Searched hist:bac7ca7b (Results 1 – 2 of 2) sorted by relevance
/openbmc/linux/arch/powerpc/kernel/ |
H A D | module_32.c | bac7ca7b Tue Apr 02 15:47:22 CDT 2019 Andrey Abramov <st5pub@yandex.ru> powerpc: module_[32|64].c: replace swap function with built-in one
Replace relaswap with built-in one, because relaswap does a simple byte to byte swap.
Since Spectre mitigations have made indirect function calls more expensive, and the default simple byte copies swap is implemented without them, an "optimized" custom swap function is now a waste of time as well as code.
Signed-off-by: Andrey Abramov <st5pub@yandex.ru> Reviewed-by: George Spelvin <lkml@sdf.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/994931554238042@iva8-b333b7f98ab0.qloud-c.yandex.net bac7ca7b Tue Apr 02 15:47:22 CDT 2019 Andrey Abramov <st5pub@yandex.ru> powerpc: module_[32|64].c: replace swap function with built-in one Replace relaswap with built-in one, because relaswap does a simple byte to byte swap. Since Spectre mitigations have made indirect function calls more expensive, and the default simple byte copies swap is implemented without them, an "optimized" custom swap function is now a waste of time as well as code. Signed-off-by: Andrey Abramov <st5pub@yandex.ru> Reviewed-by: George Spelvin <lkml@sdf.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/994931554238042@iva8-b333b7f98ab0.qloud-c.yandex.net
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H A D | module_64.c | bac7ca7b Tue Apr 02 15:47:22 CDT 2019 Andrey Abramov <st5pub@yandex.ru> powerpc: module_[32|64].c: replace swap function with built-in one
Replace relaswap with built-in one, because relaswap does a simple byte to byte swap.
Since Spectre mitigations have made indirect function calls more expensive, and the default simple byte copies swap is implemented without them, an "optimized" custom swap function is now a waste of time as well as code.
Signed-off-by: Andrey Abramov <st5pub@yandex.ru> Reviewed-by: George Spelvin <lkml@sdf.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/994931554238042@iva8-b333b7f98ab0.qloud-c.yandex.net bac7ca7b Tue Apr 02 15:47:22 CDT 2019 Andrey Abramov <st5pub@yandex.ru> powerpc: module_[32|64].c: replace swap function with built-in one Replace relaswap with built-in one, because relaswap does a simple byte to byte swap. Since Spectre mitigations have made indirect function calls more expensive, and the default simple byte copies swap is implemented without them, an "optimized" custom swap function is now a waste of time as well as code. Signed-off-by: Andrey Abramov <st5pub@yandex.ru> Reviewed-by: George Spelvin <lkml@sdf.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/994931554238042@iva8-b333b7f98ab0.qloud-c.yandex.net
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