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2019-05-14migration/savevm: wrap into qemu_loadvm_state_header()Wei Yang
On source side, we have qemu_savevm_state_header() to send related data, while on the receiving side those steps are scattered in qemu_loadvm_state(). This patch wrap those related steps into qemu_loadvm_state_header() to make it friendly to read. Signed-off-by: Wei Yang <richardw.yang@linux.intel.com> Message-Id: <20190424004700.12766-5-richardw.yang@linux.intel.com> Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2019-05-14migration/savevm: load_header before load_setupWei Yang
In migration_thread() and qemu_savevm_state(), we savevm_state in following sequence: qemu_savevm_state_header(f); qemu_savevm_state_setup(f); Then it would be more proper to loadvm_state in the save sequence. Signed-off-by: Wei Yang <richardw.yang@linux.intel.com> Message-Id: <20190424004700.12766-4-richardw.yang@linux.intel.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2019-05-14migration/savevm: remove duplicate check of migration_is_blockedWei Yang
Current call flow of save_snapshot is: save_snapshot migration_is_blocked qemu_savevm_state migration_is_blocked Since qemu_savevm_state is only called in save_snapshot, this means migration_is_blocked has been already checked. Signed-off-by: Wei Yang <richardw.yang@linux.intel.com> Message-Id: <20190424004700.12766-2-richardw.yang@linux.intel.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2019-05-14migration: update comments of migration bitmapYi Wang
Since the ram bitmap and the unsent bitmap are split by RAMBlock in commit 6b6712e, it's better to update the comments about them. Signed-off-by: Yi Wang <wang.yi59@zte.com.cn> Message-Id: <1555311089-18610-1-git-send-email-wang.yi59@zte.com.cn> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2019-05-14migration/ram.c: start of migration_bitmap_sync_range is always 0Wei Yang
We can eliminate to pass 0. Signed-off-by: Wei Yang <richardw.yang@linux.intel.com> Message-Id: <20190430034412.12935-2-richardw.yang@linux.intel.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2019-05-14qemu-option.hx: Update missed parameter for colo-compareZhang Chen
We missed the iothread related args in this file. This patch is used to fix this issue. Signed-off-by: Zhang Chen <chen.zhang@intel.com> Message-Id: <20190426090730.2691-4-chen.zhang@intel.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2019-05-14migration/colo.h: Remove obsolete codesZhang Chen
Signed-off-by: Zhang Chen <chen.zhang@intel.com> Message-Id: <20190426090730.2691-3-chen.zhang@intel.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2019-05-14migration/colo.c: Remove redundant input parameterZhang Chen
The colo_do_failover no need the input parameter. Signed-off-by: Zhang Chen <chen.zhang@intel.com> Message-Id: <20190426090730.2691-2-chen.zhang@intel.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2019-05-14migration: savevm: fix error code with migration blockersCole Robinson
The only caller that checks the error code is looking for != 0, so returning false is incorrect. Fixes: 5aaac467938 "migration: savevm: consult migration blockers" Signed-off-by: Cole Robinson <crobinso@redhat.com> Message-Id: <b991a4d0e6c4253bc08b2794c6084be55fc72e1d.1554851834.git.crobinso@redhat.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2019-05-14vmstate: check subsection_found is enoughWei Yang
subsection_found is true implies vmdesc is not NULL. This patch remove the additional check on vmdesc and rename subsection_found to vmdesc_has_subsections to make it more self-explain. Signed-off-by: Wei Yang <richardw.yang@linux.intel.com> Message-Id: <20190403011016.12549-1-richardw.yang@linux.intel.com> Acked-by: Stefano Garzarella <sgarzare@redhat.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2019-05-14migration: remove not used field xfer_limitWei Yang
MigrationState->xfer_limit is only set to 0 in migrate_init(). Remove this unnecessary field. Signed-off-by: Wei Yang <richardw.yang@linux.intel.com> Message-Id: <20190326055726.10539-1-richardw.yang@linux.intel.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2019-05-14migration: not necessary to check ops againWei Yang
During each iteration, se->ops is checked before each loop. So it is not necessary to check it again and simplify the following check a little. Signed-off-by: Wei Yang <richardw.yang@linux.intel.com> Message-Id: <20190327013130.26259-1-richardw.yang@linux.intel.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2019-05-14migration: comment VMSTATE_UNUSED*() properlyPeter Xu
It is error prone to use VMSTATE_UNUSED*() sometimes especially when the size of the migration stream of the field is not the same as the size of the structure (boolean is one example). Comment it well so people will be aware of this when people want to use it. Signed-off-by: Peter Xu <peterx@redhat.com> Message-Id: <20190329095713.14177-1-peterx@redhat.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2019-05-14Merge remote-tracking branch 'remotes/rth/tags/pull-tcg-20190513' into stagingPeter Maydell
Improve code generation for vector duplication. Add vector expansions for shifts by non-constant scalar. Add vector expansions for shifts by vector. Add integer and vector expansions for absolute value. Several patches in preparation for Altivec. Bug fix for tcg/aarch64 vs min/max. # gpg: Signature made Tue 14 May 2019 00:58:02 BST # gpg: using RSA key 7A481E78868B4DB6A85A05C064DF38E8AF7E215F # gpg: issuer "richard.henderson@linaro.org" # gpg: Good signature from "Richard Henderson <richard.henderson@linaro.org>" [full] # Primary key fingerprint: 7A48 1E78 868B 4DB6 A85A 05C0 64DF 38E8 AF7E 215F * remotes/rth/tags/pull-tcg-20190513: (31 commits) tcg/aarch64: Do not advertise minmax for MO_64 target/xtensa: Use tcg_gen_abs_i32 target/tricore: Use tcg_gen_abs_tl target/s390x: Use tcg_gen_abs_i64 target/ppc: Use tcg_gen_abs_tl target/ppc: Use tcg_gen_abs_i32 target/cris: Use tcg_gen_abs_tl target/arm: Use tcg_gen_abs_i64 and tcg_gen_gvec_abs tcg/aarch64: Support vector absolute value tcg/i386: Support vector absolute value tcg: Add support for vector absolute value tcg: Add support for integer absolute value tcg/i386: Support vector scalar shift opcodes tcg: Add gvec expanders for vector shift by scalar tcg/aarch64: Support vector variable shift opcodes tcg/i386: Support vector variable shift opcodes tcg: Add gvec expanders for variable shift tcg: Add INDEX_op_dupm_vec tcg/aarch64: Implement tcg_out_dupm_vec tcg/i386: Implement tcg_out_dupm_vec ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2019-05-13tcg/aarch64: Do not advertise minmax for MO_64Richard Henderson
The min/max instructions are not available for 64-bit elements. Fixes: 93f332a50371 Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-05-13target/xtensa: Use tcg_gen_abs_i32Richard Henderson
Acked-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-05-13target/tricore: Use tcg_gen_abs_tlPhilippe Mathieu-Daudé
Reviewed-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20190423102145.14812-3-f4bug@amsat.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-05-13target/s390x: Use tcg_gen_abs_i64Richard Henderson
Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-05-13target/ppc: Use tcg_gen_abs_tlRichard Henderson
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-05-13target/ppc: Use tcg_gen_abs_i32Philippe Mathieu-Daudé
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20190423102145.14812-2-f4bug@amsat.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-05-13target/cris: Use tcg_gen_abs_tlRichard Henderson
Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-05-13target/arm: Use tcg_gen_abs_i64 and tcg_gen_gvec_absRichard Henderson
Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-05-13tcg/aarch64: Support vector absolute valueRichard Henderson
Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-05-13tcg/i386: Support vector absolute valueRichard Henderson
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-05-13tcg: Add support for vector absolute valueRichard Henderson
Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-05-13tcg: Add support for integer absolute valueRichard Henderson
Remove a function of the same name from target/arm/. Use a branchless implementation of abs gleaned from gcc. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: David Hildenbrand <david@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-05-13tcg/i386: Support vector scalar shift opcodesRichard Henderson
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-05-13tcg: Add gvec expanders for vector shift by scalarRichard Henderson
Allow expansion either via shift by scalar or by replicating the scalar for shift by vector. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> --- v3: Use a private structure for do_gvec_shifts.
2019-05-13tcg/aarch64: Support vector variable shift opcodesRichard Henderson
Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-05-13tcg/i386: Support vector variable shift opcodesRichard Henderson
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-05-13tcg: Add gvec expanders for variable shiftRichard Henderson
The gvec expanders perform a modulo on the shift count. If the target requires alternate behaviour, then it cannot use the generic gvec expanders anyway, and will have to have its own custom code. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-05-13tcg: Add INDEX_op_dupm_vecRichard Henderson
Allow the backend to expand dup from memory directly, instead of forcing the value into a temp first. This is especially important if integer/vector register moves do not exist. Note that officially tcg_out_dupm_vec is allowed to fail. If it did, we could fix this up relatively easily: VECE == 32/64: Load the value into a vector register, then dup. Both of these must work. VECE == 8/16: If the value happens to be at an offset such that an aligned load would place the desired value in the least significant end of the register, go ahead and load w/garbage in high bits. Load the value w/INDEX_op_ld{8,16}_i32. Attempt a move directly to vector reg, which may fail. Store the value into the backing store for OTS. Load the value into the vector reg w/TCG_TYPE_I32, which must work. Duplicate from the vector reg into itself, which must work. All of which is well and good, except that all supported hosts can support dupm for all vece, so all of the failure paths would be dead code and untestable. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-05-13tcg/aarch64: Implement tcg_out_dupm_vecRichard Henderson
The LD1R instruction does all the work. Note that the only useful addressing mode is a base register with no offset. Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-05-13tcg/i386: Implement tcg_out_dupm_vecRichard Henderson
At the same time, improve tcg_out_dupi_vec wrt broadcast from the constant pool. Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-05-13tcg: Add tcg_out_dupm_vec to the backend interfaceRichard Henderson
Currently stubbed out in all backends that support vectors. Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-05-13tcg: Manually expand INDEX_op_dup_vecRichard Henderson
This case is similar to INDEX_op_mov_* in that we need to do different things depending on the current location of the source. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> --- v3: Added some commentary to the tcg_reg_alloc_* functions.
2019-05-13tcg: Promote tcg_out_{dup,dupi}_vec to backend interfaceRichard Henderson
The i386 backend already has these functions, and the aarch64 backend could easily split out one. Nothing is done with these functions yet, but this will aid register allocation of INDEX_op_dup_vec in a later patch. Adjust the aarch64 tcg_out_dupi_vec signature to match the new interface. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-05-13tcg: Support cross-class moves without instruction supportRichard Henderson
PowerPC Altivec does not support direct moves between vector registers and general registers. So when tcg_out_mov fails, we can use the backing memory for the temporary to perform the move. Acked-by: David Hildenbrand <david@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-05-13tcg: Return bool success from tcg_out_movRichard Henderson
This patch merely changes the interface, aborting on all failures, of which there are currently none. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: David Hildenbrand <david@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-05-13tcg/arm: Use tcg_out_mov_reg in tcg_out_movRichard Henderson
We have a function that takes an additional condition parameter over the standard backend interface. It already takes care of eliding no-op moves. Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-05-13tcg: Assert fixed_reg is read-onlyRichard Henderson
The only fixed_reg is cpu_env, and it should not be modified during any TB. Therefore code that tries to special-case moves into a fixed_reg is dead. Remove it. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-05-13tcg: Specify optional vector requirements with a listRichard Henderson
Replace the single opcode in .opc with a null-terminated array in .opt_opc. We still require that all opcodes be used with the same .vece. Validate the contents of this list with CONFIG_DEBUG_TCG. All tcg_gen_*_vec functions will check any list active during .fniv expansion. Swap the active list in and out as we expand other opcodes, or take control away from the front-end function. Convert all existing vector aware front ends. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-05-13tcg: Allow add_vec, sub_vec, neg_vec, not_vec to be expandedRichard Henderson
PowerPC Altivec does not support add and subtract of 64-bit elements. Prepare for that configuration by not assuming the operation is universally supported. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-05-13tcg: Do not recreate INDEX_op_neg_vec unless supportedRichard Henderson
Use tcg_can_emit_vec_op instead of just TCG_TARGET_HAS_neg_vec, so that we check the type and vece for the actual operation. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-05-13tcg: Implement tcg_gen_gvec_3i()David Hildenbrand
Let's add tcg_gen_gvec_3i(), similar to tcg_gen_gvec_2i(), however without introducing "gen_helper_gvec_3i *fnoi", as it isn't needed for now. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20190416185301.25344-2-david@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-05-13Merge remote-tracking branch ↵Peter Maydell
'remotes/huth-gitlab/tags/pull-request-2019-05-13' into staging Kconfig settings for the Arm machines # gpg: Signature made Mon 13 May 2019 09:19:43 BST # gpg: using RSA key 2ED9D774FE702DB5 # gpg: Good signature from "Thomas Huth <th.huth@gmx.de>" [full] # gpg: aka "Thomas Huth <thuth@redhat.com>" [full] # gpg: aka "Thomas Huth <huth@tuxfamily.org>" [full] # gpg: aka "Thomas Huth <th.huth@posteo.de>" [unknown] # Primary key fingerprint: 27B8 8847 EEE0 2501 18F3 EAB9 2ED9 D774 FE70 2DB5 * remotes/huth-gitlab/tags/pull-request-2019-05-13: (29 commits) hw/arm: Remove hard-enablement of the remaining PCI devices hw/arm: Express dependencies of the musca machines with Kconfig hw/arm: Express dependencies of the xlnx-versal-virt machine with Kconfig hw/arm: Express dependencies of the ZynqMP zcu102 machine with Kconfig hw/arm: Express dependencies of the microbit / nrf51 machine with Kconfig hw/arm: Express dependencies of the remaining IMX boards with Kconfig hw/arm: Express dependencies of the MSF2 / EMCRAFT_SF2 machine with Kconfig hw/arm: Express dependencies of sabrelite with Kconfig hw/arm: Express dependencies of canon-a1100 with Kconfig hw/arm: Express dependencies of the raspi machines with Kconfig hw/arm: Express dependencies of the MPS2 boards with Kconfig hw/arm: Express dependencies of allwinner / cubieboard with Kconfig hw/arm: Express dependencies of netduino / stm32f2xx with Kconfig hw/arm: Express dependencies of the virt machine with Kconfig hw/arm: Express dependencies of the aspeed boards with Kconfig hw/arm: Express dependencies of collie with Kconfig hw/arm: Express dependencies of xilinx-zynq with Kconfig hw/arm: Express dependencies of the PXA2xx machines with Kconfig hw/arm: Express dependencies of realview, versatile and vexpress with Kconfig hw/arm: Express dependencies of stellaris with Kconfig ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2019-05-13Merge remote-tracking branch 'remotes/armbru/tags/pull-misc-2019-05-13' into ↵Peter Maydell
staging Miscellaneous patches for 2019-05-13 # gpg: Signature made Mon 13 May 2019 08:04:02 BST # gpg: using RSA key 3870B400EB918653 # gpg: Good signature from "Markus Armbruster <armbru@redhat.com>" [full] # gpg: aka "Markus Armbruster <armbru@pond.sub.org>" [full] # Primary key fingerprint: 354B C8B3 D7EB 2A6B 6867 4E5F 3870 B400 EB91 8653 * remotes/armbru/tags/pull-misc-2019-05-13: Clean up decorations and whitespace around header guards Normalize header guard symbol definition. Clean up ill-advised or unusual header guards Clean up header guards that don't match their file name target/xtensa: Clean up core-isa.h header guards linux-user/nios2 linux-user/riscv: Clean up header guards authz: Normalize #include "authz/trace.h" to "trace.h" Use #include "..." for our own headers, <...> for others Clean up includes Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2019-05-13Merge remote-tracking branch ↵Peter Maydell
'remotes/kraxel/tags/input-20190513-v2-pull-request' into staging input: add vhost-user-input, virtio-input fixes. # gpg: Signature made Mon 13 May 2019 07:52:39 BST # gpg: using RSA key 4CB6D8EED3E87138 # gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>" [full] # gpg: aka "Gerd Hoffmann <gerd@kraxel.org>" [full] # gpg: aka "Gerd Hoffmann (private) <kraxel@gmail.com>" [full] # Primary key fingerprint: A032 8CFF B93A 17A7 9901 FE7D 4CB6 D8EE D3E8 7138 * remotes/kraxel/tags/input-20190513-v2-pull-request: virtio-input: fix Kconfig dependency and Makefile virtio-input-host-pci: cleanup types util: simplify unix_listen() Add vhost-user-input-pci Add vhost-user-backend libvhost-user: add PROTOCOL_F_CONFIG if {set, get}_config libvhost-user: fix -Waddress-of-packed-member Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2019-05-13Merge remote-tracking branch ↵Peter Maydell
'remotes/stsquad/tags/pull-demacro-softmmu-100519-1' into staging Demacrofy the SoftMMU - the demacro itself - refactor TLB_RECHECK and fix bug - move unaligned handler out # gpg: Signature made Fri 10 May 2019 20:34:14 BST # gpg: using RSA key 6685AE99E75167BCAFC8DF35FBD0DB095A9E2A44 # gpg: Good signature from "Alex Bennée (Master Work Key) <alex.bennee@linaro.org>" [full] # Primary key fingerprint: 6685 AE99 E751 67BC AFC8 DF35 FBD0 DB09 5A9E 2A44 * remotes/stsquad/tags/pull-demacro-softmmu-100519-1: cputlb: Do unaligned store recursion to outermost function cputlb: Do unaligned load recursion to outermost function cputlb: Drop attribute flatten cputlb: Move TLB_RECHECK handling into load/store_helper accel/tcg: demacro cputlb Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2019-05-13hw/arm: Remove hard-enablement of the remaining PCI devicesThomas Huth
The PCI devices should be pulled in by default if PCI_DEVICES is set, so there is no need anymore to enforce them in the configs file. Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com> Signed-off-by: Thomas Huth <thuth@redhat.com>