- 01 3月, 2010 33 次提交
-
-
由 Julia Lawall 提交于
msr was tested above, so the second test is not needed. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @r@ expression *x; expression e; identifier l; @@ if (x == NULL || ...) { ... when forall return ...; } ... when != goto l; when != x = e when != &x *x == NULL // </smpl> Signed-off-by: NJulia Lawall <julia@diku.dk> Signed-off-by: NAvi Kivity <avi@redhat.com>
-
由 Avi Kivity 提交于
Signed-off-by: NAvi Kivity <avi@redhat.com>
-
由 Gui Jianfeng 提交于
flexpriority_enabled implies cpu_has_vmx_virtualize_apic_accesses() returning true, so we don't need this check here. Signed-off-by: NGui Jianfeng <guijianfeng@cn.fujitsu.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
-
由 Avi Kivity 提交于
Record failed msrs reads and writes, and the fact that they failed as well. Signed-off-by: NAvi Kivity <avi@redhat.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
-
由 Avi Kivity 提交于
When cr0.mp is clear, the guest doesn't expect a #NM in response to a WAIT instruction. Because we always keep cr0.mp set, it will get a #NM, and potentially be confused. Fix by keeping cr0.mp set only when the fpu is inactive, and passing it through when inactive. Reported-by: NLorenzo Martignoni <martignlo@gmail.com> Analyzed-by: NGleb Natapov <gleb@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
-
由 Avi Kivity 提交于
None of the other registers have the shadow_ prefix. Signed-off-by: NAvi Kivity <avi@redhat.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
-
由 Avi Kivity 提交于
Signed-off-by: NAvi Kivity <avi@redhat.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
-
由 Avi Kivity 提交于
Assume that if the guest executes clts, it knows what it's doing, and load the guest fpu to prevent an #NM exception. Signed-off-by: NAvi Kivity <avi@redhat.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
-
由 Jan Kiszka 提交于
As we trap all debug register accesses, we do not need to switch real DR6 at all. Clean up update_exception_bitmap at this chance, too. Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
-
由 Jan Kiszka 提交于
Make sure DR4 and DR5 are aliased to DR6 and DR7, respectively, if CR4.DE is not set. Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
-
由 Jan Kiszka 提交于
Injecting GP without an error code is a bad idea (causes unhandled guest exits). Moreover, we must not skip the instruction if we injected an exception. Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
-
由 Sheng Yang 提交于
As Avi noted: >There are two problems with the kernel failure report. First, it >doesn't report enough data - registers, surrounding instructions, etc. >that are needed to explain what is going on. Second, it can flood >dmesg, which is a pretty bad thing to do. So we remove the emulation failure report in handle_invalid_guest_state(), and would inspected the guest using userspace tool in the future. Signed-off-by: NSheng Yang <sheng@linux.intel.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
-
由 Avi Kivity 提交于
If the guest fpu is loaded, there is nothing interesing about cr0.ts; let the guest play with it as it will. This makes context switches between fpu intensive guest processes faster, as we won't trap the clts and cr0 write instructions. [marcelo: fix cr0 read shadow update on fpu deactivation; kills F8 install] Signed-off-by: NAvi Kivity <avi@redhat.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
-
由 Avi Kivity 提交于
Defer fpu deactivation as much as possible - if the guest fpu is loaded, keep it loaded until the next heavyweight exit (where we are forced to unload it). This reduces unnecessary exits. We also defer fpu activation on clts; while clts signals the intent to use the fpu, we can't be sure the guest will actually use it. Signed-off-by: NAvi Kivity <avi@redhat.com>
-
由 Avi Kivity 提交于
We will use this later to give the guest ownership of cr0.ts. Signed-off-by: NAvi Kivity <avi@redhat.com>
-
由 Avi Kivity 提交于
Since we'd like to allow the guest to own a few bits of cr0 at times, we need to know when we access those bits. Signed-off-by: NAvi Kivity <avi@redhat.com>
-
由 Avi Kivity 提交于
clts writes cr0.ts; lmsw writes cr0[0:15] - record that in ftrace. Signed-off-by: NAvi Kivity <avi@redhat.com>
-
由 Sheng Yang 提交于
Signed-off-by: NSheng Yang <sheng@linux.intel.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
-
由 Sheng Yang 提交于
Then the callback can provide the maximum supported large page level, which is more flexible. Also move the gb page support into x86_64 specific. Signed-off-by: NSheng Yang <sheng@linux.intel.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
-
由 Avi Kivity 提交于
Some exit reasons missed their strings; fill out the table. Signed-off-by: NAvi Kivity <avi@redhat.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
-
由 Marcelo Tosatti 提交于
Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
-
由 Marcelo Tosatti 提交于
Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
-
由 Marcelo Tosatti 提交于
Use two steps for memslot deletion: mark the slot invalid (which stops instantiation of new shadow pages for that slot, but allows destruction), then instantiate the new empty slot. Also simplifies kvm_handle_hva locking. Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
-
由 Marcelo Tosatti 提交于
Have a pointer to an allocated region inside struct kvm. [alex: fix ppc book 3s] Signed-off-by: NAlexander Graf <agraf@suse.de> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
-
由 Sheng Yang 提交于
Before enabling, execution of "rdtscp" in guest would result in #UD. Signed-off-by: NSheng Yang <sheng@linux.intel.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
-
由 Sheng Yang 提交于
Sometime, we need to adjust some state in order to reflect guest CPUID setting, e.g. if we don't expose rdtscp to guest, we won't want to enable it on hardware. cpuid_update() is introduced for this purpose. Also export kvm_find_cpuid_entry() for later use. Signed-off-by: NSheng Yang <sheng@linux.intel.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
-
由 Sheng Yang 提交于
It's no longer necessary. Signed-off-by: NSheng Yang <sheng@linux.intel.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
-
由 Avi Kivity 提交于
ept_update_paging_mode_cr4() accesses vcpu->arch.cr4 directly, which usually needs to be accessed via kvm_read_cr4(). In this case, we can't, since cr4 is in the process of being updated. Instead of adding inane comments, fold the function into its caller (vmx_set_cr4), so it can use the not-yet-committed cr4 directly. Signed-off-by: NAvi Kivity <avi@redhat.com>
-
由 Avi Kivity 提交于
We make no use of cr4.pge if ept is enabled, but the guest does (to flush global mappings, as with vmap()), so give the guest ownership of this bit. Signed-off-by: NAvi Kivity <avi@redhat.com>
-
由 Avi Kivity 提交于
Instead of specifying the bits which we want to trap on, specify the bits which we allow the guest to change transparently. This is safer wrt future changes to cr4. Signed-off-by: NAvi Kivity <avi@redhat.com>
-
由 Avi Kivity 提交于
Some bits of cr4 can be owned by the guest on vmx, so when we read them, we copy them to the vcpu structure. In preparation for making the set of guest-owned bits dynamic, use helpers to access these bits so we don't need to know where the bit resides. No changes to svm since all bits are host-owned there. Signed-off-by: NAvi Kivity <avi@redhat.com>
-
由 Avi Kivity 提交于
They have no place in common code. Signed-off-by: NAvi Kivity <avi@redhat.com>
-
由 Sheng Yang 提交于
We don't support these instructions, but guest can execute them even if the feature('monitor') haven't been exposed in CPUID. So we would trap and inject a #UD if guest try this way. Cc: stable@kernel.org Signed-off-by: NSheng Yang <sheng@linux.intel.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
-
- 03 12月, 2009 7 次提交
-
-
由 Avi Kivity 提交于
update_transition_efer() masks out some efer bits when deciding whether to switch the msr during guest entry; for example, NX is emulated using the mmu so we don't need to disable it, and LMA/LME are handled by the hardware. However, with shared msrs, the comparison is made against a stale value; at the time of the guest switch we may be running with another guest's efer. Fix by deferring the mask/compare to the actual point of guest entry. Noted by Marcelo. Signed-off-by: NAvi Kivity <avi@redhat.com>
-
由 Sheng Yang 提交于
Otherwise would cause VMEntry failure when using ept=0 on unrestricted guest supported processors. Signed-off-by: NSheng Yang <sheng@linux.intel.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
-
由 Jan Kiszka 提交于
This new IOCTL exports all yet user-invisible states related to exceptions, interrupts, and NMIs. Together with appropriate user space changes, this fixes sporadic problems of vmsave/restore, live migration and system reset. [avi: future-proof abi by adding a flags field] Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
-
由 Avi Kivity 提交于
These happen when we trap an exception when another exception is being delivered; we only expect these with MCEs and page faults. If something unexpected happens, things probably went south and we're better off reporting an internal error and freezing. Signed-off-by: NAvi Kivity <avi@redhat.com>
-
由 Avi Kivity 提交于
Usually userspace will freeze the guest so we can inspect it, but some internal state is not available. Add extra data to internal error reporting so we can expose it to the debugger. Extra data is specific to the suberror. Signed-off-by: NAvi Kivity <avi@redhat.com>
-
由 Avi Kivity 提交于
This variable is used to communicate between a caller and a callee; switch to a function argument instead. Signed-off-by: NAvi Kivity <avi@redhat.com>
-
由 Marcelo Tosatti 提交于
GUEST_CR3 is updated via kvm_set_cr3 whenever CR3 is modified from outside guest context. Similarly pdptrs are updated via load_pdptrs. Let kvm_set_cr3 perform the update, removing it from the vcpu_run fast path. Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com> Acked-by: NAcked-by: Sheng Yang <sheng@linux.intel.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
-