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kern: flush memory before reading in KPageTableBase::ReadDebugMemory

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This commit is contained in:
Michael Scire 2021-04-07 08:50:44 -07:00 committed by SciresM
parent 1fce7b08b1
commit 561a16a348
1 changed files with 6 additions and 2 deletions
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8
libraries/libmesosphere/source/kern_k_page_table_base.cpp
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@ -2198,7 +2198,9 @@ namespace ams::kern {
/* Copy as much aligned data as we can. */
if (cur_size >= sizeof(u32)) {
const size_t copy_size = util::AlignDown(cur_size, sizeof(u32));
R_UNLESS(UserspaceAccess::CopyMemoryToUserAligned32Bit(buffer, GetVoidPointer(GetLinearMappedVirtualAddress(cur_addr)), copy_size), svc::ResultInvalidPointer());
const void * copy_src = GetVoidPointer(GetLinearMappedVirtualAddress(cur_addr));
cpu::FlushDataCache(copy_src, copy_size);
R_UNLESS(UserspaceAccess::CopyMemoryToUserAligned32Bit(buffer, copy_src, copy_size), svc::ResultInvalidPointer());
buffer = reinterpret_cast<void *>(reinterpret_cast<uintptr_t>(buffer) + copy_size);
cur_addr += copy_size;
cur_size -= copy_size;
@ -2206,7 +2208,9 @@ namespace ams::kern {
/* Copy remaining data. */
if (cur_size > 0) {
R_UNLESS(UserspaceAccess::CopyMemoryToUser(buffer, GetVoidPointer(GetLinearMappedVirtualAddress(cur_addr)), cur_size), svc::ResultInvalidPointer());
const void * copy_src = GetVoidPointer(GetLinearMappedVirtualAddress(cur_addr));
cpu::FlushDataCache(copy_src, cur_size);
R_UNLESS(UserspaceAccess::CopyMemoryToUser(buffer, copy_src, cur_size), svc::ResultInvalidPointer());
}
return ResultSuccess();