Hi Sergey, On Mon, Aug 29, 2022 at 9:53 PM Sergey Matyukevich <geomatsi@xxxxxxxxx> wrote: > > From: Sergey Matyukevich <sergey.matyukevich@xxxxxxxxxxxxx> > > Current implementation of update_mmu_cache function performs local TLB > flush. It does not take into account ASID information. Besides, it does > not take into account other harts currently running the same mm context > or possible migration of the running context to other harts. Meanwhile > TLB flush is not performed for every context switch if ASID support > is enabled. > > Patch [1] proposed to add ASID support to update_mmu_cache to avoid > flushing local TLB entirely. This patch takes into account other > harts currently running the same mm context as well as possible > migration of this context to other harts. > > For this purpose the approach from flush_icache_mm is reused. Remote > harts currently running the same mm context are informed via SBI calls > that they need to flush their local TLBs. All the other harts are marked > as needing a deferred TLB flush when this mm context runs on them. > > [1] https://lore.kernel.org/linux-riscv/20220821013926.8968-1-tjytimi@xxxxxxx/ > > Signed-off-by: Sergey Matyukevich <sergey.matyukevich@xxxxxxxxxxxxx> > --- > arch/riscv/include/asm/mmu.h | 2 ++ > arch/riscv/include/asm/pgtable.h | 2 +- > arch/riscv/include/asm/tlbflush.h | 18 ++++++++++++++++++ > arch/riscv/mm/context.c | 10 ++++++++++ > arch/riscv/mm/tlbflush.c | 28 +++++++++++----------------- > 5 files changed, 42 insertions(+), 18 deletions(-) > I couldn't find your latest patch in my mailbox so I'm replying to this one. I merged Palmer's for-next branch and when running tests on eMMC with bonnie++ on the Renesas RZ/Five SoC I am seeing the below issues: root@smarc-rzfive:/lava-testing# ./emmc_t_002.sh Welcome to fdisk (util-linux 2.35.1). Changes will remain in memory only, until you decide to write them. Be careful before using the write command. [ 40.809677] mmcblk0: p1 Command (m for help): Created a new DOS disklabel with disk identifier 0xf4682ae9. Command (m for help): Partition type p primary (0 primary, 0 extended, 4 free) e extended (container for logical partitions) Select (default p): Partition number (1-4, default 1): First sector (2048-124321791, default 2048): Last sector, +/-sectors or +/-size{K,M,G,T,P} (2048-124321791, default 124321791): Created a new partition 1 of type 'Linux' and of size 59.3 GiB. Partition #1 contains a ext4 signature. Command (m for help): The partition table has been altered. Calling ioctl() to re-read partition table. [ 40.945583] mmcblk0: p1 Syncing disks. mke2fs 1.45.7 (28-Jan-2021) /dev/mmcblk0p1 contains a ext4 file system last mounted on /tmp/tmp.PDgTkhohqt/mnt on Fri Dec 16 19:48:34 2022 Discarding device blocks: done Creating filesystem with 15539968 4k blocks and 3891200 inodes Filesystem UUID: 6effbf47-2d7a-4eb8-b2dc-1333b848e449 Superblock backups stored on blocks: 32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208, 4096000, 7962624, 11239424 Allocating group tables: done Writing inode tables: done Creating journal (65536 blocks): done Writing superblocks and filesystem accounting information: done e2fsck 1.45.7 (28-Jan-2021) Pass 1: Checking inodes, blocks, and sizes Pass 2: Checking directory structure Pass 3: Checking directory connectivity Pass 4: Checking reference counts Pass 5: Checking group summary information /dev/mmcblk0p1: 11/3891200 files (0.0% non-contiguous), 323121/15539968 blocks [ 91.521828] EXT4-fs (mmcblk0p1): mounted filesystem 6effbf47-2d7a-4eb8-b2dc-1333b848e449 with ordered data mode. Quota mode: disabled. Using uid:0, gid:0. Writing with putc()...[ 131.775220] do_trap: 3 callbacks suppressed [ 131.775245] sd-resolve[128]: unhandled signal 11 code 0x1 at 0x0000000000000060 in libpthread-2.28.so[3fa6d80000+13000] [ 131.790382] CPU: 0 PID: 128 Comm: sd-resolve Not tainted 6.1.0-11009-gf4e9a8cdc25b #167 [ 131.798386] Hardware name: Renesas SMARC EVK based on r9a07g043f01 (DT) [ 131.804999] epc : 0000003fa6d8eeac ra : 0000003fa6f4a76c sp : 0000003fa6b8c330 [ 131.812214] gp : 0000002aacc1cb88 tp : 0000003fa6b92810 t0 : 0000000000000022 [ 131.819432] t1 : 0000003fa6e7f0ec t2 : 0000003fa6b8b290 s0 : 0000003fa6b8c850 [ 131.826669] s1 : 0000002aacc1f430 a0 : 000000000000000a a1 : 0000003fa6b8c3b8 [ 131.833891] a2 : 0000000000004000 a3 : 0000000000000000 a4 : 0000000000000020 [ 131.841110] a5 : 0000000000000002 a6 : 0000003fa6b8c360 a7 : 0000000000000007 [ 131.848328] s2 : ffffffffffffb000 s3 : ffffffffffffd3d0 s4 : 0000003fa6fe0918 [ 131.855561] s5 : 0000003fa6b8ec20 s6 : 0000003fa6b8c440 s7 : fffffffffffffffd [ 131.862783] s8 : 0000003fa6b8c420 s9 : 000000000000000a s10: 0000000000000000 [ 131.870001] s11: 0000003fa6fe2090 t3 : 0000003fa6d8eeaa t4 : 00000009a331f45c [ 131.877219] t5 : 000000000000003f t6 : 0000000000000000 [ 131.882548] status: 8000000200006020 badaddr: 0000000000000060 cause: 000000000000000d [ 131.891349] systemd-journal[87]: unhandled signal 11 code 0x1 at 0x00000000000000c8 in systemd-journald[2abd710000+1b000] [ 131.902382] CPU: 0 PID: 87 Comm: systemd-journal Not tainted 6.1.0-11009-gf4e9a8cdc25b #167 [ 131.910731] Hardware name: Renesas SMARC EVK based on r9a07g043f01 (DT) [ 131.917359] epc : 0000002abd7167e0 ra : 0000002abd7179e4 sp : 0000003fd65416c0 [ 131.924578] gp : 0000002abd72e120 tp : 0000003fbea1f720 t0 : 3534616138333466 [ 131.931796] t1 : ffffffffffffe000 t2 : 000000000000000d s0 : 0000003fd65416c0 [ 131.939014] s1 : 0000003fd65437a8 a0 : 0000000000000009 a1 : 0000003fd65416c0 [ 131.946232] a2 : 0000000000002000 a3 : 0000003fd65437a8 a4 : 0000003fd65436c8 [ 131.953450] a5 : 0000003fd65436d0 a6 : 0000000000000083 a7 : 0000000000000018 [ 131.960668] s2 : 0000003fbee6c918 s3 : 0000003fd6543708 s4 : 0000003fd6543700 [ 131.967885] s5 : 0000002abd724718 s6 : 0000002abd7247d8 s7 : 0000000000000000 [ 131.975102] s8 : ffffffffffffffff s9 : 0000002ad2397120 s10: 0000000000000000 [ 131.982319] s11: 0000003fe5aad418 t3 : 0000003fbed75364 t4 : 00000009a7934adc [ 131.989564] t5 : 00000000001ea8b0 t6 : 3463396363613637 [ 131.994883] status: 0000000200004020 badaddr: 00000000000000c8 cause: 000000000000000d [ 132.003911] audit: type=1701 audit(1671220069.615:11): auid=4294967295 uid=0 gid=0 ses=4294967295 pid=87 comm="systemd-journal" exe="/lib/systemd/systemd-journald" sig=11 res=1 [ 132.024142] systemd[1]: unhandled signal 11 code 0x1 at 0xffffffac2b2a2928 in ld-2.28.so[3f83a6e000+17000] [ 132.033946] CPU: 0 PID: 1 Comm: systemd Not tainted 6.1.0-11009-gf4e9a8cdc25b #167 [ 132.041563] Hardware name: Renesas SMARC EVK based on r9a07g043f01 (DT) [ 132.048198] epc : 0000003f83a7a81c ra : 0000003f83a7a992 sp : 0000003fe5aad570 [ 132.055419] gp : 0000002ad234ad28 tp : 0000003f83628e70 t0 : 0000000000a9919e [ 132.062635] t1 : 0000003f8391f7dc t2 : 0000000000000000 s0 : 0000003f83a664d0 [ 132.069852] s1 : 0000003f83a85918 a0 : 0000000000000001 a1 : 0000003f83a20940 [ 132.077068] a2 : 0000003f83629680 a3 : 0000000000000073 a4 : 0000000000000001 [ 132.084284] a5 : 0000003f83a87090 a6 : 000000000000002f a7 : 0000000000062164 [ 132.091501] s2 : 0000002ad22cdce0 s3 : 0000003f83a85918 s4 : 0000000000000006 [ 132.098722] s5 : 0000000000000002 s6 : 0000003f83a85918 s7 : 0000000000001000 [ 132.105939] s8 : 0000003fe5aad750 s9 : 0000003fe5aad9e0 s10: 0000002ad22fdd60 [ 132.113155] s11: 2f2e2d2c2b2a2928 t3 : 0000003f83a7a9cc t4 : 0000000000000068 [ 132.120371] t5 : 0000000052d19905 t6 : 0000000000d19905 [ 132.125686] status: 0000000200004020 badaddr: ffffffac2b2a2928 cause: 000000000000000d [ 132.145321] audit: type=1701 audit(1671220069.747:12): auid=4294967295 uid=995 gid=994 ses=4294967295 pid=126 comm="sd-resolve" exe="/lib/systemd/systemd-timesyncd" sig=11 res=1 [ 132.161689] systemd[1]: unhandled signal 11 code 0x1 at 0x0000006c6b6a6968 [ 132.168714] CPU: 0 PID: 1 Comm: systemd Not tainted 6.1.0-11009-gf4e9a8cdc25b #167 [ 132.176293] Hardware name: Renesas SMARC EVK based on r9a07g043f01 (DT) [ 132.182906] epc : 0000006c6b6a6968 ra : 0000003f838630b2 sp : 0000003fe5aace60 [ 132.190125] gp : 0000002ad234ad28 tp : 0000003f83628e70 t0 : 0000000000a9919e [ 132.197357] t1 : 0000003f838595fc t2 : 0000000000000000 s0 : 0000003fe5aad050 [ 132.204574] s1 : 0000000000000000 a0 : 0000003fe5aace70 a1 : 0000003fe5aad058 [ 132.211791] a2 : 0000000000000080 a3 : 0000000000000010 a4 : 0000000000000001 [ 132.219007] a5 : 0000003f839a1784 a6 : 0000000000000000 a7 : 0000000000000000 [ 132.226223] s2 : 0000000000000011 s3 : 000000000000000b s4 : 0000000000000006 [ 132.233439] s5 : 0000000000000002 s6 : 0000003f83a85918 s7 : 0000000000001000 [ 132.240655] s8 : 0000003fe5aad750 s9 : 0000003fe5aad9e0 s10: 0000002ad22fdd60 [ 132.247872] s11: 2f2e2d2c2b2a2928 t3 : 6f6e6d6c6b6a6968 t4 : 0000000000000068 [ 132.255088] t5 : 0000000052d19905 t6 : 0000000000d19905 [ 132.260403] status: 0000000200004020 badaddr: 0000006c6b6a6968 cause: 000000000000000c [ 132.269759] systemd[1]: unhandled signal 11 code 0x1 at 0x0000006c6b6a6968 [ 132.276708] CPU: 0 PID: 1 Comm: systemd Not tainted 6.1.0-11009-gf4e9a8cdc25b #167 [ 132.284283] Hardware name: Renesas SMARC EVK based on r9a07g043f01 (DT) [ 132.290895] epc : 0000006c6b6a6968 ra : 0000003f838630b2 sp : 0000003fe5aac750 [ 132.298113] gp : 0000002ad234ad28 tp : 0000003f83628e70 t0 : 0000000000a9919e [ 132.305363] t1 : 0000003f838595fc t2 : 0000000000000000 s0 : 0000003fe5aac940 [ 132.312580] s1 : 0000000000000000 a0 : 0000003fe5aac760 a1 : 0000003fe5aac948 [ 132.319796] a2 : 0000000000000080 a3 : 0000000000000010 a4 : 0000000000000001 [ 132.327013] a5 : 0000003f839a1784 a6 : 0000000000000000 a7 : 0000000000000000 [ 132.334229] s2 : 0000000000000011 s3 : 000000000000000b s4 : 0000000000000006 [ 132.341444] s5 : 0000000000000002 s6 : 0000003f83a85918 s7 : 0000000000001000 [ 132.348660] s8 : 0000003fe5aad750 s9 : 0000003fe5aad9e0 s10: 0000002ad22fdd60 [ 132.355877] s11: 2f2e2d2c2b2a2928 t3 : 6f6e6d6c6b6a6968 t4 : 0000000000000068 [ 132.363093] t5 : 0000000052d19905 t6 : 0000000000d19905 [ 132.368408] status: 0000000200004020 badaddr: 0000006c6b6a6968 cause: 000000000000000c [ 132.377123] systemd[1]: unhandled signal 11 code 0x1 at 0x0000006c6b6a6968 [ 132.384078] CPU: 0 PID: 1 Comm: systemd Not tainted 6.1.0-11009-gf4e9a8cdc25b #167 [ 132.391652] Hardware name: Renesas SMARC EVK based on r9a07g043f01 (DT) [ 132.398262] epc : 0000006c6b6a6968 ra : 0000003f838630b2 sp : 0000003fe5aac040 [ 132.405479] gp : 0000002ad234ad28 tp : 0000003f83628e70 t0 : 0000000000a9919e [ 132.412745] t1 : 0000003f838595fc t2 : 0000000000000000 s0 : 0000003fe5aac230 [ 132.419967] s1 : 0000000000000000 a0 : 0000003fe5aac050 a1 : 0000003fe5aac238 [ 132.427184] a2 : 0000000000000080 a3 : 0000000000000010 a4 : 0000000000000001 [ 132.434401] a5 : 0000003f839a1784 a6 : 0000000000000000 a7 : 0000000000000000 [ 132.441618] s2 : 0000000000000011 s3 : 000000000000000b s4 : 0000000000000006 [ 132.448833] s5 : 0000000000000002 s6 : 0000003f83a85918 s7 : 0000000000001000 [ 132.456049] s8 : 0000003fe5aad750 s9 : 0000003fe5aad9e0 s10: 0000002ad22fdd60 [ 132.463265] s11: 2f2e2d2c2b2a2928 t3 : 6f6e6d6c6b6a6968 t4 : 0000000000000068 [ 132.470480] t5 : 0000000052d19905 t6 : 0000000000d19905 [ 132.475804] status: 0000000200004020 badaddr: 0000006c6b6a6968 cause: 000000000000000c [ 132.496855] systemd[1]: unhandled signal 11 code 0x1 at 0x0000006c6b6a6968 [ 132.503842] CPU: 0 PID: 1 Comm: systemd Not tainted 6.1.0-11009-gf4e9a8cdc25b #167 [ 132.511415] Hardware name: Renesas SMARC EVK based on r9a07g043f01 (DT) [ 132.518027] epc : 0000006c6b6a6968 ra : 0000003f838630b2 sp : 0000003fe5aab930 [ 132.525244] gp : 0000002ad234ad28 tp : 0000003f83628e70 t0 : 0000000000a9919e [ 132.532462] t1 : 0000003f838595fc t2 : 0000000000000000 s0 : 0000003fe5aabb20 [ 132.539678] s1 : 0000000000000000 a0 : 0000003fe5aab940 a1 : 0000003fe5aabb28 [ 132.546939] a2 : 0000000000000080 a3 : 0000000000000010 a4 : 0000000000000001 [ 132.554161] a5 : 0000003f839a1784 a6 : 0000000000000000 a7 : 0000000000000000 [ 132.561378] s2 : 0000000000000011 s3 : 000000000000000b s4 : 0000000000000006 [ 132.568595] s5 : 0000000000000002 s6 : 0000003f83a85918 s7 : 0000000000001000 [ 132.575812] s8 : 0000003fe5aad750 s9 : 0000003fe5aad9e0 s10: 0000002ad22fdd60 [ 132.583029] s11: 2f2e2d2c2b2a2928 t3 : 6f6e6d6c6b6a6968 t4 : 0000000000000068 [ 132.590246] t5 : 0000000052d19905 t6 : 0000000000d19905 [ 132.595561] status: 0000000200004020 badaddr: 0000006c6b6a6968 cause: 000000000000000c [ 132.604448] systemd[1]: unhandled signal 11 code 0x1 at 0x0000006c6b6a6968 [ 132.611424] CPU: 0 PID: 1 Comm: systemd Not tainted 6.1.0-11009-gf4e9a8cdc25b #167 [ 132.618987] Hardware name: Renesas SMARC EVK based on r9a07g043f01 (DT) [ 132.625606] epc : 0000006c6b6a6968 ra : 0000003f838630b2 sp : 0000003fe5aab220 [ 132.632818] gp : 0000002ad234ad28 tp : 0000003f83628e70 t0 : 0000000000a9919e [ 132.640035] t1 : 0000003f838595fc t2 : 0000000000000000 s0 : 0000003fe5aab410 [ 132.647252] s1 : 0000000000000000 a0 : 0000003fe5aab230 a1 : 0000003fe5aab418 [ 132.654467] a2 : 0000000000000080 a3 : 0000000000000010 a4 : 0000000000000001 [ 132.661682] a5 : 0000003f839a1784 a6 : 0000000000000000 a7 : 0000000000000000 [ 132.668898] s2 : 0000000000000011 s3 : 000000000000000b s4 : 0000000000000006 [ 132.676113] s5 : 0000000000000002 s6 : 0000003f83a85918 s7 : 0000000000001000 [ 132.683329] s8 : 0000003fe5aad750 s9 : 0000003fe5aad9e0 s10: 0000002ad22fdd60 [ 132.690556] s11: 2f2e2d2c2b2a2928 t3 : 6f6e6d6c6b6a6968 t4 : 0000000000000068 [ 132.697773] t5 : 0000000052d19905 t6 : 0000000000d19905 [ 132.703086] status: 0000000200004020 badaddr: 0000006c6b6a6968 cause: 000000000000000c [ 132.993558] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b [ 133.001210] CPU: 0 PID: 1 Comm: systemd Not tainted 6.1.0-11009-gf4e9a8cdc25b #167 [ 133.008752] Hardware name: Renesas SMARC EVK based on r9a07g043f01 (DT) [ 133.015338] Call Trace: [ 133.017778] [<ffffffff800055cc>] dump_backtrace+0x1c/0x24 [ 133.023174] [<ffffffff80776836>] show_stack+0x2c/0x38 [ 133.028214] [<ffffffff80780244>] dump_stack_lvl+0x3c/0x54 [ 133.033597] [<ffffffff80780270>] dump_stack+0x14/0x1c [ 133.038633] [<ffffffff80776c00>] panic+0x102/0x29a [ 133.043409] [<ffffffff800137ba>] do_exit+0x704/0x70a [ 133.048362] [<ffffffff8001390e>] do_group_exit+0x24/0x70 [ 133.053659] [<ffffffff8001de54>] get_signal+0x68a/0x6dc [ 133.058874] [<ffffffff8000494e>] do_work_pending+0xd6/0x44e [ 133.064427] [<ffffffff800036c2>] resume_userspace_slow+0x8/0xa [ 133.070249] ---[ end Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b ]--- If I revert this patch [0] bonnie++ works as expected. Any pointers on what could be the issue here? [0] https://git.kernel.org/pub/scm/linux/kernel/git/palmer/linux.git/commit/?h=for-next&id=4bd1d80efb5af640f99157f39b50fb11326ce641 Cheers, Prabhakar > diff --git a/arch/riscv/include/asm/mmu.h b/arch/riscv/include/asm/mmu.h > index cedcf8ea3c76..86670a1b4ffd 100644 > --- a/arch/riscv/include/asm/mmu.h > +++ b/arch/riscv/include/asm/mmu.h > @@ -20,6 +20,8 @@ typedef struct { > #ifdef CONFIG_SMP > /* A local icache flush is needed before user execution can resume. */ > cpumask_t icache_stale_mask; > + /* A local tlb flush is needed before user execution can resume. */ > + cpumask_t tlb_stale_mask; > #endif > } mm_context_t; > > diff --git a/arch/riscv/include/asm/pgtable.h b/arch/riscv/include/asm/pgtable.h > index 7ec936910a96..330f75fe1278 100644 > --- a/arch/riscv/include/asm/pgtable.h > +++ b/arch/riscv/include/asm/pgtable.h > @@ -415,7 +415,7 @@ static inline void update_mmu_cache(struct vm_area_struct *vma, > * Relying on flush_tlb_fix_spurious_fault would suffice, but > * the extra traps reduce performance. So, eagerly SFENCE.VMA. > */ > - local_flush_tlb_page(address); > + flush_tlb_page(vma, address); > } > > static inline void update_mmu_cache_pmd(struct vm_area_struct *vma, > diff --git a/arch/riscv/include/asm/tlbflush.h b/arch/riscv/include/asm/tlbflush.h > index 801019381dea..907b9efd39a8 100644 > --- a/arch/riscv/include/asm/tlbflush.h > +++ b/arch/riscv/include/asm/tlbflush.h > @@ -22,6 +22,24 @@ static inline void local_flush_tlb_page(unsigned long addr) > { > ALT_FLUSH_TLB_PAGE(__asm__ __volatile__ ("sfence.vma %0" : : "r" (addr) : "memory")); > } > + > +static inline void local_flush_tlb_all_asid(unsigned long asid) > +{ > + __asm__ __volatile__ ("sfence.vma x0, %0" > + : > + : "r" (asid) > + : "memory"); > +} > + > +static inline void local_flush_tlb_page_asid(unsigned long addr, > + unsigned long asid) > +{ > + __asm__ __volatile__ ("sfence.vma %0, %1" > + : > + : "r" (addr), "r" (asid) > + : "memory"); > +} > + > #else /* CONFIG_MMU */ > #define local_flush_tlb_all() do { } while (0) > #define local_flush_tlb_page(addr) do { } while (0) > diff --git a/arch/riscv/mm/context.c b/arch/riscv/mm/context.c > index 7acbfbd14557..80ce9caba8d2 100644 > --- a/arch/riscv/mm/context.c > +++ b/arch/riscv/mm/context.c > @@ -196,6 +196,16 @@ static void set_mm_asid(struct mm_struct *mm, unsigned int cpu) > > if (need_flush_tlb) > local_flush_tlb_all(); > +#ifdef CONFIG_SMP > + else { > + cpumask_t *mask = &mm->context.tlb_stale_mask; > + > + if (cpumask_test_cpu(cpu, mask)) { > + cpumask_clear_cpu(cpu, mask); > + local_flush_tlb_all_asid(cntx & asid_mask); > + } > + } > +#endif > } > > static void set_mm_noasid(struct mm_struct *mm) > diff --git a/arch/riscv/mm/tlbflush.c b/arch/riscv/mm/tlbflush.c > index 37ed760d007c..ce7dfc81bb3f 100644 > --- a/arch/riscv/mm/tlbflush.c > +++ b/arch/riscv/mm/tlbflush.c > @@ -5,23 +5,7 @@ > #include <linux/sched.h> > #include <asm/sbi.h> > #include <asm/mmu_context.h> > - > -static inline void local_flush_tlb_all_asid(unsigned long asid) > -{ > - __asm__ __volatile__ ("sfence.vma x0, %0" > - : > - : "r" (asid) > - : "memory"); > -} > - > -static inline void local_flush_tlb_page_asid(unsigned long addr, > - unsigned long asid) > -{ > - __asm__ __volatile__ ("sfence.vma %0, %1" > - : > - : "r" (addr), "r" (asid) > - : "memory"); > -} > +#include <asm/tlbflush.h> > > void flush_tlb_all(void) > { > @@ -31,6 +15,7 @@ void flush_tlb_all(void) > static void __sbi_tlb_flush_range(struct mm_struct *mm, unsigned long start, > unsigned long size, unsigned long stride) > { > + struct cpumask *pmask = &mm->context.tlb_stale_mask; > struct cpumask *cmask = mm_cpumask(mm); > unsigned int cpuid; > bool broadcast; > @@ -44,6 +29,15 @@ static void __sbi_tlb_flush_range(struct mm_struct *mm, unsigned long start, > if (static_branch_unlikely(&use_asid_allocator)) { > unsigned long asid = atomic_long_read(&mm->context.id); > > + /* > + * TLB will be immediately flushed on harts concurrently > + * executing this MM context. TLB flush on other harts > + * is deferred until this MM context migrates there. > + */ > + cpumask_setall(pmask); > + cpumask_clear_cpu(cpuid, pmask); > + cpumask_andnot(pmask, pmask, cmask); > + > if (broadcast) { > sbi_remote_sfence_vma_asid(cmask, start, size, asid); > } else if (size <= stride) { > -- > 2.37.1 > > > _______________________________________________ > linux-riscv mailing list > linux-riscv@xxxxxxxxxxxxxxxxxxx > http://lists.infradead.org/mailman/listinfo/linux-riscv
