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2012-04-09netfilter: ip6_tables: ip6t_ext_hdr is now static inlinePablo Neira Ayuso
We may hit this in xt_LOG: net/built-in.o:xt_LOG.c:function dump_ipv6_packet: error: undefined reference to 'ip6t_ext_hdr' happens with these config options: CONFIG_NETFILTER_XT_TARGET_LOG=y CONFIG_IP6_NF_IPTABLES=m ip6t_ext_hdr is fairly small and it is called in the packet path. Make it static inline. Reported-by: Simon Kirby <sim@netnation.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2012-04-09netfilter: nf_ct_tcp: don't scale the size of the window up twiceChangli Gao
For a picked up connection, the window win is scaled twice: one is by the initialization code, and the other is by the sender updating code. I use the temporary variable swin instead of modifying the variable win. Signed-off-by: Changli Gao <xiaosuo@gmail.com> Acked-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2012-04-09[media] uvcvideo: Fix race-related crash in uvc_video_clock_update()Laurent Pinchart
The driver frees the clock samples buffer before stopping the video buffers queue. If a DQBUF call arrives in-between, uvc_video_clock_update() will be called with a NULL clock samples buffer, leading to a crash. This occurs very frequently when using the webcam with the flash browser plugin. Move clock initialization/cleanup to uvc_video_enable() in order to free the clock samples buffer after the queue is stopped. Make sure the clock is reset at resume time to avoid miscalculating timestamps. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Cc: stable@vger.kernel.org Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-04-09[media] Drivers/media/radio: Fix build errorHans Verkuil
On Sunday, April 01, 2012 21:09:34 Tracey Dent wrote: > radio-maxiradio depends on SND_FM801_TEA575X_BOOL to build or will > result in an build error such as: > > Kernel: arch/x86/boot/bzImage is ready (#1) > ERROR: "snd_tea575x_init" [drivers/media/radio/radio-maxiradio.ko] undefined! > ERROR: "snd_tea575x_exit" [drivers/media/radio/radio-maxiradio.ko] undefined! > WARNING: modpost: Found 6 section mismatch(es). > To see full details build your kernel with: > 'make CONFIG_DEBUG_SECTION_MISMATCH=y' > make[1]: *** [__modpost] Error 1 > make: *** [modules] Error 2 > > Select CONFIG_SND_TEA575X to fixes problem and enable > the driver to be built as desired. > > v2: > instead of selecting CONFIG_SND_FM801_TEA575X_BOOL, select > CONFIG_SND_TEA575X, which in turns selects CONFIG_SND_FM801_TEA575X_BOOL > and any other dependencies for it to build. No, this is the correct patch: RADIO_MAXIRADIO should be treated just like RADIO_SF16FMR2, I just didn't realize at the time that it had to be added as a SND_TEA575X dependency. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Tested-by: Shea Levy <shea@shealevy.com> Acked-by: Mauro Carvalho Chehab <mchehab@infradead.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-04-09[media] dvb_frontend: fix compiler warningHans Petter Selasky
has_get_frontend() should return a boolean, not a pointer. Signed-off-by: Hans Petter Selasky <hselasky@c2i.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-04-09[media] it913x: fix firmware loading errorsMalcolm Priestley
On some systems the device does not respond or give obscure values after cold, warm or firmware reboot. This patch retries to get chip version and type 5 times. If it fails it applies chip version 0x1 and type 0x9135. This patch does not fix warm cycle problems from other operating systems and indeed the reverse applies. Users should power off cold boot. Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-04-09[media] ivtv: Fix AUDIO_(BILINGUAL_)CHANNEL_SELECT regressionHans Verkuil
When I converted ivtv to the new decoder API I introduced a regression in the support of the old channel select API. Thanks to Martin Dauskardt for reporting this. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Reviewed-by: Andy Walls <awalls@md.metrocast.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-04-09[media] dvb_frontend: regression fix: userspace ABI broken for xineChris Rankin
The commit e399ce77e6e has broken the DVB ABI for xine: The problem is that xine is expecting every event after a successful FE_SET_FRONTEND ioctl to have a non-zero frequency parameter, regardless of whether the tuning process has LOCKed yet. What used to happen is that the events inherited the initial tuning parameters from the FE_SET_FRONTEND call. However, the fepriv->parameters_out struct is now not initialised until the status contains the FE_HAS_LOCK bit. You might argue that this behaviour is intentional, except that if an application other than xine uses the DVB adapter and manages to set the parameters_out.frequency field to something other than zero, then xine no longer has any problems until either the adapter is replugged or the kernel modules reloaded. This can only mean that the fepriv->parameters_out struct still contains the (stale) tuning information from the previous application. Signed-off-by: Chris Rankin <rankincj@yahoo.com> Cc: stable@kernel.org # for kernel version 3.3 Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-04-09mtip32xx: dump tagmap on failureAsai Thambi S P
Dump tagmap on failure, instead of individual tags. Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-04-09mtip32xx: fix handling of commands in various scenariosAsai Thambi S P
* If a ncq command time out and a non-ncq command is active, skip restart port * Queue(pause) ncq commands during operations spanning more than one non-ncq commands - secure erase, download microcode * When a non-ncq command is active, allow incoming non-ncq commands to wait instead of failing back * Changed timeout for download microcode and smart commands * If the device in write protect mode, fail all writes (do not send to device) * Set maximum retries to 2 Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-04-09mtip32xx: Shorten macro namesAsai Thambi S P
Shortened macros used to represent mtip_port->flags and dd->dd_flag Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-04-09mtip32xx: misc changesAsai Thambi S P
* Handle the interrupt completion of polled internal commands * Do not check remove pending flag for standby command * On rebuild failure, - set corresponding bit dd_flag - do not send standby command * Free ida index in remove path Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-04-09mtip32xx: Add new sysfs entry 'status'Asai Thambi S P
* Add support for detecting the following device status - write protect - over temp (thermal shutdown) * Add new sysfs entry 'status', possible values - online, write_protect, thermal_shutdown * Add new file 'sysfs-block-rssd' to document ABI (Reported-by: Greg Kroah-Hartman) Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-04-09mtip32xx: make setting comp_time as commonAsai Thambi S P
Moved setting completion time into mtip_issue_ncq_command() Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-04-09mtip32xx: Add new bitwise flag 'dd_flag'Asai Thambi S P
* Merged the following flags into one variable 'dd_flag': * drv_cleanup_done * resumeflag * Added the following flags into 'dd_flag' * remove pending * init done * Removed 'ftlrebuildflag' (similar flag is already part of mti_port->flags) Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-04-09typo fix in Documentation/filesystems/vfs.txtAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-04-09dentry leak in simple_fill_super() failure exitAl Viro
d_genocide() does _not_ evict dentries; it just removes extra ref pinning each of those. Normally it's followed by shrinking the tree (it's done just before generic_shutdown_super() by kill_litter_super()), but in case of simple_fill_super() nothing of that kind will follow. Just do shrink_dcache_parent() manually. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-04-09fix breakage in mtdchar_open(), sanitize failure exitsAl Viro
simple_release_fs() should be only done on failure there. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-04-08ARM: EXYNOS: Fix compile error in exynos5250-cpufreq.cJonghwan Choi
This patch is omitted in v2 patch of Jaecheol Lee. drivers/cpufreq/exynos5250-cpufreq.c: In function 'set_clkdiv': drivers/cpufreq/exynos5250-cpufreq.c:144: error: 'EXYNOS5_CLKDIV_STATCPU0' undeclared (first use in this function) drivers/cpufreq/exynos5250-cpufreq.c:144: error: (Each undeclared identifier is reported only once drivers/cpufreq/exynos5250-cpufreq.c:144: error: for each function it appears in.) drivers/cpufreq/exynos5250-cpufreq.c:150: error: 'EXYNOS5_CLKDIV_CPU1' undeclared (first use in this function) drivers/cpufreq/exynos5250-cpufreq.c:152: error: 'EXYNOS5_CLKDIV_STATCPU1' undeclared (first use in this function) drivers/cpufreq/exynos5250-cpufreq.c: In function 'set_apll': drivers/cpufreq/exynos5250-cpufreq.c:166: error: 'EXYNOS5_CLKMUX_STATCPU' undeclared (first use in this function) drivers/cpufreq/exynos5250-cpufreq.c:173: error: 'EXYNOS5_APLL_LOCK' undeclared (first use in this function) drivers/cpufreq/exynos5250-cpufreq.c: In function 'exynos5250_cpufreq_init': drivers/cpufreq/exynos5250-cpufreq.c:312: error: 'EXYNOS5_CLKDIV_CPU1' undeclared (first use in this function) Cc: Jaecheol Lee <jc.lee@samsung.com> Signed-off-by: Jonghwan Choi <jhbird.choi@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2012-04-08ARM: EXYNOS: Add missing definition for IRQ_I2S0Tushar Behera
This fixes following build error when sound support is selected on EXYNOS4 platform. sound/soc/samsung/idma.c: In function ‘idma_close’: sound/soc/samsung/idma.c:327:11: error: ‘IRQ_I2S0’ undeclared (first use in this function) Signed-off-by: Tushar Behera <tushar.behera@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2012-04-08ARM: S5PV210: fix unused LDO supply field from wm8994_pdataKukjin Kim
According to commit 719a4240("mfd: Remove unused LDO supply field from WM8994 pdata"), the LDO supply field should be removed from the initializer. Cc: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2012-04-08Merge 3.2-rc1 into usb-linusGreg Kroah-Hartman
This is needed to catch the resume bug that was bothering lots of us from testing some XHCI bug fixes in the suspend/resume path. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-04-08fbdev: fix au1*fb buildsManuel Lauss
Commit 1c16697bf9d5b206cb0d2b905a54de5e077296be ("drivers/video/au*fb.c: use devm_ functions) introduced 2 build failures in the au1100fb and au1200fb drivers, fix them. Signed-off-by: Manuel Lauss <manuel.lauss@googlemail.com> Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
2012-04-08kyrofb: fix on x86_64Ondrej Zary
kyrofb is completely broken on x86_64 because the registers are defined as unsigned long. Change them to u32 to make the driver work. Tested with Hercules 3D Prophet 4000XT. Signed-off-by: Ondrej Zary <linux@rainbow-software.org> Acked-by: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
2012-04-08KVM: MMU: Improve iteration through sptes from rmapTakuya Yoshikawa
Iteration using rmap_next(), the actual body is pte_list_next(), is inefficient: every time we call it we start from checking whether rmap holds a single spte or points to a descriptor which links more sptes. In the case of shadow paging, this quadratic total iteration cost is a problem. Even for two dimensional paging, with EPT/NPT on, in which we almost always have a single mapping, the extra checks at the end of the iteration should be eliminated. This patch fixes this by introducing rmap_iterator which keeps the iteration context for the next search. Furthermore the implementation of rmap_next() is splitted into two functions, rmap_get_first() and rmap_get_next(), to avoid repeatedly checking whether the rmap being iterated on has only one spte. Although there seemed to be only a slight change for EPT/NPT, the actual improvement was significant: we observed that GET_DIRTY_LOG for 1GB dirty memory became 15% faster than before. This is probably because the new code is easy to make branch predictions. Note: we just remove pte_list_next() because we can think of parent_ptes as a reverse mapping. Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp> Signed-off-by: Avi Kivity <avi@redhat.com>
2012-04-08KVM: MMU: Make pte_list_desc fit cache lines wellTakuya Yoshikawa
We have PTE_LIST_EXT + 1 pointers in this structure and these 40/20 bytes do not fit cache lines well. Furthermore, some allocators may use 64/32-byte objects for the pte_list_desc cache. This patch solves this problem by changing PTE_LIST_EXT from 4 to 3. For shadow paging, the new size is still large enough to hold both the kernel and process mappings for usual anonymous pages. For file mappings, there may be a slight change in the cache usage. Note: with EPT/NPT we almost always have a single spte in each reverse mapping and we will not see any change by this. Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp> Signed-off-by: Avi Kivity <avi@redhat.com>
2012-04-08KVM: x86: add paging gcc optimizationDavidlohr Bueso
Since most guests will have paging enabled for memory management, add likely() optimization around CR0.PG checks. Signed-off-by: Davidlohr Bueso <dave@gnu.org> Signed-off-by: Avi Kivity <avi@redhat.com>
2012-04-08KVM: VMX: Auto-load on CPUs with VMXJosh Triplett
Enable x86 feature-based autoloading for the kvm-intel module on CPUs with X86_FEATURE_VMX. Signed-off-by: Josh Triplett <josh@joshtriplett.org> Acked-By: Kay Sievers <kay@vrfy.org> Signed-off-by: Avi Kivity <avi@redhat.com>
2012-04-08powerpc/kvm: Fix magic page vs. 32-bit RTAS on ppc64Benjamin Herrenschmidt
When the kernel calls into RTAS, it switches to 32-bit mode. The magic page was is longer accessible in that case, causing the patched instructions in the RTAS call wrapper to crash. This fixes it by making available a 32-bit mapping of the magic page in that case. This mapping is flushed whenever we switch the kernel back to 64-bit mode. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> [agraf: add a check if the magic page is mapped] Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Avi Kivity <avi@redhat.com>
2012-04-08KVM: PPC: Ignore unhalt request from kvm_vcpu_blockAlexander Graf
When running kvm_vcpu_block and it realizes that the CPU is actually good to run, we get a request bit set for KVM_REQ_UNHALT. Right now, there's nothing we can do with that bit, so let's unset it right after the call again so we don't get confused in our later checks for pending work. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Avi Kivity <avi@redhat.com>
2012-04-08KVM: PPC: Book3s: PR: Add HV traps so we can run in HV=1 mode on p7Alexander Graf
When running PR KVM on a p7 system in bare metal, we get HV exits instead of normal supervisor traps. Semantically they are identical though and the HSRR vs SRR difference is already taken care of in the exit code. So all we need to do is handle them in addition to our normal exits. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Avi Kivity <avi@redhat.com>
2012-04-08KVM: PPC: Emulate tw and td instructionsAlexander Graf
There are 4 conditional trapping instructions: tw, twi, td, tdi. The ones with an i take an immediate comparison, the others compare two registers. All of them arrive in the emulator when the condition to trap was successfully fulfilled. Unfortunately, we were only implementing the i versions so far, so let's also add support for the other two. This fixes kernel booting with recents book3s_32 guest kernels. Reported-by: Jörg Sommer <joerg@alea.gnuu.de> Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Avi Kivity <avi@redhat.com>
2012-04-08KVM: PPC: Pass EA to updating emulation opsAlexander Graf
When emulating updating load/store instructions (lwzu, stwu, ...) we need to write the effective address of the load/store into a register. Currently, we write the physical address in there, which is very wrong. So instead let's save off where the virtual fault was on MMIO and use that information as value to put into the register. While at it, also move the XOP variants of the above instructions to the new scheme of using the already known vaddr instead of calculating it themselves. Reported-by: Jörg Sommer <joerg@alea.gnuu.de> Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Avi Kivity <avi@redhat.com>
2012-04-08KVM: PPC: Work around POWER7 DABR corruption problemPaul Mackerras
It turns out that on POWER7, writing to the DABR can cause a corrupted value to be written if the PMU is active and updating SDAR in continuous sampling mode. To work around this, we make sure that the PMU is inactive and SDAR updates are disabled (via MMCRA) when we are context-switching DABR. When the guest sets DABR via the H_SET_DABR hypercall, we use a slightly different workaround, which is to read back the DABR and write it again if it got corrupted. While we are at it, make it consistent that the saving and restoring of the guest's non-volatile GPRs and the FPRs are done with the guest setup of the PMU active. Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Avi Kivity <avi@redhat.com>
2012-04-08KVM: PPC: Book 3S: Fix compilation for !HV configsPaul Mackerras
Commits 2f5cdd5487 ("KVM: PPC: Book3S HV: Make secondary threads more robust against stray IPIs") and 1c2066b0f7 ("KVM: PPC: Book3S HV: Make virtual processor area registration more robust") added fields to struct kvm_vcpu_arch inside #ifdef CONFIG_KVM_BOOK3S_64_HV regions, and added lines to arch/powerpc/kernel/asm-offsets.c to generate assembler constants for their offsets. Unfortunately this led to compile errors on Book 3S machines for configs that had KVM enabled but not CONFIG_KVM_BOOK3S_64_HV. This fixes the problem by moving the offending lines inside #ifdef CONFIG_KVM_BOOK3S_64_HV regions. Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Avi Kivity <avi@redhat.com>
2012-04-08Restore guest CR after exit timing calculationBharat Bhushan
No instruction which can change Condition Register (CR) should be executed after Guest CR is loaded. So the guest CR is restored after the Exit Timing in lightweight_exit executes cmpw, which can clobber CR. Signed-off-by: Bharat Bhushan <bharat.bhushan@freescale.com> Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Avi Kivity <avi@redhat.com>
2012-04-08KVM: PPC: Book3S HV: Report stolen time to guest through dispatch trace logPaul Mackerras
This adds code to measure "stolen" time per virtual core in units of timebase ticks, and to report the stolen time to the guest using the dispatch trace log (DTL). The guest can register an area of memory for the DTL for a given vcpu. The DTL is a ring buffer where KVM fills in one entry every time it enters the guest for that vcpu. Stolen time is measured as time when the virtual core is not running, either because the vcore is not runnable (e.g. some of its vcpus are executing elsewhere in the kernel or in userspace), or when the vcpu thread that is running the vcore is preempted. This includes time when all the vcpus are idle (i.e. have executed the H_CEDE hypercall), which is OK because the guest accounts stolen time while idle as idle time. Each vcpu keeps a record of how much stolen time has been reported to the guest for that vcpu so far. When we are about to enter the guest, we create a new DTL entry (if the guest vcpu has a DTL) and report the difference between total stolen time for the vcore and stolen time reported so far for the vcpu as the "enqueue to dispatch" time in the DTL entry. Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Avi Kivity <avi@redhat.com>
2012-04-08KVM: PPC: Book3S HV: Make virtual processor area registration more robustPaul Mackerras
The PAPR API allows three sorts of per-virtual-processor areas to be registered (VPA, SLB shadow buffer, and dispatch trace log), and furthermore, these can be registered and unregistered for another virtual CPU. Currently we just update the vcpu fields pointing to these areas at the time of registration or unregistration. If this is done on another vcpu, there is the possibility that the target vcpu is using those fields at the time and could end up using a bogus pointer and corrupting memory. This fixes the race by making the target cpu itself do the update, so we can be sure that the update happens at a time when the fields aren't being used. Each area now has a struct kvmppc_vpa which is used to manage these updates. There is also a spinlock which protects access to all of the kvmppc_vpa structs, other than to the pinned_addr fields. (We could have just taken the spinlock when using the vpa, slb_shadow or dtl fields, but that would mean taking the spinlock on every guest entry and exit.) This also changes 'struct dtl' (which was undefined) to 'struct dtl_entry', which is what the rest of the kernel uses. Thanks to Michael Ellerman <michael@ellerman.id.au> for pointing out the need to initialize vcpu->arch.vpa_update_lock. Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Avi Kivity <avi@redhat.com>
2012-04-08KVM: PPC: Book3S HV: Make secondary threads more robust against stray IPIsPaul Mackerras
Currently on POWER7, if we are running the guest on a core and we don't need all the hardware threads, we do nothing to ensure that the unused threads aren't executing in the kernel (other than checking that they are offline). We just assume they're napping and we don't do anything to stop them trying to enter the kernel while the guest is running. This means that a stray IPI can wake up the hardware thread and it will then try to enter the kernel, but since the core is in guest context, it will execute code from the guest in hypervisor mode once it turns the MMU on, which tends to lead to crashes or hangs in the host. This fixes the problem by adding two new one-byte flags in the kvmppc_host_state structure in the PACA which are used to interlock between the primary thread and the unused secondary threads when entering the guest. With these flags, the primary thread can ensure that the unused secondaries are not already in kernel mode (i.e. handling a stray IPI) and then indicate that they should not try to enter the kernel if they do get woken for any reason. Instead they will go into KVM code, find that there is no vcpu to run, acknowledge and clear the IPI and go back to nap mode. Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Avi Kivity <avi@redhat.com>
2012-04-08KVM: PPC: Save/Restore CR over vcpu_runAlexander Graf
On PPC, CR2-CR4 are nonvolatile, thus have to be saved across function calls. We didn't respect that for any architecture until Paul spotted it in his patch for Book3S-HV. This patch saves/restores CR for all KVM capable PPC hosts. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Avi Kivity <avi@redhat.com>
2012-04-08KVM: PPC: Book3s: PR: Add SPAPR H_BULK_REMOVE supportMatt Evans
SPAPR support includes various in-kernel hypercalls, improving performance by cutting out the exit to userspace. H_BULK_REMOVE is implemented in this patch. Signed-off-by: Matt Evans <matt@ozlabs.org> Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Avi Kivity <avi@redhat.com>
2012-04-08KVM: PPC: Booke: only prepare to enter when we enterAlexander Graf
So far, we've always called prepare_to_enter even when all we did was return to the host. This patch changes that semantic to only call prepare_to_enter when we actually want to get back into the guest. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Avi Kivity <avi@redhat.com>
2012-04-08KVM: PPC: booke: Reinject performance monitor interruptsAlexander Graf
When we get a performance monitor interrupt, we need to make sure that the host receives it. So reinject it like we reinject the other host destined interrupts. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Avi Kivity <avi@redhat.com>
2012-04-08KVM: PPC: booke: expose good state on irq reinjectAlexander Graf
When reinjecting an interrupt into the host interrupt handler after we're back in host kernel land, we need to tell the kernel where the interrupt happened. We can't tell it that we were in guest state, because that might lead to random code walking host addresses. So instead, we tell it that we came from the interrupt reinject code. This helps getting reasonable numbers out of perf. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Avi Kivity <avi@redhat.com>
2012-04-08KVM: PPC: booke: Support perfmon interruptsAlexander Graf
When during guest context we get a performance monitor interrupt, we currently bail out and oops. Let's route it to its correct handler instead. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Avi Kivity <avi@redhat.com>
2012-04-08KVM: PPC: e500: fix typo in tlb codeAlexander Graf
The tlbncfg registers should be populated with their respective TLB's values. Fix the obvious typo. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Avi Kivity <avi@redhat.com>
2012-04-08KVM: PPC: bookehv: remove unused codeAlexander Graf
There was some unused code in the exit code path that must have been a leftover from earlier iterations. While it did no harm, it's superfluous and thus should be removed. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Avi Kivity <avi@redhat.com>
2012-04-08KVM: PPC: booke: add GS documentation for program interruptAlexander Graf
The comment for program interrupts triggered when using bookehv was misleading. Update it to mention why MSR_GS indicates that we have to inject an interrupt into the guest again, not emulate it. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Avi Kivity <avi@redhat.com>
2012-04-08KVM: PPC: booke: Readd debug abort code for machine checkAlexander Graf
When during guest execution we get a machine check interrupt, we don't know how to handle it yet. So let's add the error printing code back again that we dropped accidently earlier and tell user space that something went really wrong. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Avi Kivity <avi@redhat.com>
2012-04-08KVM: PPC: bookehv: add comment about shadow_msrAlexander Graf
For BookE HV the guest visible MSR is shared->msr and is identical to the MSR that is in use while the guest is running, because we can't trap reads from/to MSR. So shadow_msr is unused there. Indicate that with a comment. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Avi Kivity <avi@redhat.com>
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