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2014-12-17target-xtensa: record available window in TB flagsMax Filippov
Record last valid 4-register window pane number in TB flags so that a window overflow exception throw point is known at the translation time. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Reviewed-by: Richard Henderson <rth@twiddle.net>
2014-12-17target-xtensa: test cross-page opcodeMax Filippov
Alter cross-page TB test to also test cross-page opcode. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2014-12-17target-xtensa: fix translation for opcodes crossing page boundaryMax Filippov
If TB ends with an opcode that crosses page boundary and the following page is not executable then EPC1 for the code fetch exception wrongly points at the beginning of the TB. Always treat instruction that crosses page boundary as a separate TB. Cc: qemu-stable@nongnu.org Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2014-12-17tcg: add separate monitor command to dump opcode countersMax Filippov
Currently 'info jit' outputs half of the information to monitor and the rest to qemu log. Dumping opcode counts to monitor as a part of 'info jit' command doesn't sound useful. Add new monitor command 'info opcount' that only dumps opcode counters. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Reviewed-by: Richard Henderson <rth@twiddle.net> Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
2014-12-16Merge remote-tracking branch 'remotes/spice/tags/pull-spice-20141216-1' into ↵Peter Maydell
staging misc spice updates. # gpg: Signature made Tue 16 Dec 2014 14:03:07 GMT using RSA key ID D3E87138 # gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>" # gpg: aka "Gerd Hoffmann <gerd@kraxel.org>" # gpg: aka "Gerd Hoffmann (private) <kraxel@gmail.com>" * remotes/spice/tags/pull-spice-20141216-1: spice: fix memory leak spice: remove spice-experimental.h include spice: do not require TCP ports spice: rework mirror allocation, add no-resize fast path spice: reduce refresh rate in native mode spice: use bottom half instead of refresh timer for cursor updates Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-12-16Merge remote-tracking branch 'remotes/amit-migration/tags/for-2.3-2' into ↵Peter Maydell
staging Migration pull for 2.3. Mostly moving the code to the migration/ directory, and updating MAINTAINERS. I've also folded my other MAINTAINERS update patches into this, as they're small by themselves. # gpg: Signature made Tue 16 Dec 2014 12:21:24 GMT using RSA key ID 854083B6 # gpg: Good signature from "Amit Shah <amit@amitshah.net>" # gpg: aka "Amit Shah <amit@kernel.org>" # gpg: aka "Amit Shah <amitshah@gmx.net>" * remotes/amit-migration/tags/for-2.3-2: MAINTAINERS: Update for migrated migration code Split the QEMU buffered file code out Split struct QEMUFile out Remove migration- pre/post fixes off files in migration/ dir Start migrating migration code into a migration directory qmp-command.hx: add missing docs for migration capabilites cpu: verify that block->host is set cpu: assert host pointer offset within block exec: add wrapper for host pointer access MAINTAINERS: add include files to virtio-serial entry MAINTAINERS: add entry for virtio-rng MAINTAINERS: migration: add vmstate static checker files MAINTAINERS: Add myself to migration maintainers Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-12-16spice: fix memory leakGonglei
If errors happen for middle items of channel_list, qmp_query_spice_channels() returns NULL, and the variable cur_item going out of scope leaks the storage it points to. The flag is a compatibility thing for older spice-server versions. Meanwhile our minimum spice version requirement is new enough that we should never ever see this error, and if we do something went very seriously wrong. Let's using assert() instead of returning NULL to avoid a memory leak. Suggested-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Gonglei <arei.gonglei@huawei.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2014-12-16spice: remove spice-experimental.h includeMarc-André Lureau
Nothing seems to be using functions from spice-experimental.h (better that way). Let's remove its inclusion. Signed-off-by: Marc-André Lureau <marcandre.lureau@gmail.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2014-12-16spice: do not require TCP portsMarc-André Lureau
It is possible to use Spice server without TCP port. On local VM, qemu (and libvirt) can add new clients thanks to QMP add_client command. Signed-off-by: Marc-André Lureau <marcandre.lureau@gmail.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2014-12-16spice: rework mirror allocation, add no-resize fast pathGerd Hoffmann
Add fast path to qemu_spice_display_switch in case old and new displaysurface have identical size (happens with display panning and page flipping). We just swap the backing store then and don't go through the whole process of deleting and creating the primary surface. To simplify the code a bit move mirror surface allocation to qemu_spice_display_switch(). Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2014-12-16spice: reduce refresh rate in native modeGerd Hoffmann
Now that cursor updates are out of the way qxl needs the refresh timer only when when running in vga mode, for dirty bitmap checking. In native qxl mode the guest will notify us, so we don't need to poll and can use the idle interval (one refresh wakeup every few seconds). Cc: Marc-André Lureau <marcandre.lureau@gmail.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2014-12-16spice: use bottom half instead of refresh timer for cursor updatesGerd Hoffmann
Calling directly doesn't work due to the qxl-render code running in spice server thread context. Meanwhile bottom half scheduling is thread-safe though, so we can use that to kick a cursor update in main i/o thread context. Cc: Marc-André Lureau <marcandre.lureau@gmail.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2014-12-16MAINTAINERS: Update for migrated migration codeDr. David Alan Gilbert
My previous patches migrated the migration code into migration/ but didn't update MAINTAINERS. Note that does mean that the owner for block-migration.c changes, but I'll ask block people what they want to do. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Amit Shah <amit.shah@redhat.com>
2014-12-16Split the QEMU buffered file code outDr. David Alan Gilbert
The splitting of qemu-file and addition of the buffered file landed at the same time; so now split the buffered file code out. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Amit Shah <amit.shah@redhat.com>
2014-12-16Split struct QEMUFile outDr. David Alan Gilbert
Now we've got multiple QEMUFile source files, some of them need access to things that were defined in qemu-file.c, so create a -internal header for them. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Amit Shah <amit.shah@redhat.com>
2014-12-16Remove migration- pre/post fixes off files in migration/ dirDr. David Alan Gilbert
The general feeling is that having migration/migration-blah is overkill. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Amit Shah <amit.shah@redhat.com>
2014-12-16Start migrating migration code into a migration directoryDr. David Alan Gilbert
The migration code now occupies a fair chunk of the top level .c files, it seems time to give it it's own directory. I've not touched: arch_init.c - that's mostly RAM migration but has a few random other bits savevm.c - because it's built target specific This is purely a code move; no code has changed. - it fails checkpatch because of old violations, it feels safer to keep this as purely a move and fix those at some mythical future date. The xbzrle and vmstate tests are now only run for softmmu builds since they require files in the migrate/ directory which is only built for softmmu. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Amit Shah <amit.shah@redhat.com>
2014-12-16qmp-command.hx: add missing docs for migration capabiliteszhanghailiang
Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Amit Shah <amit.shah@redhat.com>
2014-12-16cpu: verify that block->host is setMichael S. Tsirkin
If it isn't, access at an offset will cause memory corruption. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Amos Kong <akong@redhat.com> Signed-off-by: Amit Shah <amit.shah@redhat.com>
2014-12-16cpu: assert host pointer offset within blockMichael S. Tsirkin
Make accesses safer in case we missed some check somewhere. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Amos Kong <akong@redhat.com> Signed-off-by: Amit Shah <amit.shah@redhat.com>
2014-12-16exec: add wrapper for host pointer accessMichael S. Tsirkin
host pointer accesses force pointer math, let's add a wrapper to make them safer. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Amos Kong <akong@redhat.com> Signed-off-by: Amit Shah <amit.shah@redhat.com>
2014-12-16MAINTAINERS: add include files to virtio-serial entryAmit Shah
Signed-off-by: Amit Shah <amit.shah@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Amit Shah <amit.shah@redhat.com>
2014-12-16MAINTAINERS: add entry for virtio-rngAmit Shah
Signed-off-by: Amit Shah <amit.shah@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Amit Shah <amit.shah@redhat.com>
2014-12-16MAINTAINERS: migration: add vmstate static checker filesAmit Shah
Signed-off-by: Amit Shah <amit.shah@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Amit Shah <amit.shah@redhat.com>
2014-12-16MAINTAINERS: Add myself to migration maintainersAmit Shah
Signed-off-by: Amit Shah <amit.shah@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Amit Shah <amit.shah@redhat.com>
2014-12-15Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into stagingPeter Maydell
- Migration and linuxboot fixes for 2.2 regressions - valgrind/KVM support - small i386 patches - PCI SD host controller support - malloc/free cleanups from Markus (x86/scsi) - IvyBridge model - XSAVES support for KVM - initial patches from record/replay # gpg: Signature made Mon 15 Dec 2014 16:35:08 GMT using RSA key ID 78C7AE83 # gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" # gpg: aka "Paolo Bonzini <pbonzini@redhat.com>" # gpg: WARNING: This key is not certified with sufficiently trusted signatures! # gpg: It is not certain that the signature belongs to the owner. # Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4 E2F7 7E15 100C CD36 69B1 # Subkey fingerprint: F133 3857 4B66 2389 866C 7682 BFFB D25F 78C7 AE83 * remotes/bonzini/tags/for-upstream: (47 commits) sdhci: Support SDHCI devices on PCI sdhci: Define SDHCI PCI ids sdhci: Add "sysbus" to sdhci QOM types and methods sdhci: Remove class "virtual" methods sdhci: Set a default frequency clock serial: only resample THR interrupt on rising edge of IER.THRI serial: update LSR on enabling/disabling FIFOs serial: clean up THRE/TEMT handling serial: reset thri_pending on IER writes with THRI=0 linuxboot: fix loading old kernels kvm/apic: fix 2.2->2.1 migration target-i386: add Ivy Bridge CPU model target-i386: add f16c and rdrand to Haswell and Broadwell target-i386: add VME to all CPUs pc: add 2.3 machine types i386: do not cross the pages boundaries in replay mode cpus: make icount warp behave well with respect to stop/cont timer: introduce new QEMU_CLOCK_VIRTUAL_RT clock cpu-exec: invalidate nocache translation if they are interrupted icount: introduce cpu_get_icount_raw ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-12-15sdhci: Support SDHCI devices on PCIKevin O'Connor
Support for PCI devices following the "SD Host Controller Simplified Specification Version 2.00" spec. Signed-off-by: Kevin O'Connor <kevin@koconnor.net> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-12-15sdhci: Define SDHCI PCI idsKevin O'Connor
Signed-off-by: Kevin O'Connor <kevin@koconnor.net> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-12-15sdhci: Add "sysbus" to sdhci QOM types and methodsKevin O'Connor
Update the sdhci sysbus QOM types and methods so that sysbus is in their name. This is in preparation for adding PCI versions of these types and methods. Signed-off-by: Kevin O'Connor <kevin@koconnor.net> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-12-15sdhci: Remove class "virtual" methodsKevin O'Connor
The SDHCIClass defines a series of class "methods". However, no code in the QEMU tree overrides these methods or even uses them outside of sdhci.c. Remove the virtual methods and replace them with direct calls to the underlying functions. This simplifies the process of extending the sdhci code to support PCI devices (which have a different parent class). Signed-off-by: Kevin O'Connor <kevin@koconnor.net> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-12-15sdhci: Set a default frequency clockKevin O'Connor
The Linux SDHCI PCI driver will only register the device if there is a clock frequency set. So, set a default frequency of 52Mhz. Signed-off-by: Kevin O'Connor <kevin@koconnor.net> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-12-15serial: only resample THR interrupt on rising edge of IER.THRIPaolo Bonzini
There is disagreement on whether LSR.THRE should be resampled when IER.THRI goes from 1 to 1. Bochs only does it if IER.THRI goes from 0 to 1; PCE does it even if IER.THRI is unchanged. But the Windows driver seems to always go from 1 to 0 and back to 1, so do things in agreement with Bochs, because the handling of thr_ipending was reported in 2010 (https://lists.gnu.org/archive/html/qemu-devel/2010-03/msg01914.html) as breaking DR-DOS Plus. Reported-by: Roy Tam <roytam@gmail.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-12-15serial: update LSR on enabling/disabling FIFOsPaolo Bonzini
When the transmit FIFO is emptied or enabled, the transmitter hold register is empty. When it is disabled, it is also emptied and in addition the previous contents of the transmitter hold register are discarded. In either case, the THRE bit in LSR must be set and THRI raised. When the receive FIFO is emptied or enabled, the data ready and break bits must be cleared in LSR. Likewise when the receive FIFO is disabled. Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-12-15serial: clean up THRE/TEMT handlingPaolo Bonzini
- assert TEMT is cleared before sending a character; we'll get one from TSR if tsr_retry > 0, from the FIFO or THR otherwise - assert THRE cleared and FIFO not empty (if enabled) before fetching a character to send. This effectively reverts dffacd46, but the check makes no sense and commit f702e62 (serial: change retry logic to avoid concurrency, 2014-07-11) must have made it unnecessary. The commit message for f702e62 talks about multiple calls to qemu_chr_fe_add_watch triggering s->tsr_retry >= MAX_XMIT_RETRY, but other failures were possible. For example, if you have multiple calls, the subsequent ones will see s->tsr_retry == 0 and will find THRE and/or TEMT on entry. - for clarity, raise THRI immediately after the code sets THRE - check THRE to see if another character has to be sent. This makes the assertions more obvious and also means TEMT has to be set as soon as the loop ends. It makes the loop send both TSR and THR if flow-control happens in non-FIFO mode. Previously, THR would be lost. - clear TEMT together with THRE even in the non-FIFO case The last two items are bugfixes, but they were just found by inspection and do not squash known bugs. Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-12-15serial: reset thri_pending on IER writes with THRI=0Paolo Bonzini
This is responsible for failure of migration from 2.2 to 2.1, because thr_ipending is always one in practice. serial.c is setting thr_ipending unconditionally. However, thr_ipending is not used at all if THRI=0, and it will be overwritten again the next time THRE or THRI changes. For that reason, we can set thr_ipending to zero every time THRI is reset. There is disagreement on whether LSR.THRE should be resampled when IER.THRI goes from 1 to 1. This patch does not touch the code, leaving that for QEMU 2.3+. This has no semantic change and is enough to fix migration in the common case where the interrupt is not pending or is reported in IIR. It does not change the migration format, so 2.2.0 -> 2.1 will remain broken but we can fix 2.2.1 -> 2.1 without breaking 2.2.1 <-> 2.2.0. The case that remains broken (the one in which the subsection is strictly necessary) is when THRE=1, the THRI interrupt has *not* been acknowledged yet, and a higher-priority interrupt comes. In this case, you need the subsection to tell the source that the lower-priority THRI interrupt is pending. The subsection's breakage of migration, in this case, prevents continuing the VM on the destination with an invalid state. Cc: qemu-stable@nongnu.org Reported-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-12-15linuxboot: fix loading old kernelsPaolo Bonzini
Old kernels that used high memory only allowed the initrd to be in the first 896MB of memory. If you load the initrd above, they complain that "initrd extends beyond end of memory". In order to fix this, while not breaking machines with small amounts of memory fixed by cdebec5 (linuxboot: compute initrd loading address, 2014-10-06), we need to distinguish two cases. If pc.c placed the initrd at end of memory, use the new algorithm based on the e801 memory map. If instead pc.c placed the initrd at the maximum address specified by the bzImage, leave it there. The only interesting part is that the low-memory info block is now loaded very early, in real mode, and thus the 32-bit address has to be converted into a real mode segment. The initrd address is also patched in the info block before entering real mode, it is simpler that way. This fixes booting the RHEL4.8 32-bit installation image with 1GB of RAM. Cc: qemu-stable@nongnu.org Cc: mst@redhat.com Cc: jsnow@redhat.com Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-12-15kvm/apic: fix 2.2->2.1 migrationPaolo Bonzini
The wait_for_sipi field is set back to 1 after an INIT, so it was not effective to reset it in kvm_apic_realize. Introduce a reset callback and reset wait_for_sipi there. Reported-by: Igor Mammedov <imammedo@redhat.com> Cc: qemu-stable@nongnu.org Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-12-15target-i386: add Ivy Bridge CPU modelPaolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-12-15target-i386: add f16c and rdrand to Haswell and BroadwellPaolo Bonzini
Both were added in Ivy Bridge (for which we do not have a CPU model yet!). Reviewed-by: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-12-15target-i386: add VME to all CPUsPaolo Bonzini
vm86 mode extensions date back to the 486. All models should have them. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-12-15pc: add 2.3 machine typesPaolo Bonzini
The next patch will differentiate them. Reviewed-by: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-12-15i386: do not cross the pages boundaries in replay modePavel Dovgalyuk
This patch denies crossing the boundary of the pages in the replay mode, because it can cause an exception. Do it only when boundary is crossed by the first instruction in the block. If current instruction already crossed the bound - it's ok, because an exception hasn't stopped this code. Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-12-15cpus: make icount warp behave well with respect to stop/contPavel Dovgalyuk
This patch makes icount warp use the new QEMU_CLOCK_VIRTUAL_RT clock. This way, icount's QEMU_CLOCK_VIRTUAL will never count time during which the virtual machine is stopped. Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-12-15timer: introduce new QEMU_CLOCK_VIRTUAL_RT clockPavel Dovgalyuk
This patch introduces new QEMU_CLOCK_VIRTUAL_RT clock, which should be used for icount warping. In the next patch, it will be used to avoid a huge icount warp when a virtual machine is stopped for a long time. Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-12-15cpu-exec: invalidate nocache translation if they are interruptedPavel Dovgalyuk
In this case, QEMU might longjmp out of cpu-exec.c and miss the final cleanup in cpu_exec_nocache. Do this manually through a new compile flag. Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-12-15icount: introduce cpu_get_icount_rawPavel Dovgalyuk
Separate accessing the instruction counter from the compensation for speed and halting that are introduced by qemu_icount_bias. This introduces new infrastructure used by the record/replay patches. Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-12-15icount: set can_do_io outside TB executionPavel Dovgalyuk
This patch sets can_do_io function to allow reading icount within cpu-exec, but outside TB execution. Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-12-15cpu-exec: reset exception_index correctlyPavel Dovgalyuk
Exception index is reset at every entry at every entry into cpu_exec() function. This may cause missing the exceptions while replaying them. This patch moves exception_index reset to the locations where they are processed. Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-12-15cpu-exec: fix cpu_exec_nocachePavel Dovgalyuk
In icount mode cpu_exec_nocache function is used to execute part of the existing TB. At the end of cpu_exec_nocache newly created TB is deleted. Sometimes io_read function needs to recompile current TB and restart TB lookup and execution. After that tb_find_fast function finds old (bigger) TB again. This TB cannot be executed (because icount is not big enough) and cpu_exec_nocache is called again. Such a loop continues over and over. This patch deletes old TB and avoids finding it in the TB cache. Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-12-15scsi-disk: provide maximum transfer lengthPaolo Bonzini
The QEMU block layer has a limit of INT_MAX bytes per transfer. Expose it in the block limits VPD page for both regular transfers and WRITE SAME. Reported-by: Ming Lei <ming.lei@canonical.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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