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kernel/arm: clean up x86 PAE related code

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Change-Id: I2bd1f1dc699396fee1ec03b5895e995c3aca5fef
Reviewed-on: https://review.haiku-os.org/c/haiku/+/6193
Reviewed-by: Fredrik Holmqvist <fredrik.holmqvist@gmail.com>
Tested-by: Automation <automation@haiku-os.org>
This commit is contained in:
David Karoly 2023-03-11 20:01:47 +01:00
parent f964790bcc
commit 9a9c5e9fee
1 changed files with 2 additions and 22 deletions
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24
src/system/kernel/arch/arm/arch_vm_translation_map.cpp
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@ -75,29 +75,9 @@ arch_vm_translation_map_init(kernel_args *args,
} }
#endif #endif
#if B_HAIKU_PHYSICAL_BITS == 64 //IRA: Check 64 bit code and adjust for ARM //TODO: check for LPAE / long-descriptor format
bool paeAvailable = x86_check_feature(IA32_FEATURE_PAE, FEATURE_COMMON); //for now only short-descriptor format is implemented
bool paeNeeded = false;
for (uint32 i = 0; i < args->num_physical_memory_ranges; i++) {
phys_addr_t end = args->physical_memory_range[i].start
+ args->physical_memory_range[i].size;
if (end > 0x100000000LL) {
paeNeeded = true;
break;
}
}
if (paeAvailable && paeNeeded) {
dprintf("using PAE paging\n");
gARMPagingMethod = new(&sPagingMethodBuffer) ARMPagingMethodPAE;
} else {
dprintf("using 32 bit paging (PAE not %s)\n",
paeNeeded ? "available" : "needed");
gARMPagingMethod = new(&sPagingMethodBuffer) ARMPagingMethod32Bit;
}
#else
gARMPagingMethod = new(&sPagingMethodBuffer) ARMPagingMethod32Bit; gARMPagingMethod = new(&sPagingMethodBuffer) ARMPagingMethod32Bit;
#endif
return gARMPagingMethod->Init(args, _physicalPageMapper); return gARMPagingMethod->Init(args, _physicalPageMapper);
} }