linux.git/arch/powerpc/kernel/vdso/cacheflush.S, branch v6.6 Linux kernel source tree powerpc/vdso: Fix __kernel_sync_dicache sequence with coherent icache 2022-07-27T11:36:04+00:00 Nicholas Piggin npiggin@gmail.com 2022-05-20T12:36:49+00:00 28f07fab26319dacc5675ae01dfc84d82122c59b Processors with coherent icache require the sequence sync ; icbi ; isync to entire store->execute coherency. icbi (to any address) must be executed to ensure isync flushes the pipeline. See "POWER9 Processor User's Manual, 4.6.2.2 Instruction Cache Block Invalidate (icbi)" for details. __kernel_sync_dicache is missing icbi for the coherent icache path. Add it. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220520123649.258440-1-npiggin@gmail.com 
Processors with coherent icache require the sequence sync ; icbi ; isync
to entire store->execute coherency. icbi (to any address) must be
executed to ensure isync flushes the pipeline. See "POWER9 Processor
User's Manual, 4.6.2.2 Instruction Cache Block Invalidate (icbi)" for
details.

__kernel_sync_dicache is missing icbi for the coherent icache path.
Add it.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220520123649.258440-1-npiggin@gmail.com
powerpc/vdso: Merge vdso64 and vdso32 into a single directory 2022-02-12T11:47:43+00:00 Christophe Leroy christophe.leroy@csgroup.eu 2022-01-21T16:30:27+00:00 fd1feade75fb1a9275c39d76c5ccdbbbe6b37aa3 merge vdso64 into vdso32 and rename it vdso. Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/4dbe05cc130f6a0858d09ac72e436c373cb08b70.1642782130.git.christophe.leroy@csgroup.eu 
merge vdso64 into vdso32 and rename it vdso.

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/4dbe05cc130f6a0858d09ac72e436c373cb08b70.1642782130.git.christophe.leroy@csgroup.eu