diff options
| author | Jan Kiszka <jan.kiszka@siemens.com> | 2018-06-30 08:08:23 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2018-07-02 15:41:18 +0200 |
| commit | fe441054bb3f0c75ff23335790342c0408e11c3a (patch) | |
| tree | 4c33bcd58c69d2a1dc66ba3f10d98e3108976195 /target/i386/cpu.c | |
| parent | 76b004d10da09bb77a4343edf7b98b2d662fb4f2 (diff) | |
target-i386: Add NPT support
This implements NPT suport for SVM by hooking into
x86_cpu_handle_mmu_fault where it reads the stage-1 page table. Whether
we need to perform this 2nd stage translation, and how, is decided
during vmrun and stored in hflags2, along with nested_cr3 and
nested_pg_mode.
As get_hphys performs a direct cpu_vmexit in case of NPT faults, we need
retaddr in that function. To avoid changing the signature of
cpu_handle_mmu_fault, this passes the value from tlb_fill to get_hphys
via the CPU state.
This was tested successfully via the Jailhouse hypervisor.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Message-Id: <567473a0-6005-5843-4c73-951f476085ca@web.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'target/i386/cpu.c')
| -rw-r--r-- | target/i386/cpu.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/target/i386/cpu.c b/target/i386/cpu.c index bdbd446b88..b0b87c3d81 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -749,7 +749,7 @@ static void x86_cpu_vendor_words2str(char *dst, uint32_t vendor1, #define TCG_EXT3_FEATURES (CPUID_EXT3_LAHF_LM | CPUID_EXT3_SVM | \ CPUID_EXT3_CR8LEG | CPUID_EXT3_ABM | CPUID_EXT3_SSE4A) #define TCG_EXT4_FEATURES 0 -#define TCG_SVM_FEATURES 0 +#define TCG_SVM_FEATURES CPUID_SVM_NPT #define TCG_KVM_FEATURES 0 #define TCG_7_0_EBX_FEATURES (CPUID_7_0_EBX_SMEP | CPUID_7_0_EBX_SMAP | \ CPUID_7_0_EBX_BMI1 | CPUID_7_0_EBX_BMI2 | CPUID_7_0_EBX_ADX | \ |