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H A D | sync_core.h | bf9c912f Thu Aug 06 22:28:33 CDT 2020 Ricardo Neri <ricardo.neri-calderon@linux.intel.com> x86/cpu: Use SERIALIZE in sync_core() when available
The SERIALIZE instruction gives software a way to force the processor to complete all modifications to flags, registers and memory from previous instructions and drain all buffered writes to memory before the next instruction is fetched and executed. Thus, it serves the purpose of sync_core(). Use it when available.
Suggested-by: Andy Lutomirski <luto@kernel.org> Signed-off-by: Ricardo Neri <ricardo.neri-calderon@linux.intel.com> Signed-off-by: Borislav Petkov <bp@suse.de> Reviewed-by: Tony Luck <tony.luck@intel.com> Link: https://lkml.kernel.org/r/20200807032833.17484-1-ricardo.neri-calderon@linux.intel.com bf9c912f Thu Aug 06 22:28:33 CDT 2020 Ricardo Neri <ricardo.neri-calderon@linux.intel.com> x86/cpu: Use SERIALIZE in sync_core() when available The SERIALIZE instruction gives software a way to force the processor to complete all modifications to flags, registers and memory from previous instructions and drain all buffered writes to memory before the next instruction is fetched and executed. Thus, it serves the purpose of sync_core(). Use it when available. Suggested-by: Andy Lutomirski <luto@kernel.org> Signed-off-by: Ricardo Neri <ricardo.neri-calderon@linux.intel.com> Signed-off-by: Borislav Petkov <bp@suse.de> Reviewed-by: Tony Luck <tony.luck@intel.com> Link: https://lkml.kernel.org/r/20200807032833.17484-1-ricardo.neri-calderon@linux.intel.com
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H A D | special_insns.h | bf9c912f Thu Aug 06 22:28:33 CDT 2020 Ricardo Neri <ricardo.neri-calderon@linux.intel.com> x86/cpu: Use SERIALIZE in sync_core() when available
The SERIALIZE instruction gives software a way to force the processor to complete all modifications to flags, registers and memory from previous instructions and drain all buffered writes to memory before the next instruction is fetched and executed. Thus, it serves the purpose of sync_core(). Use it when available.
Suggested-by: Andy Lutomirski <luto@kernel.org> Signed-off-by: Ricardo Neri <ricardo.neri-calderon@linux.intel.com> Signed-off-by: Borislav Petkov <bp@suse.de> Reviewed-by: Tony Luck <tony.luck@intel.com> Link: https://lkml.kernel.org/r/20200807032833.17484-1-ricardo.neri-calderon@linux.intel.com bf9c912f Thu Aug 06 22:28:33 CDT 2020 Ricardo Neri <ricardo.neri-calderon@linux.intel.com> x86/cpu: Use SERIALIZE in sync_core() when available The SERIALIZE instruction gives software a way to force the processor to complete all modifications to flags, registers and memory from previous instructions and drain all buffered writes to memory before the next instruction is fetched and executed. Thus, it serves the purpose of sync_core(). Use it when available. Suggested-by: Andy Lutomirski <luto@kernel.org> Signed-off-by: Ricardo Neri <ricardo.neri-calderon@linux.intel.com> Signed-off-by: Borislav Petkov <bp@suse.de> Reviewed-by: Tony Luck <tony.luck@intel.com> Link: https://lkml.kernel.org/r/20200807032833.17484-1-ricardo.neri-calderon@linux.intel.com
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