- 30 12月, 2013 5 次提交
-
-
由 Brian W Hart 提交于
Prevent ioda_eeh_hub_diag() from clobbering itself when called by supplying a per-PHB buffer for P7IOC hub diagnostic data. Take care to inform OPAL of the correct size for the buffer. [Small style change to the use of sizeof -- BenH] Signed-off-by: NBrian W Hart <hartb@linux.vnet.ibm.com> Acked-by: NGavin Shan <shangw@linux.vnet.ibm.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
-
由 Brian W Hart 提交于
PHB diagnostic buffer may be smaller than PAGE_SIZE, especially when PAGE_SIZE > 4KB. Signed-off-by: NBrian W Hart <hartb@linux.vnet.ibm.com> Acked-by: NGavin Shan <shangw@linux.vnet.ibm.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
-
由 Paul E. McKenney 提交于
The powerpc 64-bit __copy_tofrom_user() function uses shifts to handle unaligned invocations. However, these shifts were designed for big-endian systems: On little-endian systems, they must shift in the opposite direction. This commit relies on the C preprocessor to insert the correct shifts into the assembly code. [ This is a rare but nasty LE issue. Most of the time we use the POWER7 optimised __copy_tofrom_user_power7 loop, but when it hits an exception we fall back to the base __copy_tofrom_user loop. - Anton ] Signed-off-by: NPaul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: NAnton Blanchard <anton@samba.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
-
由 Rajesh B Prathipati 提交于
The generic put_unaligned/get_unaligned macros were made endian-safe by calling the appropriate endian dependent macros based on the endian type of the powerpc processor. Signed-off-by: NRajesh B Prathipati <rprathip@linux.vnet.ibm.com> Signed-off-by: NAnton Blanchard <anton@samba.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
-
由 Michael Neuling 提交于
In EXCEPTION_PROLOG_COMMON() we check to see if the stack pointer (r1) is valid when coming from the kernel. If it's not valid, we die but with a nice oops message. Currently we allocate a stack frame (subtract INT_FRAME_SIZE) before we check to see if the stack pointer is negative. Unfortunately, this won't detect a bad stack where r1 is less than INT_FRAME_SIZE. This patch fixes the check to compare the modified r1 with -INT_FRAME_SIZE. With this, bad kernel stack pointers (including NULL pointers) are correctly detected again. Kudos to Paulus for finding this. Signed-off-by: NMichael Neuling <mikey@neuling.org> cc: stable@vger.kernel.org Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
-
- 13 12月, 2013 10 次提交
-
-
由 Benjamin Herrenschmidt 提交于
We are passing pointers to the firmware for reads, we need to properly convert the result as OPAL is always BE. Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
-
由 Anton Blanchard 提交于
opal_xscom_read uses a pointer to return the data so we need to byteswap it on LE builds. Signed-off-by: NAnton Blanchard <anton@samba.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
-
由 Anton Blanchard 提交于
A couple more device tree properties that need byte swapping. Signed-off-by: NAnton Blanchard <anton@samba.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
-
由 Anton Blanchard 提交于
The MSI code is miscalculating quotas in little endian mode. Add required byteswaps to fix this. Before we claimed a quota of 65536, after the patch we see the correct value of 256. Signed-off-by: NAnton Blanchard <anton@samba.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
-
由 Anton Blanchard 提交于
We need to byteswap ibm,pcie-link-speed-stats. Signed-off-by: NAnton Blanchard <anton@samba.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
-
由 Anton Blanchard 提交于
The NVRAM code has a number of endian issues. I noticed a very confused error log count: RTAS: 100663330 -------- RTAS event begin -------- 100663330 == 0x06000022. 0x6 LE error logs and 0x22 BE error logs. The pstore code has similar issues - if we write an oops in one endian and attempt to read it in another we get junk. Make both of these formats big endian, and byteswap as required. Signed-off-by: NAnton Blanchard <anton@samba.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
-
由 Anton Blanchard 提交于
Some obvious issues: cat /proc/ppc64/lparcfg ... partition_id=16777216 ... partition_potential_processors=268435456 Signed-off-by: NAnton Blanchard <anton@samba.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
-
由 Anton Blanchard 提交于
cpu_to_core_id() is missing a byteswap: cat /sys/devices/system/cpu/cpu63/topology/core_id 201326592 Signed-off-by: NAnton Blanchard <anton@samba.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
-
由 Anton Blanchard 提交于
During on LE boot we see: Partition configured for 1073741824 cpus, operating system maximum is 2048. Clearly missing a byteswap here. Signed-off-by: NAnton Blanchard <anton@samba.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
-
由 Ulrich Weigand 提交于
There is a bug in using ptrace to access FPRs via PTRACE_PEEKUSR / PTRACE_POKEUSR. In effect, trying to access any of the FPRs always really accesses FPR0, which does seriously break debugging :-) The problem seems to have been introduced by commit 3ad26e5c (Merge branch 'for-kvm' into next). [ It is indeed a merge conflict between Paul's FPU/VSX state rework and my LE patches - Anton ] 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>
-
- 10 12月, 2013 7 次提交
-
-
由 Mahesh Salgaonkar 提交于
The current logic sets the kdump base to min of 2G or ppc64_rma_size/2. On PowerNV kernel the first memory block 'memory@0' can be very large, equal to the DIMM size with ppc64_rma_size value capped to 1G. Hence on PowerNV, kdump base is set to 512M resulting kdump to fail while allocating paca array. This is because, paca need its memory from RMA region capped at 256M (see allocate_pacas()). This patch lowers the kdump base cap to 128M so that kdump kernel can successfully get memory below 256M for paca allocation. Signed-off-by: NMahesh Salgaonkar <mahesh@linux.vnet.ibm.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
-
I have recently found out that no iommu_groups could be found under /sys/ on a P8. That prevents PCI passthrough from working. During my investigation, I found out there seems to be a missing iommu_register_group for PHB3. The following patch seems to fix the problem. After applying it, I see iommu_groups under /sys/kernel/iommu_groups/, and can also bind vfio-pci to an adapter, which gives me a device at /dev/vfio/. Signed-off-by: NThadeu Lima de Souza Cascardo <cascardo@linux.vnet.ibm.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
-
由 Anatolij Gustschin 提交于
The bestcomm driver has been moved to drivers/dma, so to select this driver by default additionally CONFIG_DMADEVICES has to be enabled. Currently it is not enabled in the config despite existing CONFIG_PPC_BESTCOMM=y in the config files. Fix it. Signed-off-by: NAnatolij Gustschin <agust@denx.de> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
-
由 Olof Johansson 提交于
At least some distros expect it these days; turn it on. Also, random churn from doing a savedefconfig for the first time in a year or so. Signed-off-by: NOlof Johansson <olof@lixom.net> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
-
由 Hong H. Pham 提交于
In pte_alloc_one(), pgtable_page_ctor() is passed an address that has not been converted by page_address() to the newly allocated PTE page. When the PTE is freed, __pte_free_tlb() calls pgtable_page_dtor() with an address to the PTE page that has been converted by page_address(). The mismatch in the PTE's page address causes pgtable_page_dtor() to access invalid memory, so resources for that PTE (such as the page lock) is not properly cleaned up. On PPC32, only SMP kernels are affected. On PPC64, only SMP kernels with 4K page size are affected. This bug was introduced by commit d614bb04 "powerpc: Move the pte free routines from common header". On a preempt-rt kernel, a spinlock is dynamically allocated for each PTE in pgtable_page_ctor(). When the PTE is freed, calling pgtable_page_dtor() with a mismatched page address causes a memory leak, as the pointer to the PTE's spinlock is bogus. On mainline, there isn't any immediately obvious symptoms, but the problem still exists here. Fixes: d614bb04 "powerpc: Move the pte free routes from common header" Cc: Paul Mackerras <paulus@samba.org> Cc: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: linux-stable <stable@vger.kernel.org> # v3.10+ Signed-off-by: NHong H. Pham <hong.pham@windriver.com> Reviewed-by: NAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
-
由 Ilia Mirkin 提交于
Allocate enough memory for the ocm_block structure, not just a pointer to it. Signed-off-by: NIlia Mirkin <imirkin@alum.mit.edu> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
-
由 Michael Ellerman 提交于
A kernel configured with PPC_EARLY_DEBUG_BOOTX=y but PPC_PMAC=n and PPC_MAPLE=n will fail to link: btext.c:(.text+0x2d0fc): undefined reference to `.rmci_off' btext.c:(.text+0x2d214): undefined reference to `.rmci_on' Fix it by making the build of rmci_on/off() depend on PPC_EARLY_DEBUG_BOOTX, which also enable the only code that uses them. Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
-
- 07 12月, 2013 1 次提交
-
-
由 Gerhard Sittig 提交于
the 'soc' node in the common .dtsi for MPC5121 has an '#interrupt-cells' property although this node is not an interrupt controller remove this erroneously placed property because starting with v3.13-rc1 lookup and resolution of 'interrupts' specs for peripherals gets misled, emits 'no irq domain found' WARN() messages and breaks the boot process irq: no irq domain found for /soc@80000000 ! ------------[ cut here ]------------ WARNING: at drivers/of/platform.c:171 Modules linked in: CPU: 0 PID: 1 Comm: swapper Tainted: G W 3.13.0-rc1-00001-g8a66234 #8 task: df823bb0 ti: df834000 task.ti: df834000 NIP: c02b5190 LR: c02b5180 CTR: c01cf4e0 REGS: df835c50 TRAP: 0700 Tainted: G W (3.13.0-rc1-00001-g8a66234) MSR: 00029032 <EE,ME,IR,DR,RI> CR: 229a9d42 XER: 20000000 GPR00: c02b5180 df835d00 df823bb0 00000000 00000000 df835b18 ffffffff 00000308 GPR08: c0479cc0 c0480000 c0479cc0 00000308 00000308 00000000 c00040fc 00000000 GPR16: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 df850880 GPR24: df84d670 00000000 00000001 df8561a0 dffffccc df85089c 00000020 00000001 NIP [c02b5190] of_device_alloc+0xf4/0x1a0 LR [c02b5180] of_device_alloc+0xe4/0x1a0 Call Trace: [df835d00] [c02b5180] of_device_alloc+0xe4/0x1a0 (unreliable) [df835d50] [c02b5278] of_platform_device_create_pdata+0x3c/0xc8 [df835d70] [c02b53fc] of_platform_bus_create+0xf8/0x170 [df835dc0] [c02b5448] of_platform_bus_create+0x144/0x170 [df835e10] [c02b55a8] of_platform_bus_probe+0x98/0xe8 [df835e30] [c0437508] mpc512x_init+0x28/0x1c4 [df835e70] [c0435de8] ppc_init+0x4c/0x60 [df835e80] [c0003b28] do_one_initcall+0x150/0x1a4 [df835ef0] [c0432048] kernel_init_freeable+0x114/0x1c0 [df835f30] [c0004114] kernel_init+0x18/0x124 [df835f40] [c000e910] ret_from_kernel_thread+0x5c/0x64 Instruction dump: 409effd4 57c9103a 57de2834 7c89f050 7f83e378 7c972214 7f45d378 48001f55 7c63d278 7c630034 5463d97e 687a0001 <0f1a0000> 2f990000 387b0010 939b0098 ---[ end trace 2257f10e5a20cbdd ]--- ... irq: no irq domain found for /soc@80000000 ! fsl-diu-fb 80002100.display: could not get DIU IRQ fsl-diu-fb: probe of 80002100.display failed with error -22 irq: no irq domain found for /soc@80000000 ! mpc512x_dma 80014000.dma: Error mapping IRQ! mpc512x_dma: probe of 80014000.dma failed with error -22 ... irq: no irq domain found for /soc@80000000 ! fs_enet: probe of 80002800.ethernet failed with error -22 ... irq: no irq domain found for /soc@80000000 ! mpc5121-rtc 80000a00.rtc: mpc5121_rtc_probe: could not request irq: 0 mpc5121-rtc: probe of 80000a00.rtc failed with error -22 ... Cc: Anatolij Gustschin <agust@denx.de> Cc: linuxppc-dev@lists.ozlabs.org Cc: devicetree@vger.kernel.org Signed-off-by: NGerhard Sittig <gsi@denx.de> Signed-off-by: NAnatolij Gustschin <agust@denx.de>
-
- 25 11月, 2013 5 次提交
-
-
由 Chen Gang 提交于
for tmp_part->header.name: it is "Terminating null required only for names < 12 chars". so need to limit the %.12s for it in printk additional info: %12s limit the width, not for the original string output length if name length is more than 12, it still can be fully displayed. if name length is less than 12, the ' ' will be filled before name. %.12s truly limit the original string output length (precision) Signed-off-by: NChen Gang <gang.chen@asianux.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
-
由 Michael Neuling 提交于
In a recent patch: commit c13f20ac Author: Michael Neuling <mikey@neuling.org> powerpc/signals: Mark VSX not saved with small contexts We fixed an issue but an improved solution was later discussed after the patch was merged. Firstly, this patch doesn't handle the 64bit signals case, which could also hit this issue (but has never been reported). Secondly, the original patch isn't clear what MSR VSX should be set to. The new approach below always clears the MSR VSX bit (to indicate no VSX is in the context) and sets it only in the specific case where VSX is available (ie. when VSX has been used and the signal context passed has space to provide the state). This reverts the original patch and replaces it with the improved solution. It also adds a 64 bit version. Signed-off-by: NMichael Neuling <mikey@neuling.org> Cc: stable@vger.kernel.org Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
-
由 Hari Bathini 提交于
When CONFIG_SPARSEMEM_VMEMMAP option is used in kernel, makedumpfile fails to filter vmcore dump as it fails to do vmemmap translations. So far dump filtering on ppc64 never had to deal with vmemmap addresses seperately as vmemmap regions where mapped in zone normal. But with the inclusion of CONFIG_SPARSEMEM_VMEMMAP config option in kernel, this vmemmap address translation support becomes necessary for dump filtering. For vmemmap adress translation, few kernel symbols are needed by dump filtering tool. This patch adds those symbols to vmcoreinfo, which a dump filtering tool can use for filtering the kernel dump. Tested this changes successfully with makedumpfile tool that supports vmemmap to physical address translation outside zone normal. [ Removed unneeded #ifdef as suggested by Michael Ellerman --BenH ] Signed-off-by: NHari Bathini <hbathini@linux.vnet.ibm.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
-
由 Anton Blanchard 提交于
Stephen reported a failure in an allyesconfig build. CONFIG_CPU_LITTLE_ENDIAN=y gets set but his toolchain is not new enough to support little endian. We really want to default to a big endian build; Ben suggested using a choice which defaults to CPU_BIG_ENDIAN. Signed-off-by: NAnton Blanchard <anton@samba.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
-
由 Michael Neuling 提交于
Currently if I cross build TAGS or cscope from x86 I get this: % make ARCH=powerpc TAGS gcc-4.8.real: error: unrecognized command line option ‘-mbig-endian’ GEN TAGS % I'm not setting CROSS_COMPILE= as logically I shouldn't need to and I haven't needed to in the past when building TAGS or cscope. Also, the above completess correct as the error is not fatal to the build. This was caused by: commit d72b0801 Author: Ian Munsie <imunsie@au1.ibm.com> powerpc: Add ability to build little endian kernels The below fixes this by testing for the -mbig-endian option before adding it. I've not done the same thing in the little endian case as if -mlittle-endian doesn't exist, we probably want to fail quickly as you probably have an old big endian compiler. Signed-off-by: NMichael Neuling <mikey@neuling.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
-
- 23 11月, 2013 4 次提交
-
-
由 Scott Wood 提交于
And in flush_hugetlb_page(), don't check whether vma is NULL after we've already dereferenced it. This was found by Dan using static analysis as described here: https://lists.ozlabs.org/pipermail/linuxppc-dev/2013-November/113161.html We currently get away with this because the callers that currently pass NULL for vma seem to be 32-bit-only (e.g. highmem, and CONFIG_DEBUG_PGALLOC in pgtable_32.c) Hugetlb is currently 64-bit only, so we never saw a NULL vma here. Signed-off-by: NScott Wood <scottwood@freescale.com> Reported-by: NDan Carpenter <dan.carpenter@oracle.com>
-
由 Adam Borowski 提交于
These lines were inoperative for four years, which puts some doubt into their importance, and it's possible the fixed version will regress, but at the very least they should be removed instead. Signed-off-by: NAdam Borowski <kilobyte@angband.pl> Signed-off-by: NScott Wood <scottwood@freescale.com>
-
由 LEROY Christophe 提交于
Commit beb2dc0a breaks the MPC8xx which seems to not support using mfspr SPRN_TBRx instead of mftb/mftbu despite what is written in the reference manual. This patch reverts to the use of mftb/mftbu when CONFIG_8xx is selected. Signed-off-by: NChristophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: NScott Wood <scottwood@freescale.com>
-
由 Tiejun Chen 提交于
If CONFIG_ALTIVEC is enabled for CoreNet64, and if we also select CONFIG_E{5,6}500_CPU this may introduce -mcpu=e500mc64 into $CFLAGS. But Altivec option not allowed with e500mc64, then some compiling errors occur like this: CC arch/powerpc/lib/xor_vmx.o arch/powerpc/lib/xor_vmx.c:1:0: error: AltiVec not supported in this target make[1]: *** [arch/powerpc/lib/xor_vmx.o] Error 1 make: *** [arch/powerpc/lib] Error 2 So we should restrict e500mc64 in altivec scenario. Signed-off-by: NTiejun Chen <tiejun.chen@windriver.com> Signed-off-by: NScott Wood <scottwood@freescale.com>
-
- 22 11月, 2013 1 次提交
-
-
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>
-
- 21 11月, 2013 7 次提交
-
-
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>
-
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>
-
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>
-
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>
-
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>
-
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>
-
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>
-