kernel/arch/powerpc/include/asm/nohash, branch linux-6.2.y

Merge tag 'powerpc-6.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

2022-12-19T13:13:33Z

Pull powerpc updates from Michael Ellerman: - Add powerpc qspinlock implementation optimised for large system scalability and paravirt. See the merge message for more details - Enable objtool to be built on powerpc to generate mcount locations - Use a temporary mm for code patching with the Radix MMU, so the writable mapping is restricted to the patching CPU - Add an option to build the 64-bit big-endian kernel with the ELFv2 ABI - Sanitise user registers on interrupt entry on 64-bit Book3S - Many other small features and fixes Thanks to Aboorva Devarajan, Angel Iglesias, Benjamin Gray, Bjorn Helgaas, Bo Liu, Chen Lifu, Christoph Hellwig, Christophe JAILLET, Christophe Leroy, Christopher M. Riedl, Colin Ian King, Deming Wang, Disha Goel, Dmitry Torokhov, Finn Thain, Geert Uytterhoeven, Gustavo A. R. Silva, Haowen Bai, Joel Stanley, Jordan Niethe, Julia Lawall, Kajol Jain, Laurent Dufour, Li zeming, Miaoqian Lin, Michael Jeanson, Nathan Lynch, Naveen N. Rao, Nayna Jain, Nicholas Miehlbradt, Nicholas Piggin, Pali Rohár, Randy Dunlap, Rohan McLure, Russell Currey, Sathvika Vasireddy, Shaomin Deng, Stephen Kitt, Stephen Rothwell, Thomas Weißschuh, Tiezhu Yang, Uwe Kleine-König, Xie Shaowen, Xiu Jianfeng, XueBing Chen, Yang Yingliang, Zhang Jiaming, ruanjinjie, Jessica Yu, and Wolfram Sang. * tag 'powerpc-6.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (181 commits) powerpc/code-patching: Fix oops with DEBUG_VM enabled powerpc/qspinlock: Fix 32-bit build powerpc/prom: Fix 32-bit build powerpc/rtas: mandate RTAS syscall filtering powerpc/rtas: define pr_fmt and convert printk call sites powerpc/rtas: clean up includes powerpc/rtas: clean up rtas_error_log_max initialization powerpc/pseries/eeh: use correct API for error log size powerpc/rtas: avoid scheduling in rtas_os_term() powerpc/rtas: avoid device tree lookups in rtas_os_term() powerpc/rtasd: use correct OF API for event scan rate powerpc/rtas: document rtas_call() powerpc/pseries: unregister VPA when hot unplugging a CPU powerpc/pseries: reset the RCU watchdogs after a LPM powerpc: Take in account addition CPU node when building kexec FDT powerpc: export the CPU node count powerpc/cpuidle: Set CPUIDLE_FLAG_POLLING for snooze state powerpc/dts/fsl: Fix pca954x i2c-mux node names cxl: Remove unnecessary cxl_pci_window_alignment() selftests/powerpc: Fix resource leaks ...

mm: Convert __HAVE_ARCH_P..P_GET to the new style

2022-12-15T18:37:27Z

Since __HAVE_ARCH_* style guards have been depricated in favour of defining the function name onto itself, convert pxxp_get(). Suggested-by: Linus Torvalds Signed-off-by: Peter Zijlstra (Intel) Link: https://lkml.kernel.org/r/Y2EUEBlQXNgaJgoI@hirez.programming.kicks-ass.net

powerpc/tlb: Add local flush for page given mm_struct and psize

2022-11-30T10:46:49Z

Adds a local TLB flush operation that works given an mm_struct, VA to flush, and page size representation. Most implementations mirror the surrounding code. The book3s/32/tlbflush.h implementation is left as a BUILD_BUG because it is more complicated and not required for anything as yet. This removes the need to create a vm_area_struct, which the temporary patching mm work does not need. Signed-off-by: Benjamin Gray Reviewed-by: Christophe Leroy Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20221109045112.187069-8-bgray@linux.ibm.com

powerpc/8xx: Reverse order entries are written by __set_pte_at()

2022-11-24T12:31:48Z

At the time being, with 16k pages __set_pte_at() writes table entries in reverse order: 294: 91 49 00 0c stw r10,12(r9) 298: 91 49 00 08 stw r10,8(r9) 29c: 91 49 00 04 stw r10,4(r9) 2a0: 91 49 00 00 stw r10,0(r9) Allthough there should be no impact at all as it stays in a single cacheline, reverse the writing in a more natural order. 288: 91 49 00 0c stw r10,0(r9) 28c: 91 49 00 08 stw r10,4(r9) 290: 91 49 00 04 stw r10,8(r9) 294: 91 49 00 00 stw r10,12(r9) Signed-off-by: Christophe Leroy Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/67c3b5d44edfec054234ea9b4d05fc4b4f7f8a0e.1664346554.git.christophe.leroy@csgroup.eu

powerpc/8xx: Simplify pte_update() with 16k pages

2022-11-24T12:31:48Z

While looking at code generated for code patching, I saw that pte_clear generated: 2d8: 38 a0 00 00 li r5,0 2dc: 38 e0 10 00 li r7,4096 2e0: 39 00 20 00 li r8,8192 2e4: 39 40 30 00 li r10,12288 2e8: 90 a9 00 00 stw r5,0(r9) 2ec: 90 e9 00 04 stw r7,4(r9) 2f0: 91 09 00 08 stw r8,8(r9) 2f4: 91 49 00 0c stw r10,12(r9) With 16k pages, only the first entry is used by the kernel, so no need to adapt the address of other entries. Only duplicate the first entry for hardware. Now it is: 2cc: 39 40 00 00 li r10,0 2d0: 91 49 00 00 stw r10,0(r9) 2d4: 91 49 00 04 stw r10,4(r9) 2d8: 91 49 00 08 stw r10,8(r9) 2dc: 91 49 00 0c stw r10,12(r9) Signed-off-by: Christophe Leroy Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/65f76300de07091a59a042a3db2d0ce9b939a05c.1664346532.git.christophe.leroy@csgroup.eu

powerpc: Remove CONFIG_PPC_BOOK3E_MMU

2022-09-26T13:00:14Z

CONFIG_PPC_BOOK3E_MMU is redundant with CONFIG_PPC_E500. Remove it. Also rename mmu-book3e.h to mmu-e500.h Signed-off-by: Christophe Leroy Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/c5549cd59a131204ff94ab909cad2e2dad4ddf2f.1663606876.git.christophe.leroy@csgroup.eu

powerpc: Remove CONFIG_PPC_FSL_BOOK3E

2022-09-26T13:00:13Z

CONFIG_PPC_FSL_BOOK3E is redundant with CONFIG_PPC_E500. Remove it. And rename five files accordingly. Signed-off-by: Christophe Leroy [mpe: Rename include guards to match new file names] Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/795cb93b88c9a0279289712e674f39e3b108a1b4.1663606876.git.christophe.leroy@csgroup.eu

powerpc: Remove CONFIG_PPC_BOOK3E

2022-09-26T13:00:13Z

CONFIG_PPC_BOOK3E is redundant with CONFIG_PPC_BOOK3E_64. The later is more explicit about the fact that it's a 64 bits target. Remove CONFIG_PPC_BOOK3E. Signed-off-by: Christophe Leroy Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/5d0891490813c19cdcfc04678f512ea68cba3e64.1663606876.git.christophe.leroy@csgroup.eu

powerpc: Remove CONFIG_FSL_BOOKE

2022-09-26T12:47:37Z

PPC_85xx is PPC32 only. PPC_85xx always selects E500 and is the only PPC32 that selects E500. FSL_BOOKE is selected when E500 and PPC32 are selected. So FSL_BOOKE is redundant with PPC_85xx. Remove FSL_BOOKE. And rename four files accordingly. cpu_setup_fsl_booke.S is not renamed because it is linked to PPC_FSL_BOOK3E and not to FSL_BOOKE as suggested by its name. Signed-off-by: Christophe Leroy Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/08e3e15594e66d63b9e89c5b4f9c35153913c28f.1663606875.git.christophe.leroy@csgroup.eu

powerpc/mm: Make PAGE_KERNEL_xxx macros grep-friendly

2022-09-26T10:58:18Z

Avoid multi-lines to help getting a complete view when using grep. They still remain under the 100 chars limit. Signed-off-by: Christophe Leroy Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/3bc3f5a51949ee7f52dba36677db23d4337c7995.1662544980.git.christophe.leroy@csgroup.eu