Hi Oleksii, On 26/02/2024 17:38, Oleksii Kurochko wrote:
From the unpriviliged doc: No standard hints are presently defined. We anticipate standard hints to eventually include memory-system spatial and temporal locality hints, branch prediction hints, thread-scheduling hints, security tags, and instrumentation flags for simulation/emulation.Also, there are no speculation execution barriers. Therefore, functions evaluate_nospec() and block_speculation() should remain empty until a specific platform has an extension to deal with speculation execution. Signed-off-by: Oleksii Kurochko <oleksii.kuroc...@gmail.com> --- Changes in V5: - new patch --- xen/arch/riscv/include/asm/nospec.h | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) create mode 100644 xen/arch/riscv/include/asm/nospec.h diff --git a/xen/arch/riscv/include/asm/nospec.h b/xen/arch/riscv/include/asm/nospec.h new file mode 100644 index 0000000000..4fb404a0a2 --- /dev/null +++ b/xen/arch/riscv/include/asm/nospec.h @@ -0,0 +1,25 @@ +/* SPDX-License-Identifier: GPL-2.0 */
New file should use the SPDX tag GPL-2.0-only. I guess this could be fixed on commit?
Cheers, -- Julien Grall
