Revert "drivers: Add ACPI support for thead-c900-aclint-sswi" #144
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community inclusion
category: feature
bugzilla: RVCK-Project/rvck#143
This reverts commit c8b4f06.
When the SG2044 CPU is running in M-mode or S-mode with MMU disabled, it erroneously processes virtual addresses (VA) by truncating to the lower 40 bits. This defect causes incorrect TLB flushing during execution of sfence.vma rs1, x0 and sfence.vma rs1, rs2 instructions, compromising memory consistency.
A patch implementing S-mode IPI was introduced to avoid executing sfence.vma in M-mode. However, this solution was withdrawn because it negatively impacted compatibility with third-party hardware vendors, and we will adopt other workarounds to address this issue.