- 20 12月, 2013 1 次提交
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Signed-off-by: NJean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> [nicolas.ferre@atmel.com: typo, nodes in address ascending order, shrink cmdline] Signed-off-by: NNicolas Ferre <nicolas.ferre@atmel.com>
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- 02 12月, 2013 13 次提交
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由 Boris BREZILLON 提交于
This patch removes the old main clk node which is now useless as sama5d3 SoCs and boards are no longer compatible with the old at91 clk implementations. It also remove old clock definitions (clock definitions using at91 old clk framework). Signed-off-by: NBoris BREZILLON <b.brezillon@overkiz.com> Signed-off-by: NNicolas Ferre <nicolas.ferre@atmel.com>
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由 Boris BREZILLON 提交于
This patch removes the selection of AT91_USE_OLD_CLK when selecting sama5d3 SoC support. This will enable automatically enable COMMON_CLK_AT91 option and add support for at91 common clk implementation. Signed-off-by: NBoris BREZILLON <b.brezillon@overkiz.com> Signed-off-by: NNicolas Ferre <nicolas.ferre@atmel.com>
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由 Boris BREZILLON 提交于
Define the main clock frequency for the new main clock node in sama5d3xcm.dtsi. Signed-off-by: NBoris BREZILLON <b.brezillon@overkiz.com> Signed-off-by: NNicolas Ferre <nicolas.ferre@atmel.com>
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由 Boris BREZILLON 提交于
Define sama5d3 clocks in sama5d3 device tree. Add references to the appropriate clocks in each peripheral. Signed-off-by: NBoris BREZILLON <b.brezillon@overkiz.com> Signed-off-by: NNicolas Ferre <nicolas.ferre@atmel.com>
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由 Boris BREZILLON 提交于
This patch encloses sama5d3 old clk registration in "#if defined(CONFIG_OLD_CLK_AT91) #endif" sections. Signed-off-by: NBoris BREZILLON <b.brezillon@overkiz.com> Signed-off-by: NNicolas Ferre <nicolas.ferre@atmel.com>
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由 Boris BREZILLON 提交于
This patch prepare the transition to common clk for sama5 dt boards by replacing the timer init callback. Clocks registration cannot be done in early init callback (as formerly done by the old clk implementation) because it requires dynamic allocation which is not ready yet during early init. In the other hand, at91 clocks must be registered before at91sam926x_pit_init is called because PIT (Periodic Interval Timer) driver request the master clk (mck). A new function (at91sama5_dt_timer_init) is created to fullfil these needs. This function registers all at91 clks using the dt definition before calling the PIT init function. The device tree clock registration is enabled only if common clk is selected. Else the old clk registration is been done during at91_dt_initialize call. Signed-off-by: NBoris BREZILLON <b.brezillon@overkiz.com> Signed-off-by: NNicolas Ferre <nicolas.ferre@atmel.com>
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由 Boris BREZILLON 提交于
This patch adds new compatible string for PMC node to prepare the transition to common clk. These compatible string come from pmc driver in clk subsystem and are needed to provide new device tree compatibility with old at91 clks (device tree using common clks will use the new compatible strings). Signed-off-by: NBoris BREZILLON <b.brezillon@overkiz.com> Acked-by: NMike Turquette <mturquette@linaro.org> Signed-off-by: NNicolas Ferre <nicolas.ferre@atmel.com>
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由 Boris BREZILLON 提交于
Use device tree to get the source clock of the PIT (Periodic Interval Timer). If the clock is not found in device tree (or dt is not enabled) we'll try to get it using clk_lookup definitions. Signed-off-by: NBoris BREZILLON <b.brezillon@overkiz.com> Acked-by: NMike Turquette <mturquette@linaro.org> Signed-off-by: NNicolas Ferre <nicolas.ferre@atmel.com>
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由 Boris BREZILLON 提交于
This patch adds at91 smd (Soft Modem) clock implementation using common clk framework. Not used by any driver right now. Signed-off-by: NBoris BREZILLON <b.brezillon@overkiz.com> Acked-by: NMike Turquette <mturquette@linaro.org> Signed-off-by: NNicolas Ferre <nicolas.ferre@atmel.com>
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由 Boris BREZILLON 提交于
This patch adds new at91 usb clock implementation using common clk framework. This clock is used to clock usb ports (ohci, ehci and udc). Signed-off-by: NBoris BREZILLON <b.brezillon@overkiz.com> Acked-by: NMike Turquette <mturquette@linaro.org> Signed-off-by: NNicolas Ferre <nicolas.ferre@atmel.com>
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由 Boris BREZILLON 提交于
This adds new at91 utmi clock implementation using common clk framework. This clock is a pll with a fixed factor (x40). It is used as a source for usb clock. Signed-off-by: NBoris BREZILLON <b.brezillon@overkiz.com> Acked-by: NMike Turquette <mturquette@linaro.org> Signed-off-by: NNicolas Ferre <nicolas.ferre@atmel.com>
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由 Boris BREZILLON 提交于
This patch adds the following Kconfig options to prepare the transition to common clk framework: - AT91_USE_OLD_CLK: this option is selected by every SoC which does not support new at91 clks based on common clk framework (SoC which does not define the clock tree in its device tree). This options is also selected when the user choose non dt boards support (new at91 clks can only be registered from a device tree definition). - COMMON_CLK_AT91: this option cannot be selected directly. Instead it is enabled if these 3 conditions are met: * at least one of the selected SoCs have a PMC (Power Management Controller) Unit * device tree support is enabled * the old at91 clk implementation is disabled (every selected SoC define its clks in its device tree and non dt boards support is disabled) - OLD_CLK_AT91: this option cannot be selected directly. Instead it is enabled if these 2 conditions are met: * at least one of the selected SoCs have a PMC (Power Management Controller) Unit * at least one of the selected SoCs does not define its clks in its device tree or non dt-boards support is enabled This patch selects AT91_USE_OLD_CLK in all currently supported SoCs. These selects will be removed after clk definitions are properly added in each soc's device tree. It also selects AT91_USE_OLD_CLK in all non-dt boards support. AT91_PMC_UNIT references are replaced by OLD_CLK_AT91, because PMC Unit is enabled for both old and common clk implementations, and old clk implementation should not be compiled if COMMON_CLK is enabled. To avoid future link errors, a new stub is created for at91_dt_clock_init function if OLD_CLK_AT91 is disabled. A new check is added in dt init functions (setup.c) to prepare for SoCs supporting new clk implementation. These SoCs won't setup the register_clocks callback (clk registration is done using of_clk_init). Signed-off-by: NBoris BREZILLON <b.brezillon@overkiz.com> Acked-by: NMike Turquette <mturquette@linaro.org> Signed-off-by: NNicolas Ferre <nicolas.ferre@atmel.com>
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由 Boris BREZILLON 提交于
This patch moves at91_pmc.h header from machine specific directory (arch/arm/mach-at91/include/mach/at91_pmc.h) to clk include directory (include/linux/clk/at91_pmc.h). We need this to avoid reference to machine specific headers in clk drivers. Signed-off-by: NBoris BREZILLON <b.brezillon@overkiz.com> Acked-by: NFelipe Balbi <balbi@ti.com> Acked-by: NMike Turquette <mturquette@linaro.org> Signed-off-by: NNicolas Ferre <nicolas.ferre@atmel.com>
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- 22 11月, 2013 1 次提交
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由 Kirill A. Shutemov 提交于
There are two code paths how page with pmd page table can be freed: pmd_free() and pmd_free_tlb(). I've missed the second one and didn't add page table destructor call there. It leads to leak of page->ptl for pmd page tables, if dynamically allocated page->ptl is in use. The patch adds the missed destructor and modifies documentation accordingly. Signed-off-by: NKirill A. Shutemov <kirill.shutemov@linux.intel.com> Reported-by: NAndrey Vagin <avagin@openvz.org> Tested-by: NAndrey Vagin <avagin@openvz.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 21 11月, 2013 25 次提交
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由 Michael Neuling 提交于
The VSX MSR bit in the user context indicates if the context contains VSX state. Currently we set this when the process has touched VSX at any stage. Unfortunately, if the user has not provided enough space to save the VSX state, we can't save it but we currently still set the MSR VSX bit. This patch changes this to clear the MSR VSX bit when the user doesn't provide enough space. This indicates that there is no valid VSX state in the user context. This is needed to support get/set/make/swapcontext for applications that use VSX but only provide a small context. For example, getcontext in glibc provides a smaller context since the VSX registers don't need to be saved over the glibc function call. But since the program calling getcontext may have used VSX, the kernel currently says the VSX state is valid when it's not. If the returned context is then used in setcontext (ie. a small context without VSX but with MSR VSX set), the kernel will refuse the context. This situation has been reported by the glibc community. Based on patch from Carlos O'Donell. Tested-by: NHaren Myneni <haren@linux.vnet.ibm.com> Signed-off-by: NMichael Neuling <mikey@neuling.org> Cc: stable@vger.kernel.org Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Michael Ellerman 提交于
In commit a489043f "Implement arch_get_random_long() based on H_RANDOM" I broke the SMP=n build. We were getting plpar_wrappers.h via spinlock.h which breaks when SMP=n. Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Michael Ellerman 提交于
Up until now we have only used cpu_to_chip_id() in the topology code, which is only used on SMP builds. However my recent commit a4da0d50 "Implement arch_get_random_long/int() for powernv" added a usage when SMP=n, breaking the build. Move cpu_to_chip_id() into prom.c so it is available for SMP=n builds. We would move the extern to prom.h, but that breaks the include in topology.h. Instead we leave it in smp.h, but move it out of the CONFIG_SMP #ifdef. We also need to include asm/smp.h in rng.c, because the linux version skips asm/smp.h on UP. What a mess. Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Li Zhong 提交于
I encountered following issue: [ 0.283035] ibmvscsi 30000015: couldn't initialize event pool [ 5.688822] ibmvscsi: probe of 30000015 failed with error -1 which prevents the storage from being recognized, and the machine from booting. After some digging, it seems that it is caused by commit 4886c399 as dma_mask pointer in viodev->dev is not set, so in dma_set_mask_and_coherent(), dma_set_coherent_mask() is not called because dma_set_mask(), which is dma_set_mask_pSeriesLP() returned EIO. While before the commit, dma_set_coherent_mask() is always called. I tried to replace dma_set_mask_and_coherent() with dma_coerce_mask_and_coherent(), and the machine could boot again. Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Aneesh Kumar K.V 提交于
arch/powerpc/platforms/wsp/wsp.c: In function ‘wsp_probe_devices’: arch/powerpc/platforms/wsp/wsp.c:76:3: error: implicit declaration of function ‘of_address_to_resource’ [-Werror=implicit-function-declaration] Signed-off-by: NAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Anton Blanchard 提交于
Commit fba2369e (mm: use vm_unmapped_area() on powerpc architecture) has a bug in slice_scan_available() where we compare an unsigned long (high_slices) against a shifted int. As a result, comparisons against the top 32 bits of high_slices (representing the top 32TB) always returns 0 and the top of our mmap region is clamped at 32TB This also breaks mmap randomisation since the randomised address is always up near the top of the address space and it gets clamped down to 32TB. Cc: stable@vger.kernel.org # v3.10+ Signed-off-by: NAnton Blanchard <anton@samba.org> Acked-by: NMichel Lespinasse <walken@google.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Anton Blanchard 提交于
If TM is not active there is no need to print PACATMSCRATCH so we can save ourselves a line. Signed-off-by: NAnton Blanchard <anton@samba.org> Acked-by: NMichael Neuling <mikey@neuling.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Anton Blanchard 提交于
When reading from the dispatch trace log (dtl) userspace interface, I sometimes see duplicate entries. One example: # hexdump -C dtl.out 00000000 07 04 00 0c 00 00 48 44 00 00 00 00 00 00 00 00 00000010 00 0c a0 b4 16 83 6d 68 00 00 00 00 00 00 00 00 00000020 00 00 00 00 10 00 13 50 80 00 00 00 00 00 d0 32 00000030 07 04 00 0c 00 00 48 44 00 00 00 00 00 00 00 00 00000040 00 0c a0 b4 16 83 6d 68 00 00 00 00 00 00 00 00 00000050 00 00 00 00 10 00 13 50 80 00 00 00 00 00 d0 32 The problem is in scan_dispatch_log() where we call dtl_consumer() but bail out before incrementing the index. To fix this I moved dtl_consumer() after the timebase comparison. Signed-off-by: NAnton Blanchard <anton@samba.org> Cc: stable@vger.kernel.org Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Anton Blanchard 提交于
We waste quite a few lines in our oops output: ... MSR: 8000000000009032 <SF,EE,ME,IR,DR,RI> CR: 28044024 XER: 00000000 SOFTE: 0 CFAR: 0000000000009088 DAR: 000000000000001c, DSISR: 40000000 GPR00: c0000000000c74f0 c00000037cc1b010 c000000000d2bb30 0000000000000000 ... We can do a better job here and remove 3 lines: MSR: 8000000000009032 <SF,EE,ME,IR,DR,RI> CR: 28044024 XER: 00000000 CFAR: 0000000000009088 DAR: 0000000000000010, DSISR: 40000000 SOFTE: 1 GPR00: c0000000000e3d10 c00000037cc2fda0 c000000000d2c3a8 0000000000000001 Also move PACATMSCRATCH up, it doesn't really belong in the stack trace section. Signed-off-by: NAnton Blanchard <anton@samba.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Anton Blanchard 提交于
Machine check exceptions set DAR and DSISR, so print them in our oops output. Signed-off-by: NAnton Blanchard <anton@samba.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Heiko Carstens 提交于
__get_user_pages_fast() may be called with interrupts disabled (see e.g. get_futex_key() in kernel/futex.c) and therefore should use local_irq_save() and local_irq_restore() instead of local_irq_disable()/enable(). Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com> CC: <stable@vger.kernel.org> [v3.12] Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Gavin Shan 提交于
This clarifies in the log whether the error is a global PHB error or an individual PE being frozen. Signed-off-by: NGavin Shan <shangw@linux.vnet.ibm.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Gavin Shan 提交于
On PHB3, we will fail to fetch IODA tables without PCI_COMMAND_MASTER on PCI bridges. According to one experiment I had, the MSIx interrupts didn't raise from the adapter without the bit applied to all upstream PCI bridges including root port of the adapter. The patch forces to have that bit enabled accordingly. Signed-off-by: NGavin Shan <shangw@linux.vnet.ibm.com> CC: <stable@vger.kernel.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Will Deacon 提交于
The ARM architected timer driver doesn't compile without GENERIC_CLOCKEVENTS selected, so ensure that we select it when building for a platform that has the timer. Without this patch, mach-virt fails to build without something like mach-vexpress also selected. Acked-by: NMarc Zyngier <marc.zyngier@arm.com> Signed-off-by: NWill Deacon <will.deacon@arm.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Will Deacon 提交于
Uwe reported a build failure when targetting a NOMMU platform with my recent prefetch changes: arch/arm/lib/changebit.S: Assembler messages: arch/arm/lib/changebit.S:15: Error: architectural extension `mp' is not allowed for the current base architecture This is due to use of the .arch_extension mp directive immediately prior to an ALT_SMP(...) instruction. Whilst the ALT_SMP macro will expand to nothing if !CONFIG_SMP, gas will still choke on the directive. This patch fixes the issue by only emitting the sequence (including the directive) if CONFIG_SMP=y. Tested-by: NUwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: NWill Deacon <will.deacon@arm.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Al Viro 提交于
Note that pmds[i] is simply uninitialized at that point... Granted, it's very hard to hit (you need split page locks *and* kmalloc(sizeof(spinlock_t), GFP_KERNEL) failing), but the code is obviously bogus. Introduced by commit 09ef4939 ("x86: add missed pgtable_pmd_page_ctor/dtor calls for preallocated pmds") Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk> Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Ulrich Weigand 提交于
I've finally tracked down why my CR signal-unwind test case still fails on little-endian. The problem turned to be that the kernel installs a signal trampoline in the vDSO, and provides a DWARF CFI record for that trampoline. This CFI describes the save location for CR: rsave (70, 38*RSIZE + (RSIZE - CRSIZE)) which is correct for big-endian, but points to the wrong word on little-endian. This is wrong no matter which ABI. In addition, for the ELFv2 ABI, we should not only provide a CFI record for register 70 (cr2), but for all CR fields separately. Strictly speaking, I guess this would mean providing two separate vDSO images, one for ELFv1 processes and one for ELFv2 processes (or maybe playing some tricks with conditional DWARF expressions). However, having CFI records for the other CR fields in ELFv1 is not actually wrong, they just will be ignored. So it seems the simplest fix would be just to always provide CFI for all the fields. Signed-off-by: NUlrich Weigand <Ulrich.Weigand@de.ibm.com> Signed-off-by: NAnton Blanchard <anton@samba.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Anton Blanchard 提交于
Signed-off-by: NAnton Blanchard <anton@samba.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Anton Blanchard 提交于
With the little endian support merged, we can add the CONFIG_CPU_LITTLE_ENDIAN kernel config option. Signed-off-by: NAnton Blanchard <anton@samba.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Alistair Popple 提交于
The kernel doesn't build correctly using the ELFv2 ABI. This patch ensures that the ELFv1 ABI is used when building a kernel with an ELFv2 enabled compiler. Signed-off-by: NAlistair Popple <alistair@popple.id.au> Signed-off-by: NAnton Blanchard <anton@samba.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Rusty Russell 提交于
For the ELFv2 ABI, the hander is the entry point, not a function descriptor. We also need to set up r12, and fortunately the fast_exception_return exit path restores r12 for us so nothing else is required. Signed-off-by: NRusty Russell <rusty@rustcorp.com.au> Signed-off-by: NAnton Blanchard <anton@samba.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Rusty Russell 提交于
No function descriptor, but we set r12 up and set TIF_RESTOREALL as it normally isn't restored on return from syscall. Signed-off-by: NRusty Russell <rusty@rustcorp.com.au> Signed-off-by: NAnton Blanchard <anton@samba.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Rusty Russell 提交于
We leave it at zero (though it could be 1) for old tasks. Signed-off-by: NRusty Russell <rusty@rustcorp.com.au> Signed-off-by: NAnton Blanchard <anton@samba.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Rusty Russell 提交于
Little endian ppc64 is getting an exciting new ABI. This is reflected by the bottom two bits of e_flags in the ELF header: 0 == legacy binaries (v1 ABI) 1 == binaries using the old ABI (compiled with a new toolchain) 2 == binaries using the new ABI. We store this in a thread flag, because we need to set it in core dumps and for signal delivery. Our chief concern is that it doesn't use function descriptors. Signed-off-by: NRusty Russell <rusty@rustcorp.com.au> Signed-off-by: NAnton Blanchard <anton@samba.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Anton Blanchard 提交于
On little endian builds call H_SET_MODE so exceptions have the correct endianness. We need to reset the endian during kexec so do that in the MMU hashtable clear callback. Signed-off-by: NAnton Blanchard <anton@samba.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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