pointer masking: Let pointer masking not apply when both MPRV and MXR are set

YenHaoChen · YenHaoChen · commit fb761259b325 · 2024-07-06T03:30:41.000+08:00
diff --git a/riscv/mmu.cc b/riscv/mmu.cc
@@ -614,7 +614,7 @@ void mmu_t::register_memtracer(memtracer_t* t)
 }
 
 reg_t mmu_t::get_pmlen(bool effective_virt, reg_t effective_priv) const {
-  if (!proc || proc->get_xlen() != 64)
+  if (!proc || proc->get_xlen() != 64 || (in_mprv() && (proc->state.sstatus->read() & MSTATUS_MXR)))
     return 0;
 
   reg_t pmm = 0;

Original file line number	Diff line number	Diff line change
`@@ -614,7 +614,7 @@ void mmu_t::register_memtracer(memtracer_t* t)`
`614`	`614`	`}`
`615`	`615`
`616`	`616`	`reg_t mmu_t::get_pmlen(bool effective_virt, reg_t effective_priv) const {`
`617`		`- if (!proc \|\| proc->get_xlen() != 64)`
	`617`	`+ if (!proc \|\| proc->get_xlen() != 64 \|\| (in_mprv() && (proc->state.sstatus->read() & MSTATUS_MXR)))`
`618`	`618`	`return 0;`
`619`	`619`
`620`	`620`	`reg_t pmm = 0;`