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2015-09-15target-tilegx: Handle shift instructionsRichard Henderson
Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net>
2015-09-15target-tilegx: Handle bitfield instructionsRichard Henderson
Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net>
2015-09-15target-tilegx: Implement system and memory management instructionsRichard Henderson
Most of which are either nops or exceptions. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net>
2015-09-15target-tilegx: Handle comparison instructionsRichard Henderson
Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net>
2015-09-15target-tilegx: Handle conditional branch instructionsRichard Henderson
Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net>
2015-09-15target-tilegx: Handle unconditional jump instructionsRichard Henderson
Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net>
2015-09-15target-tilegx: Handle post-increment load and store instructionsRichard Henderson
Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net>
2015-09-15target-tilegx: Handle basic load and store instructionsRichard Henderson
Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net>
2015-09-15target-tilegx: Handle most bit manipulation instructionsRichard Henderson
The crc instructions are omitted from this set. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net>
2015-09-15target-arm: Use new revbit functionsRichard Henderson
Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net>
2015-09-15host-utils: Add revbit functionsRichard Henderson
Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net>
2015-09-15target-tilegx: Handle arithmetic instructionsRichard Henderson
Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net>
2015-09-15target-tilegx: Handle simple logical operationsRichard Henderson
Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net>
2015-09-15target-tilegx: Add TILE-Gx building filesChen Gang
Add related configuration and make files for tilegx. The target can now build, though not run anything. Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Message-Id: <BLU436-SMTP1588E5A03AD5E94B07E988B9660@phx.gbl> Signed-off-by: Richard Henderson <rth@twiddle.net>
2015-09-15target-tilegx: Generate SEGV properlyRichard Henderson
Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net>
2015-09-15target-tilegx: Framework for decoding bundlesRichard Henderson
Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net>
2015-09-15target-tilegx: Add several helpers for instructions translationChen Gang
The related instructions are exception, cntlz, cnttz, shufflebytes. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com> Message-Id: <BLU436-SMTP83F96FD8422BE49AFDC9DFB9660@phx.gbl> [rth: Remove incorrect implementation of add_saturate.] Signed-off-by: Richard Henderson <rth@twiddle.net>
2015-09-15target-tilegx: Add cpu basic features for linux-userChen Gang
It implements minimized cpu features for linux-user. Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Message-Id: <BLU436-SMTP114819BB03D853801AA9C3CB9660@phx.gbl> Signed-off-by: Richard Henderson <rth@twiddle.net>
2015-09-15target-tilegx: Add special register information from Tilera CorporationChen Gang
The related copy is from Linux kernel "arch/tile/include/uapi/arch/ spr_def_64.h". Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Message-Id: <BLU436-SMTP1093D605AAE9B4837B564B8B9660@phx.gbl> Signed-off-by: Richard Henderson <rth@twiddle.net>
2015-09-15target-tilegx: Fix LDNA_ADD_IMM8_OPCODE_X1Richard Henderson
An obvious typo in the mnemonic here. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net>
2015-09-15target-tilegx: Modify _SPECIAL_ opcodesRichard Henderson
Both ADDX_SPECIAL_0_OPCODE_Y1 and ADD_SPECIAL_0_OPCODE_Y1 do not appear to be "special" in any way, except that they don't follow the normal naming convention using _RRR_. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net>
2015-09-15target-tilegx: Modify opcode_tilegx.h to fit QEMU usageChen Gang
Use 'inline' instead of '__inline', and also use 'uint64_t' instead of "unsigned long long" Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Message-Id: <BLU436-SMTP1945B04384351D5EE7D9DECB9660@phx.gbl> Signed-off-by: Richard Henderson <rth@twiddle.net>
2015-09-15target-tilegx: Add opcode basic implementation from Tilera CorporationChen Gang
It is copied from Linux kernel "arch/tile/include/uapi/arch/ opcode_tilegx.h". Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Message-Id: <BLU436-SMTP2087FA98B64A20B25155D9AB9660@phx.gbl> Signed-off-by: Richard Henderson <rth@twiddle.net>
2015-09-15linux-user: Conditionalize syscalls which are not defined in tilegxChen Gang
Some of architectures (e.g. tilegx), several syscall macros are not supported, so switch them. Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Message-Id: <BLU436-SMTP457D6FC9B2B9BA87AEB22CB9660@phx.gbl> Signed-off-by: Richard Henderson <rth@twiddle.net>
2015-09-15linux-user: Support tilegx architecture in linux-userChen Gang
Add main working flow feature, system call processing feature, and elf64 tilegx binary loading feature, based on Linux kernel tilegx 64-bit implementation. [rth: Moved all of the implementation of atomic instructions to a later patch.] Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Message-Id: <BLU436-SMTP938552D42808AA60634582B9660@phx.gbl> Signed-off-by: Richard Henderson <rth@twiddle.net>
2015-09-15linux-user: tilegx: Add architecture related featuresChen Gang
They are based on Linux kernel tilegx architecture for 64 bit binary, and also based on tilegx ABI reference document, and also reference from other targets implementations. Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Message-Id: <BLU436-SMTP2508945F92945BB525605A3B9660@phx.gbl> Signed-off-by: Richard Henderson <rth@twiddle.net>
2015-09-15Merge remote-tracking branch 'remotes/stefanha/tags/net-pull-request' into ↵Peter Maydell
staging This net pull request contains security fixes for qemu.git/master. The patches should also be applied to stable trees. The ne2000 NIC model has QEMU memory corruption issue. Both ne2000 and e1000 have an infinite loop. Please see the patches for CVE numbers and details on the bugs. # gpg: Signature made Tue 15 Sep 2015 13:02:21 BST using RSA key ID 81AB73C8 # gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>" # gpg: aka "Stefan Hajnoczi <stefanha@gmail.com>" * remotes/stefanha/tags/net-pull-request: net: avoid infinite loop when receiving packets(CVE-2015-5278) net: add checks to validate ring buffer pointers(CVE-2015-5279) e1000: Avoid infinite loop in processing transmit descriptor (CVE-2015-6815) Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-09-15net: avoid infinite loop when receiving packets(CVE-2015-5278)P J P
Ne2000 NIC uses ring buffer of NE2000_MEM_SIZE(49152) bytes to process network packets. While receiving packets via ne2000_receive() routine, a local 'index' variable could exceed the ring buffer size, leading to an infinite loop situation. Reported-by: Qinghao Tang <luodalongde@gmail.com> Signed-off-by: P J P <pjp@fedoraproject.org> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-09-15net: add checks to validate ring buffer pointers(CVE-2015-5279)P J P
Ne2000 NIC uses ring buffer of NE2000_MEM_SIZE(49152) bytes to process network packets. While receiving packets via ne2000_receive() routine, a local 'index' variable could exceed the ring buffer size, which could lead to a memory buffer overflow. Added other checks at initialisation. Reported-by: Qinghao Tang <luodalongde@gmail.com> Signed-off-by: P J P <pjp@fedoraproject.org> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-09-15e1000: Avoid infinite loop in processing transmit descriptor (CVE-2015-6815)P J P
While processing transmit descriptors, it could lead to an infinite loop if 'bytes' was to become zero; Add a check to avoid it. [The guest can force 'bytes' to 0 by setting the hdr_len and mss descriptor fields to 0. --Stefan] Signed-off-by: P J P <pjp@fedoraproject.org> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Message-id: 1441383666-6590-1-git-send-email-stefanha@redhat.com
2015-09-14Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into stagingPeter Maydell
Block layer patches (v2) # gpg: Signature made Mon 14 Sep 2015 15:56:54 BST using RSA key ID C88F2FD6 # gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>" * remotes/kevin/tags/for-upstream: (23 commits) qcow2: Make qcow2_alloc_bytes() more explicit vmdk: Fix next_cluster_sector for compressed write iotests: Add test for checking large image files qcow2: Make size_to_clusters() return uint64_t qemu-iotests: More qcow2 reopen tests qemu-iotests: Reopen qcow2 with lazy-refcounts change qcow2: Support updating driver-specific options in reopen qcow2: Make qcow2_update_options() suitable for transactions qcow2: Fix memory leak in qcow2_update_options() error path qcow2: Leave s unchanged on qcow2_update_options() failure qcow2: Move rest of option handling to qcow2_update_options() qcow2: Move qcow2_update_options() call up qcow2: Factor out qcow2_update_options() qcow2: Improve error message qemu-io: Add command 'reopen' qemu-io: Remove duplicate 'open' error message block: Allow specifying driver-specific options to reopen qcow2: Rename BDRVQcowState to BDRVQcow2State block: Drop bdrv_find_whitelisted_format() block: Drop drv parameter from bdrv_fill_options() ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-09-14qapi: Fix cgen() for Python older than 2.7Markus Armbruster
A feature new in Python 2.7 crept into commit 77e703b: re.subn()'s fifth argument. Avoid that, use re.compile(). Reported-by: Laurent Desnogues <laurent.desnogues@gmail.com> Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Tested-by: Laurent Desnogues <laurent.desnogues@gmail.com> Message-id: 1441640755-23902-1-git-send-email-armbru@redhat.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-09-14Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into stagingPeter Maydell
* Support for jemalloc * qemu_mutex_lock_iothread "No such process" fix * cutils: qemu_strto* wrappers * iohandler.c simplification * Many other fixes and misc patches. And some MTTCG work (with Emilio's fixes squashed): * Signal-free TCG kick * Removing spinlock in favor of QemuMutex * User-mode emulation multi-threading fixes/docs # gpg: Signature made Thu 10 Sep 2015 09:03:07 BST using RSA key ID 78C7AE83 # gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" # gpg: aka "Paolo Bonzini <pbonzini@redhat.com>" * remotes/bonzini/tags/for-upstream: (44 commits) cutils: work around platform differences in strto{l,ul,ll,ull} cpu-exec: fix lock hierarchy for user-mode emulation exec: make mmap_lock/mmap_unlock globally available tcg: comment on which functions have to be called with mmap_lock held tcg: add memory barriers in page_find_alloc accesses remove unused spinlock. replace spinlock by QemuMutex. cpus: remove tcg_halt_cond and tcg_cpu_thread globals cpus: protect work list with work_mutex scripts/dump-guest-memory.py: fix after RAMBlock change configure: Add support for jemalloc add macro file for coccinelle configure: factor out adding disas configure vhost-scsi: fix wrong vhost-scsi firmware path checkpatch: remove tests that are not relevant outside the kernel checkpatch: adapt some tests to QEMU CODING_STYLE: update mixed declaration rules qmp: Add example usage of strto*l() qemu wrapper cutils: Add qemu_strtoull() wrapper cutils: Add qemu_strtoll() wrapper ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-09-14qcow2: Make qcow2_alloc_bytes() more explicitMax Reitz
In case of -EAGAIN returned by update_refcount(), we should discard the cluster offset we were trying to allocate and request a new one, because in theory that old offset might now be taken by a refcount block. In practice, this was not the case due to update_refcount() generally returning strictly monotonic increasing cluster offsets. However, this behavior is not set in stone, and it is also not obvious when looking at qcow2_alloc_bytes() alone, so we should not rely on it. Reported-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2015-09-14vmdk: Fix next_cluster_sector for compressed writeRadoslav Gerganov
When the VMDK is streamOptimized (or compressed), the next_cluster_sector must not be incremented by a fixed number of sectors. Instead of this, it must be rounded up to the next consecutive sector. Fixing this results in much smaller compressed images. Signed-off-by: Radoslav Gerganov <rgerganov@vmware.com> Reviewed-by: Fam Zheng <famz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2015-09-14iotests: Add test for checking large image filesMax Reitz
Add a test for checking a qcow2 file with a multiple of 2^32 clusters. Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2015-09-14qcow2: Make size_to_clusters() return uint64_tMax Reitz
Sadly, some images may have more clusters than what can be represented using a plain int. We should be prepared for that case (in qcow2_check_refcounts() we actually were trying to catch that case, but since size_to_clusters() truncated the returned value, that check never did anything useful). Cc: qemu-stable <qemu-stable@nongnu.org> Signed-off-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2015-09-14qemu-iotests: More qcow2 reopen testsKevin Wolf
Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com>
2015-09-14qemu-iotests: Reopen qcow2 with lazy-refcounts changeKevin Wolf
Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com>
2015-09-14qcow2: Support updating driver-specific options in reopenKevin Wolf
For updating the cache sizes, disabling lazy refcounts and updating the clean_cache_timer there is a bit more to do than just changing the variables, but otherwise we're all set for changing options during bdrv_reopen(). Just implement the missing pieces and hook the functions up in bdrv_reopen(). Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com>
2015-09-14qcow2: Make qcow2_update_options() suitable for transactionsKevin Wolf
Before we can allow updating options at runtime with bdrv_reopen(), we need to split the function into prepare/commit/abort parts. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com>
2015-09-14qcow2: Fix memory leak in qcow2_update_options() error pathKevin Wolf
Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com>
2015-09-14qcow2: Leave s unchanged on qcow2_update_options() failureKevin Wolf
On return, either all new options should be applied to BDRVQcowState (on success), or all of the old settings should be preserved (on failure). Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com>
2015-09-14qcow2: Move rest of option handling to qcow2_update_options()Kevin Wolf
With this commit, the handling of driver-specific options in qcow2_open() is completely separated out into qcow2_update_options(). Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com>
2015-09-14qcow2: Move qcow2_update_options() call upKevin Wolf
qcow2_update_options() only updates some variables in BDRVQcowState and doesn't really depend on other parts of it being initialised yet, so it can be moved so that it immediately follows the other half of option handling code in qcow2_open(). Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com>
2015-09-14qcow2: Factor out qcow2_update_options()Kevin Wolf
Eventually we want to be able to change options at runtime. As a first step towards that goal, separate some option handling code from the general initialisation code in qcow2_open(). Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com>
2015-09-14qcow2: Improve error messageKevin Wolf
Eric says that "any" sounds better than "either", and my non-native feeling says the same, so let's change it. Suggested-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com>
2015-09-14qemu-io: Add command 'reopen'Kevin Wolf
Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com>
2015-09-14qemu-io: Remove duplicate 'open' error messageKevin Wolf
qemu_opts_parse_noisily() already prints an error message with the exact reason why the parsing failed. No need to add another less specific one. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com>
2015-09-14block: Allow specifying driver-specific options to reopenKevin Wolf
Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com>
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