Remove MemoryRegionSection check code from sparc_cpu_get_phys_page_debug()

Commit Message

Jean-Christophe Dubois Nov. 22, 2017, 6:32 a.m. UTC

This code is preventing the MMU debug code from displaying virtual
mappings of IO devices (anything that is not located in the RAM).

Before this patch, Qemu would output 0xffffffffffffffff (-1) as the
physical address corresponding to a IO device virtual address.

With this patch the intended physical adresse is displayed.

Signed-off-by: Jean-Christophe Dubois <[e-mail]>
---
 target/sparc/mmu_helper.c | 6 ------
 1 file changed, 6 deletions(-)

Patch

diff --git a/target/sparc/mmu_helper.c b/target/sparc/mmu_helper.c
index d5b6c1e48c..f2d2250e7a 100644
--- a/target/sparc/mmu_helper.c
+++ b/target/sparc/mmu_helper.c
@@ -857,18 +857,12 @@  hwaddr sparc_cpu_get_phys_page_debug(CPUState *cs, vaddr addr)
     CPUSPARCState *env = &cpu->env;
     hwaddr phys_addr;
     int mmu_idx = cpu_mmu_index(env, false);
-    MemoryRegionSection section;
 
     if (cpu_sparc_get_phys_page(env, &phys_addr, addr, 2, mmu_idx) != 0) {
         if (cpu_sparc_get_phys_page(env, &phys_addr, addr, 0, mmu_idx) != 0) {
             return -1;
         }
     }
-    section = memory_region_find(get_system_memory(), phys_addr, 1);
-    memory_region_unref(section.mr);
-    if (!int128_nz(section.size)) {
-        return -1;
-    }
     return phys_addr;
 }
 #endif