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2009-10-22Merge branch 'kvm-updates/2.6.32' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds
* 'kvm-updates/2.6.32' of git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: Prevent kvm_init from corrupting debugfs structures KVM: MMU: fix pointer cast KVM: use proper hrtimer function to retrieve expiration time
2009-10-22Merge branch 'sh/for-2.6.32' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6 * 'sh/for-2.6.32' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: sh: Kill off stray HAVE_FTRACE_SYSCALLS reference. sh: Remove BKL from landisk gio. sh: disabled cache handling fix. sh: Fix up single page flushing to use PAGE_SIZE.
2009-10-22Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: crypto: aesni-intel - Fix irq_fpu_usable usage crypto: padlock-sha - Fix stack alignment
2009-10-20crypto: aesni-intel - Fix irq_fpu_usable usageHuang Ying
When renaming kernel_fpu_using to irq_fpu_usable, the semantics of the function is changed too, from mesuring whether kernel is using FPU, that is, the FPU is NOT available, to measuring whether FPU is usable, that is, the FPU is available. But the usage of irq_fpu_usable in aesni-intel_glue.c is not changed accordingly. This patch fixes this. Signed-off-by: Huang Ying <ying.huang@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-10-16KVM: MMU: fix pointer castFrederik Deweerdt
On a 32 bits compile, commit 3da0dd433dc399a8c0124d0614d82a09b6a49bce introduced the following warnings: arch/x86/kvm/mmu.c: In function ‘kvm_set_pte_rmapp’: arch/x86/kvm/mmu.c:770: warning: cast to pointer from integer of different size arch/x86/kvm/mmu.c: In function ‘kvm_set_spte_hva’: arch/x86/kvm/mmu.c:849: warning: cast from pointer to integer of different size The following patch uses 'unsigned long' instead of u64 to match the pointer size on both arches. Signed-off-by: Frederik Deweerdt <frederik.deweerdt@xprog.eu> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2009-10-16KVM: use proper hrtimer function to retrieve expiration timeMarcelo Tosatti
hrtimer->base can be temporarily NULL due to racing hrtimer_start. See switch_hrtimer_base/lock_hrtimer_base. Use hrtimer_get_remaining which is robust against it. CC: stable@kernel.org Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2009-10-16sh: Kill off stray HAVE_FTRACE_SYSCALLS reference.Paul Mundt
This seems to have popped back in via some merge damage. Kill it off. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-10-16sh: Remove BKL from landisk gio.Thomas Gleixner
The open function got the BKL via the big push down. Replace it by preempt_enable/disable as this is sufficient for an UP machine. The ioctl can be unlocked because there is no functionality which requires serialization. The usage by multiple callers is broken with and without the BKL due to the local static variable addr. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-10-16sh: disabled cache handling fix.Magnus Damm
Add code to handle the cache disabled case. Fixes breakage introduced by 37443ef3f0406e855e169c87ae3f4ffb4b6ff635 ("sh: Migrate SH-4 cacheflush ops to function pointers."). Without this patch configuring caches off with CONFIG_CACHE_OFF=y makes kfr2r09 and migo-r lock up in fbdev deferred io or early user space. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-10-16sh: Fix up single page flushing to use PAGE_SIZE.Valentin Sitdikov
Presently The SH-4 cache flushing code uses flush_cache_4096() for most of the real flushing work, which breaks down to a fixed 4096 unroll and increment. Not only is this sub-optimal for larger page sizes, it's also uncovered a bug in sh4_flush_dcache_page() when large page sizes are used and we have no cache aliases -- resulting in only a part of the page's D-cache lines being written back. Signed-off-by: Valentin Sitdikov <valentin.sitdikov@siemens.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-10-15Merge branch 'x86-fixes-for-linus' of ↵Linus Torvalds
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: Revert "x86: linker script syntax nits" x86, perf_event: Rename 'performance counter interrupt'
2009-10-15Merge branch 'merge' of ↵Linus Torvalds
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/pci: Fix MODPOST warning powerpc/oprofile: Add ppc750 CL as supported by oprofile powerpc: warning: allocated section `.data_nosave' not in segment powerpc/kgdb: Fix build failure caused by "kgdb.c: unused variable 'acc'" powerpc: Fix hypervisor TLB batching powerpc/mm: Fix hang accessing top of vmalloc space powerpc: Fix memory leak in axon_msi.c powerpc/pmac: Fix issues with sleep on some powerbooks powerpc64/ftrace: use PACA to retrieve TOC in mod_return_to_handler powerpc/ftrace: show real return addresses in modules
2009-10-15Merge branch 'omap-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6 * 'omap-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6: OMAP2xxx clock: set up clockdomain pointer in struct clk OMAP: Fix race condition with autodeps omap: McBSP: Fix incorrect receiver stop in omap_mcbsp_stop omap: Initialization of SDRC params on Zoom2 omap: RX-51: Drop I2C-1 speed to 2200 omap: SDMA: Fixing bug in omap_dma_set_global_params() omap: CONFIG_ISP1301_OMAP redefined in Beagle defconfig
2009-10-15Revert "x86: linker script syntax nits"Ingo Molnar
This reverts commit e9a63a4e559fbdc522072281d05e6b13c1022f4b. This breaks older binutils, where sink-less asserts are broken. See this commit for further details: d2ba8b2: x86: Fix assert syntax in vmlinux.lds.S Acked-by: "H. Peter Anvin" <hpa@zytor.com> Acked-by: Sam Ravnborg <sam@ravnborg.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> LKML-Reference: <4AD6523D.5030909@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-15Merge branch 'linus' into x86/urgentIngo Molnar
Merge reason: pull in latest, to be able to revert a patch there. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-15Merge commit 'ftrace/ppc' into mergeBenjamin Herrenschmidt
2009-10-14Merge branch '2_6_32rc4_fixes' of git://git.pwsan.com/linux-2.6 into ↵Tony Lindgren
omap-fixes-for-linus
2009-10-14OMAP2xxx clock: set up clockdomain pointer in struct clkPaul Walmsley
clock24xx.c is missing a omap2_init_clk_clkdm() in its omap2_clk_init() function. Among other bad effects, this causes the OMAP hwmod layer to oops on boot. Thanks to Carlos Aguiar <carlos.aguiar@indt.org.br> and Stefano Panella <Stefano.Panella@csr.com> for reporting this bug. Thanks to Tony Lindgren <tony@atomide.com> for N800 booting advice. Signed-off-by: Paul Walmsley <paul@pwsan.com> Cc: Carlos Aguiar <carlos.aguiar@indt.org.br> Cc: Stefano Panella <Stefano.Panella@csr.com> Cc: Tony Lindgren <tony@atomide.com>
2009-10-14OMAP: Fix race condition with autodepsKalle Jokiniemi
There is a possible race condition in clockdomain code handling hw supported idle transitions. When multiple autodeps dependencies are being added or removed, a transition of still remaining dependent powerdomain can result in false readings of the state counter. This is especially fatal for off mode state counter, as it could result in a driver not noticing a context loss. Fixed by disabling hw supported state transitions when autodeps are being changed. Signed-off-by: Kalle Jokiniemi <kalle.jokiniemi@digia.com> Signed-off-by: Paul Walmsley <paul@pwsan.com>
2009-10-14Merge branch 'topic/x86-lds-nits' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/frob/linux-2.6-roland * 'topic/x86-lds-nits' of git://git.kernel.org/pub/scm/linux/kernel/git/frob/linux-2.6-roland: x86: linker script syntax nits
2009-10-14Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6: watchdog: Fix rio watchdog probe function sparc64: Set IRQF_DISABLED on LDC channel IRQs. sparc64: Fix D-cache flushing on swapin from SW devices. sparc64: Fix niagara2 perf IRQ bits.
2009-10-14Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6Linus Torvalds
* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6: [S390] sclp_vt220 build fix [S390] cio: change misleading console logic [S390] call home support: fix proc handler [S390] dasd: use idal for device characteristics [S390] Add highgprs facility to /proc/cpuinfo [S390] dasd: fix locking bug [S390] tape390: Fix request queue handling in block driver [S390] hypfs: Use subcode 6 if subcode 7 is not available
2009-10-14Merge branch 'sh/for-2.6.32' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6 * 'sh/for-2.6.32' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: sh: Fix a TRACE_IRQS_OFF typo. sh: Optimize the setup_rt_frame() I-cache flush. sh: Populate initial secondary CPU info from boot_cpu_data. sh: Tidy up SMP cpuinfo. sh: Use boot_cpu_data for FPU tests in sigcontext paths. sh: ftrace: Fix up syscall tracepoint support. sh: force dcache flush if dcache_dirty bit set. sh: update die() output.
2009-10-14Merge branch 'sched-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: sched: Fix missing kernel-doc notation Revert "x86, timers: Check for pending timers after (device) interrupts" sched: Update the clock of runqueue select_task_rq() selected
2009-10-14Merge branch 'x86-fixes-for-linus' of ↵Linus Torvalds
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/paravirt: Use normal calling sequences for irq enable/disable x86: fix kernel panic on 32 bits when profiling x86: Fix Suspend to RAM freeze on Acer Aspire 1511Lmi laptop x86, vmi: Mark VMI deprecated and schedule it for removal
2009-10-14x86: linker script syntax nitsRoland McGrath
The linker scripts grew some use of weirdly wrong linker script syntax. It happens to work, but it's not what the syntax is documented to be. Clean it up to use the official syntax. Signed-off-by: Roland McGrath <roland@redhat.com> CC: Ian Lance Taylor <iant@google.com>
2009-10-14omap: McBSP: Fix incorrect receiver stop in omap_mcbsp_stopJarkko Nikula
This small typo written by author causes that McBSP receiver is disabled on OMAP2430 and OMAP3430 even if only transmitter is stopped. This was noted with ALSA SoC where simultaneous recording halted if playback was stopped first. Signed-off-by: Jarkko Nikula <jhnikula@gmail.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-10-14omap: Initialization of SDRC params on Zoom2Teerth Reddy
This patch initializes the correct SDRC settings required for DVFS on Zoom2. Signed-off-by: Teerth Reddy <teerth@ti.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-10-14omap: RX-51: Drop I2C-1 speed to 2200Aaro Koskinen
The I2C-1 bus frequency on RX-51 should be 2.2 MHz. The speed is limited by TWL5030/GAIA; a higher speed could lead to errors on the interface. The maximum speed depends on the system clock for GAIA: 2.2 MHz (if 19.2 MHz), 2.4 MHz (26 MHz) or 2.9 MHz (38.4 MHz). Signed-off-by: Aaro Koskinen <aaro.koskinen@nokia.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-10-14omap: SDMA: Fixing bug in omap_dma_set_global_params()Anuj Aggarwal
Argument tparams was not being used to program global register GCR.HI_THREAD_RESERVED. This patch fixes the same. Signed-off-by: Anuj Aggarwal <anuj.aggarwal@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-10-14omap: CONFIG_ISP1301_OMAP redefined in Beagle defconfigSanjeev Premi
The symbol CONFIG_ISP1301_OMAP was defined twice in the defconfig. This was causing the warning: arch/arm/configs/omap3_beagle_defconfig:972:warning: override: reassigning to symbol ISP1301_OMAP Signed-off-by: Sanjeev Premi <premi@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-10-14x86, perf_event: Rename 'performance counter interrupt'Li Hong
In 'cdd6c482c9ff9c55475ee7392ec8f672eddb7be6', we renamed Performance Counters -> Performance Events. The name showed up in /proc/interrupts also needs a change. I use PMI (Performance monitoring interrupt) here, since it is the official name used in Intel's documents. Signed-off-by: Li Hong <lihong.hi@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <20091014105039.GA22670@uhli> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-14[S390] Add highgprs facility to /proc/cpuinfoAndreas Krebbel
This patch makes the hwcap bit for the high gprs feature to be visible in /proc/cpuinfo. Signed-off-by: Andreas Krebbel <Andreas.Krebbel@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-10-14[S390] hypfs: Use subcode 6 if subcode 7 is not availableMichael Holzheu
Hypfs never worked on systems that only provide D204 subcode 6. In these cases we nevertheless used subcode 7. With this fix, we use subcode 6, if it is available and the system does not provide subcode 7. Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-10-14sh: Fix a TRACE_IRQS_OFF typo.Paul Mundt
The resume_userspace path had TRACE_IRQS_OFF written incorrectly and so never handled the transition properly. This was fixed once before but seems to have made it back in the tree. Fix it for good. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-10-14sh: Optimize the setup_rt_frame() I-cache flush.Paul Mundt
This only needs to flush the return code via the legacy path, and just invalidates uselessly otherwise. This makes the behaviour consistent for all of the trampoline setup paths. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-10-14sh: Populate initial secondary CPU info from boot_cpu_data.Paul Mundt
The secondary CPU info was seeing corrupted results due to not entering all of the setup paths taken by the boot CPU. So we just memcpy() the boot cpu data over directly, and then fix up the per-CPU bits. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-10-14sh: Tidy up SMP cpuinfo.Paul Mundt
Trivial change for cleaning up the cpuinfo pretty printing on SMP, adds a newline between CPUs. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-10-14sh: Use boot_cpu_data for FPU tests in sigcontext paths.Paul Mundt
We do not want to use smp_processor_id() from these paths, as they trip preempt BUGs. Switch the test over to the boot cpu directly. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-10-14powerpc/pci: Fix MODPOST warningHeiko Schocher
making a powerpc target with PCI support, shows the following warning: MODPOST vmlinux.o WARNING: vmlinux.o(.text+0x10430): Section mismatch in reference from the function pcibios_allocate_bus_resources() to the function .init.text:reparent_resources() The function pcibios_allocate_bus_resources() references the function __init reparent_resources(). This is often because pcibios_allocate_bus_resources lacks a __init annotation or the annotation of reparent_resources is wrong. This patch fix this warning by removing the __init annotation before reparent_resources. Signed-off-by: Heiko Schocher <hs@denx.de> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-10-14powerpc/oprofile: Add ppc750 CL as supported by oprofileDragos Tatulea
Here's a patch that adds the ppc750 CL cpu as supported by oprofile. Signed-off-by: Dragos Tatulea <dtatulea@ixiacom.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-10-14powerpc: warning: allocated section `.data_nosave' not in segmentSean MacLennan
We need to align before the output section. Having the align inside the output section causes the linker to put some filler in there, which makes it a non-empty section, but this section isn't assigned to a segment so you get a warning from the linker. Signed-off-by: Sean MacLennan <smaclennan@pikatech.com> Acked-by: Segher Boessenkool <segher@kernel.crashing.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-10-14powerpc/kgdb: Fix build failure caused by "kgdb.c: unused variable 'acc'"Anton Vorontsov
'acc' isn't used anywhere and thus triggers gcc warning, which causes build error with CONFIG_PPC_DISABLE_WERROR=n (default): cc1: warnings being treated as errors arch/powerpc/kernel/kgdb.c: In function 'gdb_regs_to_pt_regs': arch/powerpc/kernel/kgdb.c:289: warning: unused variable 'acc' make[1]: *** [arch/powerpc/kernel/kgdb.o] Error 1 Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-10-14powerpc: Fix hypervisor TLB batchingAnton Blanchard
Profiling of a page fault scalability microbenchmark shows flush_hash_range is not calling the batch hpte invalidate hcall (H_BULK_REMOVE). It turns out we have a duplicate firmware feature for hcall-bulk and the current setup code stops after finding the first match. This meant we never batch and always do individual invalidates. The patch below removes the duplicate and shifts FW_FEATURE_CMO to close the gap. With the patch applied the single threaded page fault rate improves from 217169 to 238755 per second on a POWER5 test box, a 10% improvement. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-10-14powerpc/mm: Fix hang accessing top of vmalloc spaceBenjamin Herrenschmidt
On pSeries, we always force the IO space to be mapped using 4K pages even with a 64K base page size to cope with some limitations in the HV interface to some devices. However, the SLB miss handler code to discriminate between vmalloc and ioremap space uses a CPU feature section such that the code is nop'ed out when the processor support large pages non-cachable mappings. Thus, we end up always using the ioremap page size for vmalloc segments on such processors, causing a discrepency between the segment and the hash table, and thus a hang continously hashing the page. It works for the first segment of the vmalloc space since that segment is "bolted" in by C code correctly, and thankfully we almost never use the vmalloc space beyond the first segment, but the new percpu code made the bug happen. This fixes it by removing the feature section from the assembly, we now always do the comparison between vmalloc and ioremap. Signed-off-by; Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-10-14powerpc: Fix memory leak in axon_msi.cMichael Ellerman
cppcheck found a memory leak in axon_msi, if dcr_base or dcr_len are zero, we have already allocated msic, so we should free it in the error path. Signed-off-by: Eric Sesterhenn <eric.sesterhenn@lsexperts.de> Acked-by: Michael Ellerman <michael@ellerman.id.au> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-10-14powerpc/pmac: Fix issues with sleep on some powerbooksBenjamin Herrenschmidt
Since the change of how interrupts are disabled during suspend, certain PowerBook models started exhibiting various issues during suspend or resume from sleep. I finally tracked it down to the code that runs various "platform" functions (kind of little scripts extracted from the device-tree), which uses our i2c and PMU drivers expecting interrutps to work, and at a time where with the new scheme, they have been disabled. This causes timeouts internally which for some reason results in the PMU being unable to see the trackpad, among other issues, really it depends on the machine. Most of the time, we fail to properly adjust some clocks for suspend/resume so the results are not always predictable. This patch fixes it by using IRQF_TIMER for both the PMU and the I2C interrupts. I prefer doing it this way than moving the call sites since I really want those platform functions to still be called after all drivers (and before sysdevs). We also do a slight cleanup to via-pmu.c driver to make sure the ADB autopoll mask is handled correctly when doing bus resets Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-10-13powerpc64/ftrace: use PACA to retrieve TOC in mod_return_to_handlerSteven Rostedt
The mod_return_to_handler needs to switch to the kernel TOC before jumping to a the kernel code. It currently does this by looking at the kernel function data and retrieves the TOC that way. Not only is this inefficient, it also breaks with a relocatable kernel. The PACA contains the kernel TOC and we can easily retrieve it that way. Reported-by: Sachin Sant <sachinp@in.ibm.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2009-10-13powerpc/ftrace: show real return addresses in modulesSteven Rostedt
When the function graph tracer is enabled, it replaces the return address with a hook back to the tracer. This makes back traces see the hook instead of the actual return address. The current code also shows the real address by checking if the return address jumps to the return_to_handler. If it is, is also prints out the saved real return address. On powerpc64, some modules may return to mod_return_to_handler, which is not checked. This patch will also show the real address if a return is to mod_return_to_handler as well. Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2009-10-13Merge git://git.infradead.org/~dwmw2/iommu-2.6.32Linus Torvalds
* git://git.infradead.org/~dwmw2/iommu-2.6.32: x86: Move pci_iommu_init to rootfs_initcall() Run pci_apply_final_quirks() sooner. Mark pci_apply_final_quirks() __init rather than __devinit Rename pci_init() to pci_apply_final_quirks(), move it to quirks.c intel-iommu: Yet another BIOS workaround: Isoch DMAR unit with no TLB space intel-iommu: Decode (and ignore) RHSA entries intel-iommu: Make "Unknown DMAR structure" message more informative
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