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2009-09-10KVM: Grab pic lock in kvm_pic_clear_isr_ackMarcelo Tosatti1-0/+2
isr_ack is protected by kvm_pic->lock. Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2009-09-10KVM: Cleanup LAPIC interfaceJan Kiszka1-12/+0
None of the interface services the LAPIC emulation provides need to be exported to modules, and kvm_lapic_get_base is even totally unused today. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2009-09-10KVM: ppc: e500: Add MMUCFG and PVR emulationLiu Yu2-0/+5
Latest kernel started to use these two registers. Signed-off-by: Liu Yu <yu.liu@freescale.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2009-09-10KVM: ppc: e500: Directly pass pvr to guestLiu Yu3-5/+1
Signed-off-by: Liu Yu <yu.liu@freescale.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2009-09-10KVM: ppc: e500: Move to Book-3e MMU definitionsLiu Yu2-8/+8
According to commit 70fe3af8403f85196bb74f22ce4813db7dfedc1a. Signed-off-by: Liu Yu <yu.liu@freescale.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2009-09-10KVM: VMX: Fix reporting of unhandled EPT violationsAvi Kivity1-2/+2
Instead of returning -ENOTSUPP, exit normally but indicate the hardware exit reason. Signed-off-by: Avi Kivity <avi@redhat.com>
2009-09-10KVM: Cache pdptrsAvi Kivity7-13/+63
Instead of reloading the pdptrs on every entry and exit (vmcs writes on vmx, guest memory access on svm) extract them on demand. Signed-off-by: Avi Kivity <avi@redhat.com>
2009-09-10KVM: VMX: Simplify pdptr and cr3 managementAvi Kivity1-6/+15
Instead of reading the PDPTRs from memory after every exit (which is slow and wrong, as the PDPTRs are stored on the cpu), sync the PDPTRs from memory to the VMCS before entry, and from the VMCS to memory after exit. Do the same for cr3. Signed-off-by: Avi Kivity <avi@redhat.com>
2009-09-10KVM: VMX: Avoid duplicate ept tlb flush when setting cr3Avi Kivity1-1/+0
vmx_set_cr3() will call vmx_tlb_flush(), which will flush the ept context. So there is no need to call ept_sync_context() explicitly. Signed-off-by: Avi Kivity <avi@redhat.com>
2009-09-10KVM: do not register i8254 PIO regions until we are initializedGregory Haskins1-9/+8
We currently publish the i8254 resources to the pio_bus before the devices are fully initialized. Since we hold the pit_lock, its probably not a real issue. But lets clean this up anyway. Reported-by: Avi Kivity <avi@redhat.com> Signed-off-by: Gregory Haskins <ghaskins@novell.com> Acked-by: Chris Wright <chrisw@sous-sol.org> Signed-off-by: Avi Kivity <avi@redhat.com>
2009-09-10KVM: cleanup io_device codeGregory Haskins4-26/+58
We modernize the io_device code so that we use container_of() instead of dev->private, and move the vtable to a separate ops structure (theoretically allows better caching for multiple instances of the same ops structure) Signed-off-by: Gregory Haskins <ghaskins@novell.com> Acked-by: Chris Wright <chrisw@sous-sol.org> Signed-off-by: Avi Kivity <avi@redhat.com>
2009-09-10KVM: powerpc: fix some init/exit annotationsStephen Rothwell3-5/+5
Fixes a couple of warnings like this one: WARNING: arch/powerpc/kvm/kvm-440.o(.text+0x1e8c): Section mismatch in reference from the function kvmppc_44x_exit() to the function .exit.text:kvmppc_booke_exit() The function kvmppc_44x_exit() references a function in an exit section. Often the function kvmppc_booke_exit() has valid usage outside the exit section and the fix is to remove the __exit annotation of kvmppc_booke_exit. Also add some __init annotations on obvious routines. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Avi Kivity <avi@redhat.com>
2009-09-10KVM: SVM: Fold kvm_svm.h info svm.cAvi Kivity2-54/+40
kvm_svm.h is only included from svm.c, so fold it in. Signed-off-by: Avi Kivity <avi@redhat.com>
2009-09-10KVM: SVM: use explicit 64bit storage for sysenter valuesAndre Przywara2-4/+6
Since AMD does not support sysenter in 64bit mode, the VMCB fields storing the MSRs are truncated to 32bit upon VMRUN/#VMEXIT. So store the values in a separate 64bit storage to avoid truncation. [andre: fix amd->amd migration] Signed-off-by: Christoph Egger <christoph.egger@amd.com> Signed-off-by: Andre Przywara <andre.przywara@amd.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2009-09-10KVM: s390: streamline memslot handlingChristian Ehrhardt6-54/+62
This patch relocates the variables kvm-s390 uses to track guest mem addr/size. As discussed dropping the variables at struct kvm_arch level allows to use the common vcpu->request based mechanism to reload guest memory if e.g. changes via set_memory_region. The kick mechanism introduced in this series is used to ensure running vcpus leave guest state to catch the update. Signed-off-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2009-09-10KVM: s390: fix signal handlingChristian Ehrhardt1-1/+3
If signal pending is true we exit without updating kvm_run, userspace currently just does nothing and jumps to kvm_run again. Since we did not set an exit_reason we might end up with a random one (whatever was the last exit). Therefore it was possible to e.g. jump to the psw position the last real interruption set. Setting the INTR exit reason ensures that no old psw data is swapped in on reentry. Signed-off-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2009-09-10KVM: s390: infrastructure to kick vcpus out of guest stateChristian Ehrhardt5-27/+54
To ensure vcpu's come out of guest context in certain cases this patch adds a s390 specific way to kick them out of guest context. Currently it kicks them out to rerun the vcpu_run path in the s390 code, but the mechanism itself is expandable and with a new flag we could also add e.g. kicks to userspace etc. Signed-off-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2009-09-10KVM: ia64: Correct itc_offset calculationsJes Sorensen1-1/+1
Init the itc_offset for all possible vCPUs. The current code by mistake ends up only initializing the offset on vCPU 0. Spotted by Gleb Natapov. Signed-off-by: Jes Sorensen <jes@sgi.com> Acked-by : Xiantao Zhang <xiantao.zhang@intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2009-09-10KVM: Allow PIT emulation without speaker portJan Kiszka3-8/+20
The in-kernel speaker emulation is only a dummy and also unneeded from the performance point of view. Rather, it takes user space support to generate sound output on the host, e.g. console beeps. To allow this, introduce KVM_CREATE_PIT2 which controls in-kernel speaker port emulation via a flag passed along the new IOCTL. It also leaves room for future extensions of the PIT configuration interface. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2009-09-10KVM: irqfdGregory Haskins3-1/+3
KVM provides a complete virtual system environment for guests, including support for injecting interrupts modeled after the real exception/interrupt facilities present on the native platform (such as the IDT on x86). Virtual interrupts can come from a variety of sources (emulated devices, pass-through devices, etc) but all must be injected to the guest via the KVM infrastructure. This patch adds a new mechanism to inject a specific interrupt to a guest using a decoupled eventfd mechnanism: Any legal signal on the irqfd (using eventfd semantics from either userspace or kernel) will translate into an injected interrupt in the guest at the next available interrupt window. Signed-off-by: Gregory Haskins <ghaskins@novell.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2009-09-10KVM: Move common KVM Kconfig items to new file virt/kvm/KconfigAvi Kivity4-17/+6
Reduce Kconfig code duplication. Signed-off-by: Avi Kivity <avi@redhat.com>
2009-09-10KVM: Drop interrupt shadow when single stepping should be done only on VMXGleb Natapov2-3/+8
The problem exists only on VMX. Also currently we skip this step if there is pending exception. The patch fixes this too. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2009-09-10KVM: cleanup arch/x86/kvm/MakefileChristoph Hellwig1-19/+13
Use proper foo-y style list additions to cleanup all the conditionals, move module selection after compound object selection and remove the superflous comment. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Avi Kivity <avi@redhat.com>
2009-09-10KVM: x86 emulator: fix jmp far decoding (opcode 0xea)Avi Kivity1-1/+1
The jump target should not be sign extened; use an unsigned decode flag. Cc: stable@kernel.org Signed-off-by: Avi Kivity <avi@redhat.com>
2009-09-10KVM: x86 emulator: Implement zero-extended immediate decodingAvi Kivity1-0/+15
Absolute jumps use zero extended immediate operands. Cc: stable@kernel.org Signed-off-by: Avi Kivity <avi@redhat.com>
2009-09-10KVM: fix cpuid E2BIG handling for extended request typesMark McLoughlin1-0/+4
If we run out of cpuid entries for extended request types we should return -E2BIG, just like we do for the standard request types. Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2009-09-10KVM: Use MSR names in place of addressJaswinder Singh Rajput1-2/+2
Replace 0xc0010010 with MSR_K8_SYSCFG and 0xc0010015 with MSR_K7_HWCR. Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2009-09-10KVM: Add MCE supportHuang Ying3-24/+202
The related MSRs are emulated. MCE capability is exported via extension KVM_CAP_MCE and ioctl KVM_X86_GET_MCE_CAP_SUPPORTED. A new vcpu ioctl command KVM_X86_SETUP_MCE is used to setup MCE emulation such as the mcg_cap. MCE is injected via vcpu ioctl command KVM_X86_SET_MCE. Extended machine-check state (MCG_EXT_P) and CMCI are not implemented. Signed-off-by: Huang Ying <ying.huang@intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2009-09-10KVM: Replace MSR_IA32_TIME_STAMP_COUNTER with MSR_IA32_TSC of msr-index.hJaswinder Singh Rajput4-9/+6
Use standard msr-index.h's MSR declaration. MSR_IA32_TSC is better than MSR_IA32_TIME_STAMP_COUNTER as it also solves 80 column issue. Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2009-09-10KVM: VMX: Properly handle software interrupt re-injection in real modeGleb Natapov1-2/+6
When reinjecting a software interrupt or exception, use the correct instruction length provided by the hardware instead of a hardcoded 1. Fixes problems running the suse 9.1 livecd boot loader. Problem introduced by commit f0a3602c20 ("KVM: Move interrupt injection logic to x86.c"). Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2009-09-05powerpc: Fix i8259 interrupt driver kernel crash on ML510Roderick Colenbrander1-1/+0
This patch fixes a null pointer exception caused by removal of 'ack()' for level interrupts in the Xilinx interrupt driver. A recent change to the xilinx interrupt controller removed the ack hook for level irqs. Signed-off-by: Roderick Colenbrander <thunderbird2k@gmail.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-05Merge branch 'release' of ↵Linus Torvalds2-4/+8
git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6 * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6: [IA64] fix csum_ipv6_magic() [IA64] Fix warning in dma-mapping.c
2009-09-05Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6Linus Torvalds4-7/+6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6: sparc64: Fix bootup with mcount in some configs. sparc64: Kill spurious NMI watchdog triggers by increasing limit to 30 seconds.
2009-09-05Merge branch 'perfcounters-fixes-for-linus' of ↵Linus Torvalds1-3/+3
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'perfcounters-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: perf_counter/powerpc: Fix cache event codes for POWER7 perf_counter: Fix /0 bug in swcounters perf_counters: Increase paranoia level
2009-09-04sparc64: Fix bootup with mcount in some configs.David S. Miller3-6/+5
Functions invoked early when booting up a cpu can't use tracing because mcount requires a valid 'current_thread_info()' and TLB mappings to be setup. The code path of sun4v_register_mondo_queues --> register_one_mondo is one such case. sun4v_register_mondo_queues already has the necessary 'notrace' annotation, but register_one_mondo does not. Normally register_one_mondo is inlined so the bug doesn't trigger, but with some config/compiler combinations, it won't be so we must properly mark it notrace. While we're here, add 'notrace' annoations to prom_printf and prom_halt so that early error handling won't have the same problem. Reported-by: Alexander Beregalov <a.beregalov@gmail.com> Reported-by: Leif Sawyer <lsawyer@gci.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-09-03sparc64: Kill spurious NMI watchdog triggers by increasing limit to 30 seconds.David S. Miller1-1/+1
This is a compromise and a temporary workaround for bootup NMI watchdog triggers some people see with qla2xxx devices present. This happens when, for example: CPU 0 is in the driver init and looping submitting mailbox commands to load the firmware, then waiting for completion. CPU 1 is receiving the device interrupts. CPU 1 is where the NMI watchdog triggers. CPU 0 is submitting mailbox commands fast enough that by the time CPU 1 returns from the device interrupt handler, a new one is pending. This sequence runs for more than 5 seconds. The problematic case is CPU 1's timer interrupt running when the barrage of device interrupts begin. Then we have: timer interrupt return for softirq checking pending, thus enable interrupts qla2xxx interrupt return qla2xxx interrupt return ... 5+ seconds pass final qla2xxx interrupt for fw load return run timer softirq return At some point in the multi-second qla2xxx interrupt storm we trigger the NMI watchdog on CPU 1 from the NMI interrupt handler. The timer softirq, once we get back to running it, is smart enough to run the timer work enough times to make up for the missed timer interrupts. However, the NMI watchdogs (both x86 and sparc) use the timer interrupt count to notice the cpu is wedged. But in the above scenerio we'll receive only one such timer interrupt even if we last all the way back to running the timer softirq. The default watchdog trigger point is only 5 seconds, which is pretty low (the softwatchdog triggers at 60 seconds). So increase it to 30 seconds for now. Signed-off-by: David S. Miller <davem@davemloft.net>
2009-09-03perf_counter/powerpc: Fix cache event codes for POWER7Paul Mackerras1-3/+3
I had the codes for L1 D-cache load accesses and misses swapped around, and the wrong codes for LL-cache accesses and misses. This corrects them. Reported-by: Corey Ashford <cjashfor@linux.vnet.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: <stable@kernel.org> LKML-Reference: <19103.8514.709300.585484@cargo.ozlabs.ibm.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-09-02[IA64] fix csum_ipv6_magic()Jiri Bohac1-3/+5
The 32-bit parameters (len and csum) of csum_ipv6_magic() are passed in 64-bit registers in2 and in4. The high order 32 bits of the registers were never cleared, and garbage was sometimes calculated into the checksum. Fix this by clearing the high order 32 bits of these registers. Signed-off-by: Jiri Bohac <jbohac@suse.cz> Signed-off-by: Tony Luck <tony.luck@intel.com>
2009-09-02[IA64] Fix warning in dma-mapping.cLuck, Tony1-1/+3
arch/ia64/kernel/dma-mapping.c:14: warning: control reaches end of non-void function arch/ia64/kernel/dma-mapping.c:14: warning: no return statement in function returning non-void This warning was introduced by commit: 390bd132b2831a2ad0268e84bffbfc0680debfe5 Add dma_debug_init() for ia64 Signed-off-by: Tony Luck <tony.luck@intel.com>
2009-08-28parisc: fix warning in traps.cGrant Grundler1-1/+1
On Tue, Aug 18, 2009 at 01:45:17PM -0400, John David Anglin wrote: > CC arch/parisc/kernel/traps.o > arch/parisc/kernel/traps.c: In function 'handle_interruption': > arch/parisc/kernel/traps.c:535:18: warning: operation on 'regs->iasq[0]' > may be undefined Yes - Line 535 should use both [0] and [1]. Reported-by: John David Anglin <dave@hiauly1.hia.nrc.ca> Signed-off-by: Grant Grundler <grundler@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@mcmartin.ca> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-08-28Merge branch 'x86-fixes-for-linus' of ↵Linus Torvalds2-0/+12
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86: Fix vSMP boot crash x86, xen: Initialize cx to suppress warning x86, xen: Suppress WP test on Xen
2009-08-26Merge branch 'merge' of ↵Linus Torvalds2-136/+79
git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: powerpc/ps3: Update ps3_defconfig powerpc/ps3: Add missing check for PS3 to rtc-ps3 platform device registration
2009-08-27powerpc/ps3: Update ps3_defconfigGeoff Levand1-136/+75
Update ps3_defconfig. o Refresh for 2.6.31. o Remove MTD support. o Add more HID drivers. Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-08-27powerpc/ps3: Add missing check for PS3 to rtc-ps3 platform device registrationGeert Uytterhoeven1-0/+4
On non-PS3, we get: | kernel BUG at drivers/rtc/rtc-ps3.c:36! because the rtc-ps3 platform device is registered unconditionally in a kernel with builtin support for PS3. Reported-by: Sachin Sant <sachinp@in.ibm.com> Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Acked-by: Geoff Levand <geoffrey.levand@am.sony.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-08-26m68k,m68knommu: Wire up rt_tgsigqueueinfo and perf_counter_openGeert Uytterhoeven3-1/+7
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Greg Ungerer <gerg@uclinux.org>
2009-08-26m68k: Fix redefinition of pgprot_noncachedAlexey Dobriyan1-2/+1
arch/m68k/include/asm/pgtable_mm.h:148:1: warning: "pgprot_noncached" redefined In file included from arch/m68k/include/asm/pgtable_mm.h:138, from arch/m68k/include/asm/pgtable.h:4, from include/linux/mm.h:40, from include/linux/pagemap.h:7, from include/linux/blkdev.h:12, from arch/m68k/emu/nfblock.c:17: include/asm-generic/pgtable.h:133:1: warning: this is the location of the previous definition pgprot_noncached() should be defined _before_ including asm-generic/pgtable.h Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2009-08-26arch/m68k/include/asm/motorola_pgalloc.h: fix kunmap argAndrew Morton1-6/+4
arch/m68k/include/asm/motorola_pgalloc.h: In function 'pte_alloc_one': arch/m68k/include/asm/motorola_pgalloc.h:44: warning: passing argument 1 of 'kunmap' from incompatible pointer type Also, remove unneeded test for kmap() failure. Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2009-08-26m68k: cnt reaches -1, not 0Roel Kluin1-2/+4
With the postfix decrement cnt reaches -1 rather than 0. Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2009-08-26x86: Fix vSMP boot crashYinghai Lu1-0/+10
2.6.31-rc7 does not boot on vSMP systems: [ 8.501108] CPU31: Thermal monitoring enabled (TM1) [ 8.501127] CPU 31 MCA banks SHD:2 SHD:3 SHD:5 SHD:6 SHD:8 [ 8.650254] CPU31: Intel(R) Xeon(R) CPU E5540 @ 2.53GHz stepping 04 [ 8.710324] Brought up 32 CPUs [ 8.713916] Total of 32 processors activated (162314.96 BogoMIPS). [ 8.721489] ERROR: parent span is not a superset of domain->span [ 8.727686] ERROR: domain->groups does not contain CPU0 [ 8.733091] ERROR: groups don't span domain->span [ 8.737975] ERROR: domain->cpu_power not set [ 8.742416] Ravikiran Thirumalai bisected it to: | commit 2759c3287de27266e06f1f4e82cbd2d65f6a044c | x86: don't call read_apic_id if !cpu_has_apic The problem is that on vSMP systems the CPUID derived initial-APICIDs are overlapping - so we need to fall back on hard_smp_processor_id() which reads the local APIC. Both come from the hardware (influenced by firmware though) so it's a tough call which one to trust. Doing the quirk expresses the vSMP property properly and also does not affect other systems, so we go for this solution instead of a revert. Reported-and-Tested-by: Ravikiran Thirumalai <kiran@scalex86.org> Signed-off-by: Yinghai Lu <yinghai@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Cyrill Gorcunov <gorcunov@gmail.com> Cc: Shai Fultheim <shai@scalex86.org> Cc: Suresh Siddha <suresh.b.siddha@intel.com> LKML-Reference: <4A944D3C.5030100@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-08-25Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6Linus Torvalds12-140/+167
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6: sparc64: Validate linear D-TLB misses. sparc64: Update defconfig. sparc32: Update defconfig. sparc32: Kill trap table freeing code. sparc: sys32.S incorrect compat-layer splice() system call sparc: Use page_fault_out_of_memory() for VM_FAULT_OOM. sparc64: Sign extend length arg to truncate syscalls when compat. sparc: Fix cleanup crash in bbc_envctrl_cleanup()
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