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| author | Ingo Molnar <[email protected]> | 2016-10-16 11:31:39 +0200 |
|---|---|---|
| committer | Ingo Molnar <[email protected]> | 2016-10-16 11:31:39 +0200 |
| commit | 1d33369db25eb7f37b7a8bd22d736888b4501a9c (patch) | |
| tree | 116d764339be1bca928870151decbedc53a9e1d1 /arch/mips/kvm/trap_emul.c | |
| parent | 23446cb66c073b827779e5eb3dec301623299b32 (diff) | |
| parent | 1001354ca34179f3db924eb66672442a173147dc (diff) | |
Merge tag 'v4.9-rc1' into x86/urgent, to pick up updates
Signed-off-by: Ingo Molnar <[email protected]>
Diffstat (limited to 'arch/mips/kvm/trap_emul.c')
| -rw-r--r-- | arch/mips/kvm/trap_emul.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/arch/mips/kvm/trap_emul.c b/arch/mips/kvm/trap_emul.c index 091553942bcb..3b20441f2beb 100644 --- a/arch/mips/kvm/trap_emul.c +++ b/arch/mips/kvm/trap_emul.c @@ -11,7 +11,6 @@ #include <linux/errno.h> #include <linux/err.h> -#include <linux/module.h> #include <linux/vmalloc.h> #include <linux/kvm_host.h> @@ -175,6 +174,24 @@ static int kvm_trap_emul_handle_tlb_miss(struct kvm_vcpu *vcpu, bool store) run->exit_reason = KVM_EXIT_INTERNAL_ERROR; ret = RESUME_HOST; } + } else if (KVM_GUEST_KERNEL_MODE(vcpu) + && (KSEGX(badvaddr) == CKSEG0 || KSEGX(badvaddr) == CKSEG1)) { + /* + * With EVA we may get a TLB exception instead of an address + * error when the guest performs MMIO to KSeg1 addresses. + */ + kvm_debug("Emulate %s MMIO space\n", + store ? "Store to" : "Load from"); + er = kvm_mips_emulate_inst(cause, opc, run, vcpu); + if (er == EMULATE_FAIL) { + kvm_err("Emulate %s MMIO space failed\n", + store ? "Store to" : "Load from"); + run->exit_reason = KVM_EXIT_INTERNAL_ERROR; + ret = RESUME_HOST; + } else { + run->exit_reason = KVM_EXIT_MMIO; + ret = RESUME_HOST; + } } else { kvm_err("Illegal TLB %s fault address , cause %#x, PC: %p, BadVaddr: %#lx\n", store ? "ST" : "LD", cause, opc, badvaddr); |