kernel/linux.git/arch/powerpc/kvm/trace.h, branch linux-4.4.y

KVM: PPC: Move and undef TRACE_INCLUDE_PATH/FILE

2018-12-01T08:46:34+00:00

[ Upstream commit 28c5bcf74fa07c25d5bd118d1271920f51ce2a98 ] TRACE_INCLUDE_PATH and TRACE_INCLUDE_FILE are used by , so like that #include, they should be outside #ifdef protection. They also need to be #undefed before defining, in case multiple trace headers are included by the same C file. This became the case on book3e after commit cf4a6085151a ("powerpc/mm: Add missing tracepoint for tlbie"), leading to the following build error: CC arch/powerpc/kvm/powerpc.o In file included from arch/powerpc/kvm/powerpc.c:51:0: arch/powerpc/kvm/trace.h:9:0: error: "TRACE_INCLUDE_PATH" redefined [-Werror] #define TRACE_INCLUDE_PATH . ^ In file included from arch/powerpc/kvm/../mm/mmu_decl.h:25:0, from arch/powerpc/kvm/powerpc.c:48: ./arch/powerpc/include/asm/trace.h:224:0: note: this is the location of the previous definition #define TRACE_INCLUDE_PATH asm ^ cc1: all warnings being treated as errors Reported-by: Christian Zigotzky Signed-off-by: Scott Wood Signed-off-by: Michael Ellerman Signed-off-by: Sasha Levin

kvm: powerpc: booke: Move booke related tracepoints to separate header

2013-10-17T13:37:16+00:00

Signed-off-by: Aneesh Kumar K.V Signed-off-by: Alexander Graf

kvm: powerpc: book3s: pr: move PR related tracepoints to a separate header

2013-10-17T13:36:22+00:00

This patch moves PR related tracepoints to a separate header. This enables in converting PR to a kernel module which will be done in later patches Signed-off-by: Aneesh Kumar K.V Signed-off-by: Alexander Graf

kvm: powerpc: book3s: pr: Rename KVM_BOOK3S_PR to KVM_BOOK3S_PR_POSSIBLE

2013-10-17T13:17:49+00:00

With later patches supporting PR kvm as a kernel module, the changes that has to be built into the main kernel binary to enable PR KVM module is now selected via KVM_BOOK3S_PR_POSSIBLE Signed-off-by: Aneesh Kumar K.V Signed-off-by: Alexander Graf

KVM: PPC: Book3S PR: Keep volatile reg values in vcpu rather than shadow_vcpu

2013-10-17T12:45:03+00:00

Currently PR-style KVM keeps the volatile guest register values (R0 - R13, CR, LR, CTR, XER, PC) in a shadow_vcpu struct rather than the main kvm_vcpu struct. For 64-bit, the shadow_vcpu exists in two places, a kmalloc'd struct and in the PACA, and it gets copied back and forth in kvmppc_core_vcpu_load/put(), because the real-mode code can't rely on being able to access the kmalloc'd struct. This changes the code to copy the volatile values into the shadow_vcpu as one of the last things done before entering the guest. Similarly the values are copied back out of the shadow_vcpu to the kvm_vcpu immediately after exiting the guest. We arrange for interrupts to be still disabled at this point so that we can't get preempted on 64-bit and end up copying values from the wrong PACA. This means that the accessor functions in kvm_book3s.h for these registers are greatly simplified, and are same between PR and HV KVM. In places where accesses to shadow_vcpu fields are now replaced by accesses to the kvm_vcpu, we can also remove the svcpu_get/put pairs. Finally, on 64-bit, we don't need the kmalloc'd struct at all any more. With this, the time to read the PVR one million times in a loop went from 567.7ms to 575.5ms (averages of 6 values), an increase of about 1.4% for this worse-case test for guest entries and exits. The standard deviation of the measurements is about 11ms, so the difference is only marginally significant statistically. Signed-off-by: Paul Mackerras Signed-off-by: Alexander Graf

Merge remote-tracking branch 'master' into queue

2012-10-29T21:15:32+00:00

Merge reason: development work has dependency on kvm patches merged upstream. Conflicts: arch/powerpc/include/asm/Kbuild arch/powerpc/include/asm/kvm_para.h Signed-off-by: Marcelo Tosatti

KVM: PPC: Use symbols for exit trace

2012-10-05T21:38:48+00:00

Exit traces are a lot easier to read when you don't have to remember cryptic numbers for guest exit reasons. Symbolify them in our trace output. Signed-off-by: Alexander Graf

KVM: PPC: BookE: Add some more trace points

2012-10-05T21:38:42+00:00

Without trace points, debugging what exactly is going on inside guest code can be very tricky. Add a few more trace points at places that hopefully tell us more when things go wrong. Signed-off-by: Alexander Graf

KVM: PPC: PR: Use generic tracepoint for guest exit

2012-10-05T21:38:39+00:00

We want to have tracing information on guest exits for booke as well as book3s. Since most information is identical, use a common trace point. Signed-off-by: Alexander Graf

powerpc/mm: Convert virtual address to vpn

2012-09-17T06:31:49+00:00

This patch convert different functions to take virtual page number instead of virtual address. Virtual page number is virtual address shifted right by VPN_SHIFT (12) bits. This enable us to have an address range of upto 76 bits. Reviewed-by: Paul Mackerras Signed-off-by: Aneesh Kumar K.V Signed-off-by: Benjamin Herrenschmidt