI hypercall - some optimizations ARM will come next week" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (85 commits) kvm: x86: Set highest physical address bits in non-present/reserved SPTEs KVM/x86: Use CC_SET()/CC_OUT in arch/x86/kvm/vmx.c KVM: X86: Implement PV IPIs in linux guest KVM: X86: Add kvm hypervisor init time platform setup callback KVM: X86: Implement "send IPI" hypercall KVM/x86: Move X86_CR4_OSXSAVE check into kvm_valid_sregs() KVM: x86: Skip pae_root shadow allocation if tdp enabled KVM/MMU: Combine flushing remote tlb in mmu_set_spte() KVM: vmx: skip VMWRITE of HOST_{FS,GS}_BASE when possible KVM: vmx: skip VMWRITE of HOST_{FS,GS}_SEL when possible KVM: vmx: always initialize HOST_{FS,GS}_BASE to zero during setup KVM: vmx: move struct host_state usage to struct loaded_vmcs KVM: vmx: compute need to reload FS/GS/LDT on demand KVM: nVMX: remove a misleading comment regarding vmcs02 fields KVM: vmx: rename __vmx_load_host_state() and vmx_save_host_state() KVM: vmx: add dedicated utility to access guest's kernel_gs_base KVM: vmx: track host_state.loaded using a loaded_vmcs pointer KVM: vmx: refactor segmentation code in vmx_save_host_state() kvm: nVMX: Fix fault priority for VMX operations kvm: nVMX: Fix fault vector for VMX operation at CPL > 0 ...
| * Merge tag 'hlp_stage1' of ↵Janosch Frank2018-07-302-45/+140
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into kvms390/next KVM: s390: initial host large page support - must be enabled via module parameter hpage=1 - cannot be used together with nested - does support migration - does support hugetlbfs - no THP yet
| * | KVM: s390: Beautify skey enable checkJanosch Frank2018-07-301-6/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Let's introduce an explicit check if skeys have already been enabled for the vcpu, so we don't have to check the mm context if we don't have the storage key facility. This lets us check for enablement without having to take the mm semaphore and thus speedup skey emulation. Signed-off-by: Janosch Frank <frankja@linux.ibm.com> Reviewed-by: David Hildenbrand <david@redhat.com> Acked-by: Farhan Ali <alifm@linux.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
| * | KVM: s390: add etoken support for guestsChristian Borntraeger2018-07-192-4/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We want to provide facility 156 (etoken facility) to our guests. This includes migration support (via sync regs) and VSIE changes. The tokens are being reset on clear reset. This has to be implemented by userspace (via sync regs). Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Reviewed-by: David Hildenbrand <david@redhat.com> Acked-by: Cornelia Huck <cohuck@redhat.com>
| * | KVM: s390/vsie: avoid sparse warningChristian Borntraeger2018-07-161-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | This is a non-functional change that avoids arch/s390/kvm/vsie.c:839:25: warning: context imbalance in 'do_vsie_run' - unexpected unlock Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
| * | KVM: s390: Fix storage attributes migration with memory slotsClaudio Imbrenda2018-07-132-128/+193
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is a fix for several issues that were found in the original code for storage attributes migration. Now no bitmap is allocated to keep track of dirty storage attributes; the extra bits of the per-memslot bitmap that are always present anyway are now used for this purpose. The code has also been refactored a little to improve readability. Fixes: 190df4a212a ("KVM: s390: CMMA tracking, ESSA emulation, migration mode") Fixes: 4036e3874a1 ("KVM: s390: ioctls to get and set guest storage attributes") Acked-by: Janosch Frank <frankja@linux.vnet.ibm.com> Signed-off-by: Claudio Imbrenda <imbrenda@linux.vnet.ibm.com> Message-Id: <1525106005-13931-3-git-send-email-imbrenda@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
| * | KVM: s390: Replace clear_user with kvm_clear_guestJanosch Frank2018-07-131-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | kvm_clear_guest also does the dirty tracking for us, which we want to have. Signed-off-by: Janosch Frank <frankja@linux.ibm.com> Reviewed-by: David Hildenbrand <david@redhat.com> Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
* | | Merge branch 'for-linus' of ↵Linus Torvalds2018-08-142-46/+141
|\ \ \ | | |/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull s390 updates from Heiko Carstens: "Since Martin is on vacation you get the s390 pull request from me: - Host large page support for KVM guests. As the patches have large impact on arch/s390/mm/ this series goes out via both the KVM and the s390 tree. - Add an option for no compression to the "Kernel compression mode" menu, this will come in handy with the rework of the early boot code. - A large rework of the early boot code that will make life easier for KASAN and KASLR. With the rework the bootable uncompressed image is not generated anymore, only the bzImage is available. For debuggung purposes the new "no compression" option is used. - Re-enable the gcc plugins as the issue with the latent entropy plugin is solved with the early boot code rework. - More spectre relates changes: + Detect the etoken facility and remove expolines automatically. + Add expolines to a few more indirect branches. - A rewrite of the common I/O layer trace points to make them consumable by 'perf stat'. - Add support for format-3 PCI function measurement blocks. - Changes for the zcrypt driver: + Add attributes to indicate the load of cards and queues. + Restructure some code for the upcoming AP device support in KVM. - Build flags improvements in various Makefiles. - A few fixes for the kdump support. - A couple of patches for gcc 8 compile warning cleanup. - Cleanup s390 specific proc handlers. - Add s390 support to the restartable sequence self tests. - Some PTR_RET vs PTR_ERR_OR_ZERO cleanup. - Lots of bug fixes" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (107 commits) s390/dasd: fix hanging offline processing due to canceled worker s390/dasd: fix panic for failed online processing s390/mm: fix addressing exception after suspend/resume rseq/selftests: add s390 support s390: fix br_r1_trampoline for machines without exrl s390/lib: use expoline for all bcr instructions s390/numa: move initial setup of node_to_cpumask_map s390/kdump: Fix elfcorehdr size calculation s390/cpum_sf: save TOD clock base in SDBs for time conversion KVM: s390: Add huge page enablement control s390/mm: Add huge page gmap linking support s390/mm: hugetlb pages within a gmap can not be freed KVM: s390: Add skey emulation fault handling s390/mm: Add huge pmd storage key handling s390/mm: Clear skeys for newly mapped huge guest pmds s390/mm: Clear huge page storage keys on enable_skey s390/mm: Add huge page dirty sync support s390/mm: Add gmap pmd invalidation and clearing s390/mm: Add gmap pmd notification bit setting s390/mm: Add gmap pmd linking ...
| * | KVM: s390: Add huge page enablement controlJanosch Frank2018-07-301-2/+40
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | General KVM huge page support on s390 has to be enabled via the kvm.hpage module parameter. Either nested or hpage can be enabled, as we currently do not support vSIE for huge backed guests. Once the vSIE support is added we will either drop the parameter or enable it as default. For a guest the feature has to be enabled through the new KVM_CAP_S390_HPAGE_1M capability and the hpage module parameter. Enabling it means that cmm can't be enabled for the vm and disables pfmf and storage key interpretation. This is due to the fact that in some cases, in upcoming patches, we have to split huge pages in the guest mapping to be able to set more granular memory protection on 4k pages. These split pages have fake page tables that are not visible to the Linux memory management which subsequently will not manage its PGSTEs, while the SIE will. Disabling these features lets us manage PGSTE data in a consistent matter and solve that problem. Signed-off-by: Janosch Frank <frankja@linux.ibm.com> Reviewed-by: David Hildenbrand <david@redhat.com>
| * | KVM: s390: Add skey emulation fault handlingJanosch Frank2018-07-302-37/+83
| | | | | | | | | | | | | | | | | | | | | | | | When doing skey emulation for huge guests, we now need to fault in pmds, as we don't have PGSTES anymore to store them when we do not have valid table entries. Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
| * | s390/mm: Add huge page dirty sync supportJanosch Frank2018-07-301-7/+18
| |/ | | | | | | | | | | | | | | | | | | | | To do dirty loging with huge pages, we protect huge pmds in the gmap. When they are written to, we unprotect them and mark them dirty. We introduce the function gmap_test_and_clear_dirty_pmd which handles dirty sync for huge pages. Signed-off-by: Janosch Frank <frankja@linux.ibm.com> Acked-by: David Hildenbrand <david@redhat.com>
* / sched/swait: Rename to exclusivePeter Zijlstra2018-06-201-1/+1
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | Since swait basically implemented exclusive waits only, make sure the API reflects that. $ git grep -l -e "\<swake_up\>" -e "\<swait_event[^ (]*" -e "\<prepare_to_swait\>" | while read file; do sed -i -e 's/\<swake_up\>/&_one/g' -e 's/\<swait_event[^ (]*/&_exclusive/g' -e 's/\<prepare_to_swait\>/&_exclusive/g' $file; done With a few manual touch-ups. Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: bigeasy@linutronix.de Cc: oleg@redhat.com Cc: paulmck@linux.vnet.ibm.com Cc: pbonzini@redhat.com Link: https://lkml.kernel.org/r/20180612083909.261946548@infradead.org
* Merge tag 'overflow-v4.18-rc1-part2' of ↵Linus Torvalds2018-06-132-2/+2
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux Pull more overflow updates from Kees Cook: "The rest of the overflow changes for v4.18-rc1. This includes the explicit overflow fixes from Silvio, further struct_size() conversions from Matthew, and a bug fix from Dan. But the bulk of it is the treewide conversions to use either the 2-factor argument allocators (e.g. kmalloc(a * b, ...) into kmalloc_array(a, b, ...) or the array_size() macros (e.g. vmalloc(a * b) into vmalloc(array_size(a, b)). Coccinelle was fighting me on several fronts, so I've done a bunch of manual whitespace updates in the patches as well. Summary: - Error path bug fix for overflow tests (Dan) - Additional struct_size() conversions (Matthew, Kees) - Explicitly reported overflow fixes (Silvio, Kees) - Add missing kvcalloc() function (Kees) - Treewide conversions of allocators to use either 2-factor argument variant when available, or array_size() and array3_size() as needed (Kees)" * tag 'overflow-v4.18-rc1-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: (26 commits) treewide: Use array_size in f2fs_kvzalloc() treewide: Use array_size() in f2fs_kzalloc() treewide: Use array_size() in f2fs_kmalloc() treewide: Use array_size() in sock_kmalloc() treewide: Use array_size() in kvzalloc_node() treewide: Use array_size() in vzalloc_node() treewide: Use array_size() in vzalloc() treewide: Use array_size() in vmalloc() treewide: devm_kzalloc() -> devm_kcalloc() treewide: devm_kmalloc() -> devm_kmalloc_array() treewide: kvzalloc() -> kvcalloc() treewide: kvmalloc() -> kvmalloc_array() treewide: kzalloc_node() -> kcalloc_node() treewide: kzalloc() -> kcalloc() treewide: kmalloc() -> kmalloc_array() mm: Introduce kvcalloc() video: uvesafb: Fix integer overflow in allocation UBIFS: Fix potential integer overflow in allocation leds: Use struct_size() in allocation Convert intel uncore to struct_size ...
| * treewide: Use array_size() in vmalloc()Kees Cook2018-06-132-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The vmalloc() function has no 2-factor argument form, so multiplication factors need to be wrapped in array_size(). This patch replaces cases of: vmalloc(a * b) with: vmalloc(array_size(a, b)) as well as handling cases of: vmalloc(a * b * c) with: vmalloc(array3_size(a, b, c)) This does, however, attempt to ignore constant size factors like: vmalloc(4 * 1024) though any constants defined via macros get caught up in the conversion. Any factors with a sizeof() of "unsigned char", "char", and "u8" were dropped, since they're redundant. The Coccinelle script used for this was: // Fix redundant parens around sizeof(). @@ type TYPE; expression THING, E; @@ ( vmalloc( - (sizeof(TYPE)) * E + sizeof(TYPE) * E , ...) | vmalloc( - (sizeof(THING)) * E + sizeof(THING) * E , ...) ) // Drop single-byte sizes and redundant parens. @@ expression COUNT; typedef u8; typedef __u8; @@ ( vmalloc( - sizeof(u8) * (COUNT) + COUNT , ...) | vmalloc( - sizeof(__u8) * (COUNT) + COUNT , ...) | vmalloc( - sizeof(char) * (COUNT) + COUNT , ...) | vmalloc( - sizeof(unsigned char) * (COUNT) + COUNT , ...) | vmalloc( - sizeof(u8) * COUNT + COUNT , ...) | vmalloc( - sizeof(__u8) * COUNT + COUNT , ...) | vmalloc( - sizeof(char) * COUNT + COUNT , ...) | vmalloc( - sizeof(unsigned char) * COUNT + COUNT , ...) ) // 2-factor product with sizeof(type/expression) and identifier or constant. @@ type TYPE; expression THING; identifier COUNT_ID; constant COUNT_CONST; @@ ( vmalloc( - sizeof(TYPE) * (COUNT_ID) + array_size(COUNT_ID, sizeof(TYPE)) , ...) | vmalloc( - sizeof(TYPE) * COUNT_ID + array_size(COUNT_ID, sizeof(TYPE)) , ...) | vmalloc( - sizeof(TYPE) * (COUNT_CONST) + array_size(COUNT_CONST, sizeof(TYPE)) , ...) | vmalloc( - sizeof(TYPE) * COUNT_CONST + array_size(COUNT_CONST, sizeof(TYPE)) , ...) | vmalloc( - sizeof(THING) * (COUNT_ID) + array_size(COUNT_ID, sizeof(THING)) , ...) | vmalloc( - sizeof(THING) * COUNT_ID + array_size(COUNT_ID, sizeof(THING)) , ...) | vmalloc( - sizeof(THING) * (COUNT_CONST) + array_size(COUNT_CONST, sizeof(THING)) , ...) | vmalloc( - sizeof(THING) * COUNT_CONST + array_size(COUNT_CONST, sizeof(THING)) , ...) ) // 2-factor product, only identifiers. @@ identifier SIZE, COUNT; @@ vmalloc( - SIZE * COUNT + array_size(COUNT, SIZE) , ...) // 3-factor product with 1 sizeof(type) or sizeof(expression), with // redundant parens removed. @@ expression THING; identifier STRIDE, COUNT; type TYPE; @@ ( vmalloc( - sizeof(TYPE) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | vmalloc( - sizeof(TYPE) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | vmalloc( - sizeof(TYPE) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | vmalloc( - sizeof(TYPE) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | vmalloc( - sizeof(THING) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | vmalloc( - sizeof(THING) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | vmalloc( - sizeof(THING) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | vmalloc( - sizeof(THING) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) ) // 3-factor product with 2 sizeof(variable), with redundant parens removed. @@ expression THING1, THING2; identifier COUNT; type TYPE1, TYPE2; @@ ( vmalloc( - sizeof(TYPE1) * sizeof(TYPE2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | vmalloc( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | vmalloc( - sizeof(THING1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | vmalloc( - sizeof(THING1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | vmalloc( - sizeof(TYPE1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) | vmalloc( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) ) // 3-factor product, only identifiers, with redundant parens removed. @@ identifier STRIDE, SIZE, COUNT; @@ ( vmalloc( - (COUNT) * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | vmalloc( - COUNT * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | vmalloc( - COUNT * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | vmalloc( - (COUNT) * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | vmalloc( - COUNT * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | vmalloc( - (COUNT) * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | vmalloc( - (COUNT) * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | vmalloc( - COUNT * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) ) // Any remaining multi-factor products, first at least 3-factor products // when they're not all constants... @@ expression E1, E2, E3; constant C1, C2, C3; @@ ( vmalloc(C1 * C2 * C3, ...) | vmalloc( - E1 * E2 * E3 + array3_size(E1, E2, E3) , ...) ) // And then all remaining 2 factors products when they're not all constants. @@ expression E1, E2; constant C1, C2; @@ ( vmalloc(C1 * C2, ...) | vmalloc( - E1 * E2 + array_size(E1, E2) , ...) ) Signed-off-by: Kees Cook <keescook@chromium.org>
* | Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds2018-06-126-57/+77
|\ \ | |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull KVM updates from Paolo Bonzini: "Small update for KVM: ARM: - lazy context-switching of FPSIMD registers on arm64 - "split" regions for vGIC redistributor s390: - cleanups for nested - clock handling - crypto - storage keys - control register bits x86: - many bugfixes - implement more Hyper-V super powers - implement lapic_timer_advance_ns even when the LAPIC timer is emulated using the processor's VMX preemption timer. - two security-related bugfixes at the top of the branch" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (79 commits) kvm: fix typo in flag name kvm: x86: use correct privilege level for sgdt/sidt/fxsave/fxrstor access KVM: x86: pass kvm_vcpu to kvm_read_guest_virt and kvm_write_guest_virt_system KVM: x86: introduce linear_{read,write}_system kvm: nVMX: Enforce cpl=0 for VMX instructions kvm: nVMX: Add support for "VMWRITE to any supported field" kvm: nVMX: Restrict VMX capability MSR changes KVM: VMX: Optimize tscdeadline timer latency KVM: docs: nVMX: Remove known limitations as they do not exist now KVM: docs: mmu: KVM support exposing SLAT to guests kvm: no need to check return value of debugfs_create functions kvm: Make VM ioctl do valloc for some archs kvm: Change return type to vm_fault_t KVM: docs: mmu: Fix link to NPT presentation from KVM Forum 2008 kvm: x86: Amend the KVM_GET_SUPPORTED_CPUID API documentation KVM: x86: hyperv: declare KVM_CAP_HYPERV_TLBFLUSH capability KVM: x86: hyperv: simplistic HVCALL_FLUSH_VIRTUAL_ADDRESS_{LIST,SPACE}_EX implementation KVM: x86: hyperv: simplistic HVCALL_FLUSH_VIRTUAL_ADDRESS_{LIST,SPACE} implementation KVM: introduce kvm_make_vcpus_request_mask() API KVM: x86: hyperv: do rep check for each hypercall separately ...
| * kvm: Change return type to vm_fault_tSouptick Joarder2018-06-011-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | Use new return type vm_fault_t for fault handler. For now, this is just documenting that the function returns a VM_FAULT value rather than an errno. Once all instances are converted, vm_fault_t will become a distinct type. commit 1c8f422059ae ("mm: change return type to vm_fault_t") Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com> Reviewed-by: Matthew Wilcox <mawilcox@microsoft.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
| * KVM: s390: vsie: simplify < 8k address checksDavid Hildenbrand2018-05-171-5/+5
| | | | | | | | | | | | | | | | | | | | This makes it certainly more readable. Signed-off-by: David Hildenbrand <david@redhat.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Reviewed-by: Janosch Frank <frankja@linux.ibm.com> Signed-off-by: Janosch Frank <frankja@linux.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
| * Merge tag 'kvm-s390-master-4.17-1'Christian Borntraeger2018-05-171-1/+1
| |\ | | | | | | | | | | | | | | | KVM: s390: Fix vsie handling for transactional diagnostic block vsie (nested KVM) might reject a valid input. Fix it.
| * | KVM: s390: generalize kvm_s390_get_tod_clock_ext()David Hildenbrand2018-05-171-12/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move the Multiple-epoch facility handling into it and rename it to kvm_s390_get_tod_clock(). This leaves us with: - kvm_s390_set_tod_clock() - kvm_s390_get_tod_clock() - kvm_s390_get_tod_clock_fast() So all Multiple-epoch facility is hidden in these functions. Signed-off-by: David Hildenbrand <david@redhat.com> Reviewed-by: Collin Walling <walling@linux.ibm.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Signed-off-by: Janosch Frank <frankja@linux.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
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