[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [PATCH v3 30/34] xen/riscv: add minimal stuff to processor.h to build full Xen
Signed-off-by: Oleksii Kurochko <oleksii.kurochko@xxxxxxxxx> --- Changes in V3: - Update the commit message - rename get_processor_id to smp_processor_id - code style fixes - update the cpu_relax instruction: use pause instruction instead of div %0, %0, zero --- Changes in V2: - Nothing changed. Only rebase. --- xen/arch/riscv/include/asm/processor.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/xen/arch/riscv/include/asm/processor.h b/xen/arch/riscv/include/asm/processor.h index 6db681d805..a3bff6c9c3 100644 --- a/xen/arch/riscv/include/asm/processor.h +++ b/xen/arch/riscv/include/asm/processor.h @@ -12,6 +12,9 @@ #ifndef __ASSEMBLY__ +/* TODO: need to be implemeted */ +#define smp_processor_id() 0 + /* On stack VCPU state */ struct cpu_user_regs { @@ -53,6 +56,18 @@ struct cpu_user_regs unsigned long pregs; }; +/* TODO: need to implement */ +#define cpu_to_core(cpu) (0) +#define cpu_to_socket(cpu) (0) + +static inline void cpu_relax(void) +{ + /* Encoding of the pause instruction */ + __asm__ __volatile__ ( ".insn 0x100000F" ); + + barrier(); +} + static inline void wfi(void) { __asm__ __volatile__ ("wfi"); -- 2.43.0
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