Searched hist:ee7c3ec3 (Results 1 – 3 of 3) sorted by relevance
| /openbmc/linux/arch/powerpc/net/ |
| H A D | bpf_jit_comp32.c | ee7c3ec3 Mon Apr 12 06:44:18 CDT 2021 Christophe Leroy <christophe.leroy@csgroup.eu> powerpc/ebpf32: Use standard function call for functions within 32M distance
If the target of a function call is within 32 Mbytes distance, use a
standard function call with 'bl' instead of the 'lis/ori/mtlr/blrl'
sequence.
In the first pass, no memory has been allocated yet and the code
position is not known yet (image pointer is NULL). This pass is there
to calculate the amount of memory to allocate for the EBPF code, so
assume the 4 instructions sequence is required, so that enough memory
is allocated.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/74944a1e3e5cfecc141e440a6ccd37920e186b70.1618227846.git.christophe.leroy@csgroup.eu
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| H A D | bpf_jit.h | ee7c3ec3 Mon Apr 12 06:44:18 CDT 2021 Christophe Leroy <christophe.leroy@csgroup.eu> powerpc/ebpf32: Use standard function call for functions within 32M distance
If the target of a function call is within 32 Mbytes distance, use a
standard function call with 'bl' instead of the 'lis/ori/mtlr/blrl'
sequence.
In the first pass, no memory has been allocated yet and the code
position is not known yet (image pointer is NULL). This pass is there
to calculate the amount of memory to allocate for the EBPF code, so
assume the 4 instructions sequence is required, so that enough memory
is allocated.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/74944a1e3e5cfecc141e440a6ccd37920e186b70.1618227846.git.christophe.leroy@csgroup.eu
|
| /openbmc/linux/arch/powerpc/include/asm/ |
| H A D | ppc-opcode.h | ee7c3ec3 Mon Apr 12 06:44:18 CDT 2021 Christophe Leroy <christophe.leroy@csgroup.eu> powerpc/ebpf32: Use standard function call for functions within 32M distance
If the target of a function call is within 32 Mbytes distance, use a
standard function call with 'bl' instead of the 'lis/ori/mtlr/blrl'
sequence.
In the first pass, no memory has been allocated yet and the code
position is not known yet (image pointer is NULL). This pass is there
to calculate the amount of memory to allocate for the EBPF code, so
assume the 4 instructions sequence is required, so that enough memory
is allocated.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/74944a1e3e5cfecc141e440a6ccd37920e186b70.1618227846.git.christophe.leroy@csgroup.eu
|