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kernel/arm/paging: assume nothing is dirty

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This is a workaround to allow early bootup to progress further.

Eventually accessed and modified page flags will need to be implemented
but for now this patch allows to proceed with bringup attempts
for the ARM port.

Change-Id: Icad415a5d484213a76a90ca79bb76463140a8bdf
Reviewed-on: https://review.haiku-os.org/c/haiku/+/6197
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Tested-by: Automation <automation@haiku-os.org>
Reviewed-by: Fredrik Holmqvist <fredrik.holmqvist@gmail.com>
This commit is contained in:
David Karoly 2023-03-12 10:11:12 +01:00 committed by Adrien Destugues
parent 174b7ef6cc
commit 772df0f646
1 changed files with 4 additions and 4 deletions
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8
src/system/kernel/arch/arm/paging/32bit/ARMVMTranslationMap32Bit.cpp
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@ -394,7 +394,7 @@ ARMVMTranslationMap32Bit::UnmapPage(VMArea* area, addr_t address,
// PageUnmapped() will unlock for us
PageUnmapped(area, (oldEntry & ARM_PTE_ADDRESS_MASK) / B_PAGE_SIZE,
true /*(oldEntry & ARM_PTE_ACCESSED) != 0*/, true /*(oldEntry & ARM_PTE_DIRTY) != 0*/,
true /*(oldEntry & ARM_PTE_ACCESSED) != 0*/, false /*(oldEntry & ARM_PTE_DIRTY) != 0*/,
updatePageQueue);
return B_OK;
@ -462,7 +462,7 @@ ARMVMTranslationMap32Bit::UnmapPages(VMArea* area, addr_t base, size_t size,
// transfer the accessed/dirty flags to the page
if (/*(oldEntry & ARM_PTE_ACCESSED) != 0*/ true) // XXX IRA
page->accessed = true;
if (/*(oldEntry & ARM_PTE_DIRTY) != 0 */ true)
if (/*(oldEntry & ARM_PTE_DIRTY) != 0 */ false)
page->modified = true;
// remove the mapping object/decrement the wired_count of the
@ -590,7 +590,7 @@ ARMVMTranslationMap32Bit::UnmapArea(VMArea* area, bool deletingAddressSpace,
InvalidatePage(address);
}
if (true /*(oldEntry & ARM_PTE_DIRTY) != 0*/)
if (false /*(oldEntry & ARM_PTE_DIRTY) != 0*/)
page->modified = true;
if (pageFullyUnmapped) {
@ -855,7 +855,7 @@ ARMVMTranslationMap32Bit::ClearAccessedAndModified(VMArea* area, addr_t address,
pinner.Unlock();
_modified = true /* (oldEntry & X86_PTE_DIRTY) != 0 */; // XXX IRA
_modified = false /* (oldEntry & X86_PTE_DIRTY) != 0 */; // XXX IRA
if (true /*(oldEntry & ARM_PTE_ACCESSED) != 0*/) {
// Note, that we only need to invalidate the address, if the