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target-i386: introduce support for 1 GB pages 

Given the simplifications to the code in the previous patches, this
is now very simple to do.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2014-04-04 08:12:28 +02:00
parent b052e4509b
commit 77549a7809
2 changed files with 8 additions and 3 deletions
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4
target-i386/cpu.c
View File

@ -569,9 +569,7 @@ struct X86CPUDefinition {
CPUID_EXT_RDRAND */
#define TCG_EXT2_FEATURES ((TCG_FEATURES & CPUID_EXT2_AMD_ALIASES) | \
CPUID_EXT2_NX | CPUID_EXT2_MMXEXT | CPUID_EXT2_RDTSCP | \
CPUID_EXT2_3DNOW | CPUID_EXT2_3DNOWEXT)
/* missing:
CPUID_EXT2_PDPE1GB */
CPUID_EXT2_3DNOW | CPUID_EXT2_3DNOWEXT | CPUID_EXT2_PDPE1GB)
#define TCG_EXT3_FEATURES (CPUID_EXT3_LAHF_LM | CPUID_EXT3_SVM | \
CPUID_EXT3_CR8LEG | CPUID_EXT3_ABM | CPUID_EXT3_SSE4A)
#define TCG_SVM_FEATURES 0

7
target-i386/helper.c
View File

@ -605,6 +605,13 @@ int x86_cpu_handle_mmu_fault(CPUState *cs, vaddr addr,
pdpe |= PG_ACCESSED_MASK;
stl_phys_notdirty(cs->as, pdpe_addr, pdpe);
}
if (pdpe & PG_PSE_MASK) {
/* 1 GB page */
page_size = 1024 * 1024 * 1024;
pte_addr = pdpe_addr;
pte = pdpe;
goto do_check_protect;
}
} else
#endif
{