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2013-11-21powerpc: ELF2 binaries signal handlingRusty Russell1-9/+16
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: Rusty Russell <[email protected]> Signed-off-by: Anton Blanchard <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2013-11-21powerpc: ELF2 binaries launched directly.Rusty Russell1-15/+35
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: Rusty Russell <[email protected]> Signed-off-by: Anton Blanchard <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2013-11-21powerpc: Set eflags correctly for ELF ABIv2 core dumps.Rusty Russell1-0/+2
We leave it at zero (though it could be 1) for old tasks. Signed-off-by: Rusty Russell <[email protected]> Signed-off-by: Anton Blanchard <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2013-11-21powerpc: Add TIF_ELF2ABI flag.Rusty Russell2-0/+11
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: Rusty Russell <[email protected]> Signed-off-by: Anton Blanchard <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2013-11-21pseries: Add H_SET_MODE to change exception endiannessAnton Blanchard4-0/+87
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: Anton Blanchard <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2013-11-21powerpc/pseries: Fix endian issues in pseries EEH codeAnton Blanchard1-9/+12
Signed-off-by: Anton Blanchard <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2013-11-06powerpc: Fix fatal SLB miss when restoring PPRBenjamin Herrenschmidt2-8/+9
When restoring the PPR value, we incorrectly access the thread structure at a time where MSR:RI is clear, which means we cannot recover from nested faults. However the thread structure isn't covered by the "bolted" SLB entries and thus accessing can fault. This fixes it by splitting the code so that the PPR value is loaded into a GPR before MSR:RI is cleared. Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2013-11-06powerpc/powernv: Reserve the correct PE numberGavin Shan3-16/+17
We're assigning PE numbers after the completion of PCI probe. During the PCI probe, we had PE#0 as the super container to encompass all PCI devices. However, that's inappropriate since PELTM has ascending order of priority on search on P7IOC. So we need PE#127 takes the role that PE#0 has previously. For PHB3, we still have PE#0 as the reserved PE. The patch supposes that the underly firmware has built the RID to PE# mapping after resetting IODA tables: all PELTM entries except last one has invalid mapping on P7IOC, but all RTEs have binding to PE#0. The reserved PE# is being exported by firmware by device tree. Signed-off-by: Gavin Shan <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2013-11-06powerpc/powernv: Add PE to its own PELTVGavin Shan1-1/+11
We need add PE to its own PELTV. Otherwise, the errors originated from the PE might contribute to other PEs. In the result, we can't clear up the error successfully even we're checking and clearing errors during access to PCI config space. Cc: [email protected] Reported-by: [email protected] Signed-off-by: Gavin Shan <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2013-11-06powerpc/powernv: Add support for indirect XSCOM via debugfsBenjamin Herrenschmidt1-0/+23
Indirect XSCOM addresses normally have the top bit set (of the 64-bit address). This doesn't work via the normal debugfs interface, so we use a different encoding, which we need to convert before calling OPAL. Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2013-11-06powerpc/scom: Improve debugfs interfaceBenjamin Herrenschmidt1-55/+81
The current debugfs interface to scom is essentially unused and racy. It uses two different files "address" and "data" to perform accesses which is at best impractical for anything but manual use by a developer. This replaces it with an "access" file which represent the entire scom address space which can be lseek/read/writen too. This file only supports accesses that are 8 bytes aligned and multiple of 8 bytes in size. The offset is logically the SCOM address multiplied by 8. Since nothing in userspace exploits that file at the moment, the ABI change is a no-brainer. Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2013-11-06powerpc/scom: Enable 64-bit addressesBenjamin Herrenschmidt3-9/+9
On P8, XSCOM addresses has a special "indirect" form that requires more than 32-bits, so let's use u64 everywhere in the code instead of u32. Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2013-11-05powerpc/boot: Properly handle the base "of" boot wrapperBenjamin Herrenschmidt1-0/+4
The wrapper script needs an explicit rule for the "of" boot wrapper (generic wrapper, similar to pseries). Before 0c9fa29149d3726e14262aeb0c8461a948cc9d56 it was hanlded implicitly by the statement: platformo=$object/"$platform".o But now that epapr.o needs to be added, that doesn't work and an explicit rule must be added. Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2013-11-04Merge remote-tracking branch 'agust/next' into nextBenjamin Herrenschmidt4-18/+10
Fixes for build issues when LPB FIFO driver is configured as a module, removal of #ifdefs in mpc512x DIU platform code and a revert of recent changes to mpc52xx PIC driver. Wolfram provided a better fix for PIC driver build issue popping up when older gcc-4.3.5 is used.
2013-10-31powerpc/bpf: Support MOD operationVladimir Murzin2-0/+21
commit b6069a9570 (filter: add MOD operation) added generic support for modulus operation in BPF. This patch brings JIT support for PPC64 Signed-off-by: Vladimir Murzin <[email protected]> Acked-by: Matt Evans <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2013-10-31powerpc/bpf: Fix DIVWU instruction opcodeVladimir Murzin1-1/+1
Currently DIVWU stands for *signed* divw opcode: 7d 2a 4b 96 divwu r9,r10,r9 7d 2a 4b d6 divw r9,r10,r9 Use the *unsigned* divw opcode for DIVWU. Suggested-by: Vassili Karpov <[email protected]> Reviewed-by: Vassili Karpov <[email protected]> Signed-off-by: Vladimir Murzin <[email protected]> Acked-by: Matt Evans <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2013-10-31of: Move definition of of_find_next_cache_node into common code.Sudeep KarkadaNagesha4-34/+33
Since the definition of_find_next_cache_node is architecture independent, the existing definition in powerpc can be moved to driver/of/base.c Cc: Benjamin Herrenschmidt <[email protected]> Cc: Grant Likely <[email protected]> Cc: Rob Herring <[email protected]> Signed-off-by: Sudeep KarkadaNagesha <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2013-10-31powerpc: Remove big endianness assumption in of_find_next_cache_nodeSudeep KarkadaNagesha1-1/+1
Currently big endianness of the device tree data is assumed in of_find_next_cache_node for 'handle' when calling of_find_node_by_phandle. In preparation to move this function to common code, this patch fixes the endianness using 'be32_to_cpup' Cc: Benjamin Herrenschmidt <[email protected]> Cc: Grant Likely <[email protected]> Cc: Rob Herring <[email protected]> Signed-off-by: Sudeep KarkadaNagesha <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2013-10-31powerpc/tm: Remove interrupt disable in __switch_to()Michael Neuling1-5/+2
We currently turn IRQs off in __switch_to(0 but this is unnecessary as it's already disabled in the caller. This removes the IRQ disable but adds a check to make sure it is really off in case this changes in future. Signed-off-by: Michael Neuling <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2013-10-31powerpc: word-at-a-time optimization for 64-bit Little EndianPhilippe Bergheaud1-25/+32
This is an optimization for the PowerPC in 64-bit little-endian. Bit counting is used in find_zero(), instead of the multiply and shift. It is modelled after Alan Modra's PowerPC LE strlen patch http://sourceware.org/ml/libc-alpha/2013-08/msg00097.html. Signed-off-by: Philippe Bergheaud <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2013-10-31powerpc/bpf: BPF JIT compiler for 64-bit Little EndianPhilippe Bergheaud4-16/+21
This enables the Berkeley Packet Filter JIT compiler for the PowerPC running in 64bit Little Endian. Signed-off-by: Philippe Bergheaud <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2013-10-31powerpc: Only save/restore SDR1 if in hypervisor modeDan Streetman1-0/+4
Currently, when not in hypervisor mode the kernel Oopses during suspend or hibernation when accessing the SDR1 register, because it is only available in hypervisor mode. Access to it needs to be protected in BEGIN/END_FW_FTR_SECTION. Signed-off-by: Dan Streetman <[email protected]> Cc: Benjamin Herrenschmidt <[email protected]> Reported-by: Jimmy Pan <[email protected]> Tested-by: Jimmy Pan <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2013-10-31powerpc/pmu: Fix ADB_PMU_LED_IDE dependenciesChristian Kujau1-0/+1
for quite some time the following is printed (twice) after doing "make oldconfig": [...] scripts/kconfig/conf --oldconfig Kconfig warning: (ADB_PMU_LED_IDE) selects LEDS_TRIGGER_IDE_DISK which has unmet direct dependencies (NEW_LEDS && IDE_GD_ATA && LEDS_TRIGGERS) warning: (ADB_PMU_LED_IDE) selects LEDS_TRIGGER_IDE_DISK which has unmet direct dependencies (NEW_LEDS && IDE_GD_ATA && LEDS_TRIGGERS) The following patch causes ADB_PMU_LED to depend on IDE_GD_ATA, so that the options above are only available when IDE_GD_ATA is actually selected and thus eliminates the warning. Signed-off-by: Christian Kujau <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2013-10-31powerpc/nvram: Fix endian issue when using the partition lengthCedric Le Goater1-2/+8
When reading partitions, the length has to be translated from big endian to the endian order of the host. Similarly, when writing partitions, the length needs to be in big endian order. The userspace tool 'nvram' needs a similar fix as it is reading and writing partitions through /dev/nram : http://sourceforge.net/p/powerpc-utils/mailman/message/31571277/ Signed-off-by: Cedric Le Goater <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2013-10-31powerpc/nvram: Fix endian issue when reading the NVRAM sizeCedric Le Goater2-4/+4
Signed-off-by: Cedric Le Goater <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2013-10-31powerpc/nvram: Scan partitions only onceCedric Le Goater1-3/+3
nvram_scan_partitions() is called twice when initializing the "lnx,oops-log" partition and the "ibm,rtas-log" partition. This fills the partition list with duplicate entries. This patch moves the partition scan in the init routine pseries_nvram_init_log_partitions() which is called only once. Signed-off-by: Cedric Le Goater <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2013-10-30powerpc/mpc512x: remove unnecessary #ifBrian Norris2-17/+7
Several functions are only ever referenced locally, so make them static. Of those functions, many of them are protected by an #if. However, the code which can compile fine in either case. Now that (1) the unneeded code is marked 'static' and (2) the code is only used under a C 'if (IS_ENABLED(CONFIG_FB_FSL_DIU))', the compiler can automatically remove the unneeded code, and we don't need the #if or the empty stub functions. Signed-off-by: Brian Norris <[email protected]> Signed-off-by: Anatolij Gustschin <[email protected]>
2013-10-30powerpc/52xx: fix build breakage for MPC5200 LPBFIFO moduleAnatolij Gustschin1-1/+1
The MPC5200 LPBFIFO driver requires the bestcomm module to be enabled, otherwise building will fail. Fix it. Cc: <[email protected]> # 3.10+ Reported-by: Wolfgang Denk <[email protected]> Signed-off-by: Anatolij Gustschin <[email protected]>
2013-10-30Kind of revert "powerpc: 52xx: provide a default in mpc52xx_irqhost_map()"Wolfram Sang1-3/+2
This more or less reverts commit 6391f697d4892a6f233501beea553e13f7745a23. Instead of adding an unneeded 'default', mark the variable to prevent the false positive 'uninitialized var'. The other change (fixing the printout) needs revert, too. We want to know WHICH critical irq failed, not which level it had. Signed-off-by: Wolfram Sang <[email protected]> Cc: Sebastian Andrzej Siewior <[email protected]> Cc: Anatolij Gustschin <[email protected]> Acked-by: Sebastian Andrzej Siewior <[email protected]> Signed-off-by: Anatolij Gustschin <[email protected]>
2013-10-30powerpc/mpc512x: silence build warning upon disabled DIUGerhard Sittig1-0/+3
a disabled Kconfig option results in a reference to a not implemented routine when the IS_ENABLED() macro is used for both conditional implementation of the routine as well as a C language source code test at the call site -- the "if (0) func();" construct only gets eliminated later by the optimizer, while the compiler already has emitted its warning about "func()" being undeclared provide an empty implementation for the mpc512x_setup_diu() and mpc512x_init_diu() routines in case of the disabled option, to avoid the compiler warning which is considered fatal and breaks compilation the bug appeared with commit 2abbbb63c90ab55ca3f054772c2e5ba7df810c48 "powerpc/mpc512x: move common code to shared.c file", how to reproduce: make mpc512x_defconfig echo CONFIG_FB_FSL_DIU=n >> .config && make olddefconfig make CC arch/powerpc/platforms/512x/mpc512x_shared.o .../arch/powerpc/platforms/512x/mpc512x_shared.c: In function 'mpc512x_init_early': .../arch/powerpc/platforms/512x/mpc512x_shared.c:456:3: error: implicit declaration of function 'mpc512x_init_diu' [-Werror=implicit-function-declaration] .../arch/powerpc/platforms/512x/mpc512x_shared.c: In function 'mpc512x_setup_arch': .../arch/powerpc/platforms/512x/mpc512x_shared.c:469:3: error: implicit declaration of function 'mpc512x_setup_diu' [-Werror=implicit-function-declaration] cc1: all warnings being treated as errors make[4]: *** [arch/powerpc/platforms/512x/mpc512x_shared.o] Error 1 Signed-off-by: Gerhard Sittig <[email protected]> CC: <[email protected]> # v3.11 Signed-off-by: Anatolij Gustschin <[email protected]>
2013-10-30powerpc/powernv: Code update interfaceVasant Hegde5-1/+683
Code update interface for powernv platform. This provides sysfs interface to pass new image, validate, update and commit images. This patch includes: - Below OPAL APIs for code update - opal_validate_flash() - opal_manage_flash() - opal_update_flash() - Create below sysfs files under /sys/firmware/opal - image : Interface to pass new FW image - validate_flash : Validate candidate image - manage_flash : Commit/Reject operations - update_flash : Flash new candidate image Updating Image: "update_flash" is an interface to indicate flash new FW. It just passes image SG list to FW. Actual flashing is done during system reboot time. Note: - SG entry format: I have kept version number to keep this list similar to what PAPR is defined. Signed-off-by: Vasant Hegde <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2013-10-30powerpc/powernv: Create opal sysfs directoryVasant Hegde2-0/+22
Create /sys/firmware/opal directory. We wil use this interface to fetch opal error logs, firmware update, etc. Signed-off-by: Vasant Hegde <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2013-10-30powerpc: Add VMX optimised xor for RAID5Anton Blanchard3-0/+247
Add a VMX optimised xor, used primarily for RAID5. On a POWER7 blade this is a decent win: 32regs : 17932.800 MB/sec altivec : 19724.800 MB/sec The bigger gain is when the same test is run in SMT4 mode, as it would if there was a lot of work going on: 8regs : 8377.600 MB/sec altivec : 15801.600 MB/sec I tested this against an array created without the patch, and also verified it worked as expected on a little endian kernel. [ Fix !CONFIG_ALTIVEC build -- BenH ] Signed-off-by: Anton Blanchard <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2013-10-30powerpc/kexec: kexec_sequence() is in misc_64.SGeert Uytterhoeven1-1/+1
Correct reference to the location of the kexec_sequence() assembly helper. There never was a kexec_stub.S in mainline. Signed-off-by: Geert Uytterhoeven <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2013-10-30powerpc: Use 32 bit loads and stores when operating on condition register valuesAnton Blanchard2-6/+6
The condition register (CR) is a 32 bit quantity so we should use 32 bit loads and stores. Signed-off-by: Anton Blanchard <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2013-10-30powerpc: Enable virtio on ppc64 and pseries configsAnton Blanchard2-0/+12
Signed-off-by: Anton Blanchard <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2013-10-30powerpc: Enable multipath modules on ppc64 and pseriesAnton Blanchard2-0/+12
Enable a few modules required to boot on a POWER multipath box. Signed-off-by: Anton Blanchard <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2013-10-30powerpc: sync ppc64, ppc64e and pseries configsAnton Blanchard3-30/+8
Run savedefconfig over the ppc64, ppc64e and pseries config Signed-off-by: Anton Blanchard <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2013-10-30powerpc: Use -mcpu=power7 on ppc64 little endian buildsAnton Blanchard1-4/+5
Using -mcpu=power7 allows gcc to use a number of new instructions including 64 bit byte reversed loads. Signed-off-by: Anton Blanchard <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2013-10-30powerpc/pseries: Fix dedicated processor partition detectionAnton Blanchard1-6/+6
commit f13c13a00512 (powerpc: Stop using non-architected shared_proc field in lppaca) fixed a potential issue with shared/dedicated partition detection. The old method of detection relied on an unarchitected field (shared_proc), and this patch switched to using something architected (a non zero yield_count). Unfortunately the assertion in the Linux header that yield_count is only non zero on shared processor partitions is not true. It turns out dedicated processor partitions can increment yield_count and as such we falsely detect dedicated partitions as shared. Fix the comment, and switch back to using the old method. Signed-off-by: Anton Blanchard <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2013-10-30powerpc: Fix Unaligned LE Floating Point Loads and StoresTom Musta1-12/+40
This patch addresses unaligned single precision floating point loads and stores in the single-step code. The old implementation improperly treated an 8 byte structure as an array of two 4 byte words, which is a classic little endian bug. Signed-off-by: Tom Musta <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2013-10-30powerpc: Fix Unaligned Loads and StoresTom Musta1-0/+45
This patch modifies the unaligned access routines of the sstep.c module so that it properly reverses the bytes of storage operands in the little endian kernel kernel. This is implemented by breaking an unaligned little endian access into a combination of single byte accesses plus an overal byte reversal operation. Signed-off-by: Tom Musta <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2013-10-30powerpc: Enable Little Endian Alignment Handler for Float Pair InstructionsTom Musta1-6/+0
This patch enables alignment handling for the load/store floating point pair instructions (lfdp, lfdpx, stfdp, stfdpx). The handler routine is properly coded and only needs to be enabled. Signed-off-by: Tom Musta <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2013-10-30powerpc: Fix Handler of Unaligned Load/Store StringsTom Musta1-5/+16
The alignment handler is incorrect for unaligned string instructions in little endian mode. These instructions access data as arrays of bytes and thus are endian neutral. However, the routine also handles the load/store multiple instructions, which are NOT endian neutral. This patch toggles the byte swapping flag for the string instructions in little endian builds. This effectively disables the byte swapping logic. Signed-off-by: Tom Musta <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2013-10-30powerpc/pseries: Fix endian issues in pseries iommu codeAnton Blanchard1-29/+30
Signed-off-by: Anton Blanchard <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2013-10-30powerpc: Fix little endian issue in OF PCI scanAnton Blanchard1-2/+2
This issue was causing the QEMU emulated USB device to fail dring PCI probe. Signed-off-by: Anton Blanchard <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2013-10-30powerpc/vio: use strcpy in modalias_showPrarit Bhargava1-2/+2
Commit e82b89a6f19bae73fb064d1b3dd91fcefbb478f4 used strcat instead of strcpy which can result in an overflow of newlines on the buffer. Signed-off-by: Prarit Bhargava Cc: [email protected] Cc: [email protected] Cc: [email protected] Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2013-10-30powerpc: Fix 64K page size support for PPC44xAlistair Popple1-1/+1
PPC44x supports page sizes other than 4K however when 64K page sizes are selected compilation fails. This is due to a change in the definition of pgtable_t introduced by the following patch: commit 5c1f6ee9a31cbdac90bbb8ae1ba4475031ac74b4 Author: Aneesh Kumar K.V <[email protected]> powerpc: Reduce PTE table memory wastage The above patch only implements the new layout for PPC64 so it doesn't compile for PPC32 with a 64K page size. Ideally we should implement the same layout for PPC32 however for the meantime this patch reverts the definition of pgtable_t for PPC32. Signed-off-by: Alistair Popple <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2013-10-30powerpc: FA_DUMP depends on KEXECMichael Ellerman1-1/+1
If you try and build the FA_DUMP code with CONFIG_KEXEC=n, you see errors such as the following: arch/powerpc/kernel/fadump.c 408:2: error: 'crashing_cpu' undeclared (first use in this function) 410:2: error: implicit declaration of function 'crash_save_vmcoreinfo' 513:22: error: storage size of 'prstatus' isn't known 520:2: error: implicit declaration of function 'elf_core_copy_kernel_regs' 521:36: error: 'KEXEC_CORE_NOTE_NAME' undeclared (first use in this function) 624:49: error: 'note_buf_t' undeclared (first use in this function) 872:2: error: implicit declaration of function 'paddr_vmcoreinfo_note' 874:18: error: 'vmcoreinfo_max_size' undeclared (first use in this function) This is because although FA_DUMP doesn't use kexec as the actual reboot mechanism, it does use parts of the kexec code to assemble/disassemble the crash image. Signed-off-by: Michael Ellerman <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2013-10-30powerpc: Fix a typo in comments of va to pa conversionVaishnavi Bhat1-1/+1
This patch fixes typo in comments virtual to physical address conversion. Signed-off-by: Vaishnavi Bhat <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
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