- 22 11月, 2016 1 次提交
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由 Russell Currey 提交于
Whenever a PE is initialised in powernv, opal_pci_eeh_freeze_clear() is called. This is to remove any existing freeze, and has no negative side effects if the PE is already in an unfrozen state. On PHB backends that don't support this operation and return OPAL_UNSUPPORTED, this creates a scary and misleading warning message. Skip the warning message on init if OPAL_UNSUPPORTED is returned. As far as I'm aware, this currently only affects NPUs. Fixes: 313483dd ("powerpc/powernv: Unfreeze PE on allocation") Signed-off-by: NRussell Currey <ruscur@russell.cc> Acked-by: NGavin Shan <gwshan@linux.vnet.ibm.com> Reviewed-by: NAndrew Donnellan <andrew.donnellan@au1.ibm.com> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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- 18 11月, 2016 18 次提交
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由 Michael Ellerman 提交于
The ibm_pa_features array consists of structures that describe which bit and byte in the ibm,pa-features property toggles one or more flags in either the CPU, MMU, or user visible feature flags. Each one consists of 7 values, which are all unsigned long, int or char, meaning the compiler gives us no warning if we assign the wrong values to the wrong elements. In fact we have had a bug here in the past, where we were setting incorrect bits, see commit 6997e57d ("powerpc: scan_features() updates incorrect bits for REAL_LE"). So switch to using named initialisers for the structure elements, to reduce the likelihood of future bugs, and hopefully improve readability also. Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au> Reviewed-by: NBalbir Singh <bsingharora@gmail.com>
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由 Michael Ellerman 提交于
These are the PPC optimised versions of various crypto algorithms, so we should turn them on by default to get test coverage. Suggested-by: NNicholas Piggin <npiggin@gmail.com> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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由 Michael Ellerman 提交于
The IBMEBUS code supports the GX bus found on Power7 and earlier CPUs. On Power8 it has been replaced, and so we have no need for it. We don't actually have a config symbol for Power8 vs Power7 etc., but we only support booting little endian on Power8 or later, so use that as a reasonable approximation. Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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由 Michael Ellerman 提交于
ibmebus.c is pseries only code, so move it in there. Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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由 Michael Ellerman 提交于
vio.c is pseries only code, so move it in there. Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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由 Frederic Barrat 提交于
If a process dumps core while owning a cxl file descriptor obtained from an AFU driver (e.g. cxlflash) through the cxl_get_fd() API, the following error occurs: [ 868.027591] Unable to handle kernel paging request for data at address ... [ 868.027778] Faulting instruction address: 0xc00000000035edb0 cpu 0x8c: Vector: 300 (Data Access) at [c000003c688275e0] pc: c00000000035edb0: elf_core_dump+0xd60/0x1300 lr: c00000000035ed80: elf_core_dump+0xd30/0x1300 sp: c000003c68827860 msr: 9000000100009033 dar: c dsisr: 40000000 current = 0xc000003c68780000 paca = 0xc000000001b73200 softe: 0 irq_happened: 0x01 pid = 46725, comm = hxesurelock enter ? for help [c000003c68827a60] c00000000036948c do_coredump+0xcec/0x11e0 [c000003c68827c20] c0000000000ce9e0 get_signal+0x540/0x7b0 [c000003c68827d10] c000000000017354 do_signal+0x54/0x2b0 [c000003c68827e00] c00000000001777c do_notify_resume+0xbc/0xd0 [c000003c68827e30] c000000000009838 ret_from_except_lite+0x64/0x68 --- Exception: 300 (Data Access) at 00003fff98ad2918 The root cause is that the address_space structure for the file doesn't define a 'host' member. When cxl allocates a file descriptor, it's using the anonymous inode to back the file, but allocates a private address_space for each context. The private address_space allows to track memory allocation for each context. cxl doesn't define the 'host' member of the address space, i.e. the inode. We don't want to define it as the anonymous inode, since there's no longer a 1-to-1 relation between address_space and inode. To fix it, instead of using the anonymous inode, we introduce a simple pseudo filesystem so that cxl can allocate its own inodes. So we now have one inode for each file and address_space. The pseudo filesystem is only mounted on the first allocation of a file descriptor by cxl_get_fd(). Tested with cxlflash. Signed-off-by: NFrederic Barrat <fbarrat@linux.vnet.ibm.com> Reviewed-by: NMatthew R. Ochs <mrochs@linux.vnet.ibm.com> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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由 Vaibhav Jain 提交于
If an afu interrupt is in flight when an eeh error is triggered the control still reaches the function native_irq_multiplexed and the PE-Handle read from the CXL_PSL_PEHandle_An register is 0xffff. The function then erroneously assumes that the interrupt belonged to a detached context and generates a warning with full stack dump in the kernel log complaining: "Unable to demultiplex CXL PSL IRQ for PE 65535 DSISR ffffffff DAR ffffffff. (Possible AFU HW issue - was a term/remove acked with outstanding transactions" To fix this the patch adds new code to the function native_irq_multiplexed function to compares the read value of register CXL_PSL_PEHandle_An to ~0ULL. If true then logs a warning message saying that the interrupt is being ignored and returns IRQ_HANDLED from the irq handler. Reviewed-by: NAndrew Donnellan <andrew.donnellan@au1.ibm.com> Acked-by: NFrederic Barrat <fbarrat@linux.vnet.ibm.com> Acked-by: NIan Munsie <imunsie@au1.ibm.com> Signed-off-by: NVaibhav Jain <vaibhav@linux.vnet.ibm.com> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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由 Christophe Jaillet 提交于
'cxl_dev_context_init()' returns an error pointer in case of error, not NULL. So test it with IS_ERR. Signed-off-by: NChristophe JAILLET <christophe.jaillet@wanadoo.fr> Reviewed-by: NAndrew Donnellan <andrew.donnellan@au1.ibm.com> Acked-by: NFrederic Barrat <fbarrat@linux.vnet.ibm.com> Acked-by: NIan Munsie <imunsie@au1.ibm.com> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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由 Christophe Jaillet 提交于
'cxl_dev_context_init()' returns an error pointer in case of error, not NULL. So test it with IS_ERR. Signed-off-by: NChristophe JAILLET <christophe.jaillet@wanadoo.fr> Reviewed-by: NAndrew Donnellan <andrew.donnellan@au1.ibm.com> Acked-by: NFrederic Barrat <fbarrat@linux.vnet.ibm.com> Acked-by: NIan Munsie <imunsie@au1.ibm.com> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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由 Christophe Jaillet 提交于
'cxl_context_alloc()' does not return an error pointer. It is just a shortcut for a call to 'kzalloc' with 'sizeof(struct cxl_context)' as the size parameter. So its return value should be compared with NULL. While fixing it, simplify a bit the code. Signed-off-by: NChristophe JAILLET <christophe.jaillet@wanadoo.fr> Reviewed-by: NAndrew Donnellan <andrew.donnellan@au1.ibm.com> Acked-by: NFrederic Barrat <fbarrat@linux.vnet.ibm.com> Acked-by: NIan Munsie <imunsie@au1.ibm.com> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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由 Nicholas Piggin 提交于
When ending an oops, don't clear die_owner unless the nest count went to zero. This prevents a second nested oops from hanging forever on the die_lock. Signed-off-by: NNicholas Piggin <npiggin@gmail.com> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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由 Nicholas Piggin 提交于
When exiting xmon with 'x' (exit and recover), oops_begin bails out immediately, but die then calls __die() and oops_end(), which cause a lot of bad things to happen. If the debugger was attached then went to graceful recovery, exit from die() immediately. Signed-off-by: NNicholas Piggin <npiggin@gmail.com> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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由 Nicholas Piggin 提交于
Add an option to use thin archives to build the kernel. Thin archives are explained in commit a5967db9 ("kbuild: allow architectures to use thin archives instead of ld -r"). This is a gradual way to introduce the option to testers. Some change to the way we invoke ar is required so it can be used by scripts/link-vmlinux.sh. Signed-off-by: NStephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: NNicholas Piggin <npiggin@gmail.com> [mpe: Make it an explicit option not dependant on COMPILE_TEST] Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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由 Michael Ellerman 提交于
Under some configs we need to explicitly include cpu_has_feature.h, otherwise we fail with: arch/powerpc/lib/sstep.c:1992:7: error: implicit declaration of function 'cpu_has_feature' Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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由 Nathan Fontenot 提交于
The pasrsing of data written to the dlpar file in sysfs does not correctly account for the possibility of reading past the end of the buffer. The code assumes that all pieces of the command witten to the sysfs file are present in the form "<resource> <action> <id_type> <id>". Correct this by updating the buffer parsing code to make a local copy and use the strsep() and sysfs_streq() routines to parse the buffer. This patch also separates the parsing code into subroutines for each piece of the command. Signed-off-by: NNathan Fontenot <nfont@linux.vnet.ibm.com> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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由 Tobias Klauser 提交于
Remove the unused but set variable srr1 in save_mce_event() to fix the following GCC warning when building with 'W=1': arch/powerpc/kernel/mce.c:75:11: warning: variable 'srr1' set but not used It has never been used. Signed-off-by: NTobias Klauser <tklauser@distanz.ch> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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由 Tobias Klauser 提交于
Fix two [-Wold-style-declaration] GCC warnings by moving the inline keyword before the return type. Signed-off-by: NTobias Klauser <tklauser@distanz.ch> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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由 Christophe Leroy 提交于
MIN_HUGEPTE_SHIFT hasn't been used since commit d1837cba ("powerpc/mm: Cleanup initialization of hugepages on powerpc") Signed-off-by: NChristophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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- 17 11月, 2016 17 次提交
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由 Suraj Jitindar Singh 提交于
Version 3.00 of the ISA states that the PATS (partition table size) field of the PTCR (partition table control register) and the PRTS (process table size) field of the partition table entry must both be less than or equal to 24. However the actual size of the partition and process tables is equal to 2 to the power of 12 plus the PATS and PRTS fields, respectively. This means that the max allowable size of each of these tables is 2^36 or 64GB for both. Thus when checking the size shift for each we should be checking for values of greater than 36 instead of the current check for shifts larger than 24 and 23. Fixes: 2bfd65e4Signed-off-by: NSuraj Jitindar Singh <sjitindarsingh@gmail.com> Reviewed-by: NBalbir Singh <bsingharora@gmail.com> Reviewed-by: NAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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由 Anshuman Khandual 提交于
This patch adds ptrace interface test for TM SPR registers. This also adds ptrace interface based helper functions related to TM SPR registers access. Signed-off-by: NAnshuman Khandual <khandual@linux.vnet.ibm.com> Signed-off-by: NSimon Guo <wei.guo.simon@gmail.com> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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由 Anshuman Khandual 提交于
This patch adds ptrace interface test for VSX, VMX registers inside suspended TM context. Signed-off-by: NAnshuman Khandual <khandual@linux.vnet.ibm.com> Signed-off-by: NSimon Guo <wei.guo.simon@gmail.com> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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由 Anshuman Khandual 提交于
This patch adds ptrace interface test for VSX, VMX registers inside TM context. This also adds ptrace interface based helper functions related to chckpointed VSX, VMX registers access. Signed-off-by: NAnshuman Khandual <khandual@linux.vnet.ibm.com> Signed-off-by: NSimon Guo <wei.guo.simon@gmail.com> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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由 Anshuman Khandual 提交于
This patch adds ptrace interface test for VSX, VMX registers. This also adds ptrace interface based helper functions related to VSX, VMX registers access. This also adds some assembly helper functions related to VSX and VMX registers. Signed-off-by: NAnshuman Khandual <khandual@linux.vnet.ibm.com> Signed-off-by: NSimon Guo <wei.guo.simon@gmail.com> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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由 Anshuman Khandual 提交于
This patch adds ptrace interface test for TAR, PPR, DSCR registers inside suspended TM context. Signed-off-by: NAnshuman Khandual <khandual@linux.vnet.ibm.com> Signed-off-by: NSimon Guo <wei.guo.simon@gmail.com> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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由 Anshuman Khandual 提交于
This patch adds ptrace interface test for TAR, PPR, DSCR registers inside TM context. This also adds ptrace interface based helper functions related to checkpointed TAR, PPR, DSCR register access. Signed-off-by: NAnshuman Khandual <khandual@linux.vnet.ibm.com> Signed-off-by: NSimon Guo <wei.guo.simon@gmail.com> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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由 Anshuman Khandual 提交于
This patch adds ptrace interface test for TAR, PPR, DSCR registers. This also adds ptrace interface based helper functions related to TAR, PPR, DSCR register access. Signed-off-by: NAnshuman Khandual <khandual@linux.vnet.ibm.com> Signed-off-by: NSimon Guo <wei.guo.simon@gmail.com> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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由 Anshuman Khandual 提交于
This patch adds ptrace interface test for GPR/FPR registers inside suspended TM context. Signed-off-by: NAnshuman Khandual <khandual@linux.vnet.ibm.com> Signed-off-by: NSimon Guo <wei.guo.simon@gmail.com> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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由 Anshuman Khandual 提交于
This patch adds ptrace interface test for GPR/FPR registers inside TM context. This adds ptrace interface based helper functions related to checkpointed GPR/FPR access. Signed-off-by: NAnshuman Khandual <khandual@linux.vnet.ibm.com> Signed-off-by: NSimon Guo <wei.guo.simon@gmail.com> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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由 Anshuman Khandual 提交于
This patch adds ptrace interface test for GPR/FPR registers. This adds ptrace interface based helper functions related to GPR/FPR access and some assembly helper functions related to GPR/FPR registers. Signed-off-by: NAnshuman Khandual <khandual@linux.vnet.ibm.com> Signed-off-by: NSimon Guo <wei.guo.simon@gmail.com> [mpe: Add #defines for the new note types when headers don't define them] Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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由 Simon Guo 提交于
There are some functions, especially register related, which can be shared across multiple selftests/powerpc test directories. This patch creates a new include directory to store those shared files, so that the file layout becomes more neat. Signed-off-by: NSimon Guo <wei.guo.simon@gmail.com> [mpe: Reworked to move the headers only] Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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由 Anshuman Khandual 提交于
This patch adds SPR number for TAR, PPR, DSCR special purpose registers. It also adds TM, VSX, VMX related instructions which will then be used by patches later in the series. Now that the new DSCR register definitions (SPRN_DSCR_PRIV and SPRN_DSCR) are defined outside this directory, use them instead. Signed-off-by: NAnshuman Khandual <khandual@linux.vnet.ibm.com> Signed-off-by: NSimon Guo <wei.guo.simon@gmail.com> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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由 Rashmica Gupta 提交于
Useful to be able to dump the kernel hash page table to check which pages are hashed along with their sizes and other details. Add a debugfs file to check the hash page table. If radix is enabled (and so there is no hash page table) then this file doesn't exist. To use this the PPC_PTDUMP config option must be selected. Signed-off-by: NRashmica Gupta <rashmicy@gmail.com> [mpe: Fix build with SPARSEMEM_VMEMMAP=n & PSERIES=n] Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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由 Rashmica Gupta 提交于
Useful to be able to dump the kernels page tables to check permissions and memory types - derived from arm64's implementation. Add a debugfs file to check the page tables. To use this the PPC_PTDUMP config option must be selected. Signed-off-by: NRashmica Gupta <rashmicy@gmail.com> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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由 Michael Ellerman 提交于
Currently there's some CMO (Cooperative Memory Overcommit) code, in plpar_wrappers.h. Some of it is #ifdef CONFIG_PSERIES and some of it isn't. The end result being if a file includes plpar_wrappers.h it won't build with CONFIG_PSERIES=n. Fix it by moving the CMO code into platforms/pseries. The two hcall wrappers can just be moved into their only caller, cmm.c, and the accessors can go in pseries.h. Note we need the accessors because cmm.c can be built as a module, so there needs to be a split between the built-in code vs the module, and that's achieved by using those accessors. Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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由 Balbir Singh 提交于
Rename "sift" to "shift". Signed-off-by: NBalbir Singh <bsingharora@gmail.com> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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- 14 11月, 2016 4 次提交
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IDE subsystem has been deprecated since 2009 and the majority (if not all) of Linux distributions have switched to use libata for ATA support exclusively. However there are still some users (mostly old or/and embedded non-x86 systems) that have not converted from using IDE subsystem to libata PATA drivers. This doesn't seem to be good thing in the long-term for Linux as while there is less and less PATA systems left in use: * testing efforts are divided between two subsystems * having duplicate drivers for same hardware confuses users This patch converts storcenter_defconfig to use libata PATA drivers. Signed-off-by: NBartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
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IDE subsystem has been deprecated since 2009 and the majority (if not all) of Linux distributions have switched to use libata for ATA support exclusively. However there are still some users (mostly old or/and embedded non-x86 systems) that have not converted from using IDE subsystem to libata PATA drivers. This doesn't seem to be good thing in the long-term for Linux as while there is less and less PATA systems left in use: * testing efforts are divided between two subsystems * having duplicate drivers for same hardware confuses users This patch converts pseries_defconfig to use libata PATA drivers. Signed-off-by: NBartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
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IDE subsystem has been deprecated since 2009 and the majority (if not all) of Linux distributions have switched to use libata for ATA support exclusively. However there are still some users (mostly old or/and embedded non-x86 systems) that have not converted from using IDE subsystem to libata PATA drivers. This doesn't seem to be good thing in the long-term for Linux as while there is less and less PATA systems left in use: * testing efforts are divided between two subsystems * having duplicate drivers for same hardware confuses users This patch converts ppc6xx_defconfig to use libata PATA drivers. Signed-off-by: NBartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
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IDE subsystem has been deprecated since 2009 and the majority (if not all) of Linux distributions have switched to use libata for ATA support exclusively. However there are still some users (mostly old or/and embedded non-x86 systems) that have not converted from using IDE subsystem to libata PATA drivers. This doesn't seem to be good thing in the long-term for Linux as while there is less and less PATA systems left in use: * testing efforts are divided between two subsystems * having duplicate drivers for same hardware confuses users This patch converts ppc64e_defconfig to use libata PATA drivers. Signed-off-by: NBartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
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