Share the TLB array with KVM. This allows us to set the initial TLB
both on initial boot and reset, is useful for debugging, and could
eventually be used to support migration.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
When running PR style KVM, we need to tell the kernel that we want
to run in PAPR mode now. This means that we need to pass some more
register information down and enable papr mode. We also need to align
the HTAB to htab_size boundary.
Using this patch, -M pseries works with kvm even on non-hv kvm
implementations, as long as the preceding kernel patches are in.
Signed-off-by: Alexander Graf <agraf@suse.de>
---
v1 -> v2:
- match on CONFIG_PSERIES
v2 -> v3:
- remove HIOR pieces from PAPR patch (ABI breakage)
We have a bunch of helper functions that don't have any stubs for them in case
we don't have CONFIG_KVM enabled. That didn't bite us so far, because gcc can
optimize them out pretty well, but we should really provide them.
Signed-off-by: Alexander Graf <agraf@suse.de>
---
v1 -> v2:
- use uint64_t for clockfreq
We need to find out the host's clock-frequency when running on KVM, so
let's export a respective function.
Signed-off-by: Alexander Graf <agraf@suse.de>
---
v1 -> v2:
- enable 64bit values
qemu_service_io was mainly an alias to qemu_notify_event,
currently used only by PPC for timer hack, so call
qemu_notify_event directly.
Signed-off-by: Frediano Ziglio <freddy77@gmail.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Those blanks violate the coding conventions, see
scripts/checkpatch.pl.
Blanks missing after colons in the changed lines were added.
This patch does not try to fix tabs, long lines and other
problems in the changed lines, therefore checkpatch.pl reports
many violations.
Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
When an exception occurs on BookE, we need to set ESR bits to expose
to the guest information on what exactly happened. Add the obvious ones.
Reported-by: Jason Wessel <jason.wessel@windriver.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
When accessing an SPE instruction despite it being not available,
throw an SPE exception instead of an APU exception. That way the
guest knows what's going on and actually uses SPE.
Reported-by: Jason Wessel <jason.wessel@windriver.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
The BookE spec specifies a number of ESR bits. Add defines for them
so we can use them later on.
Reported-by: Jason Wessel <jason.wessel@windriver.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
Parameter is_softmmu (and its evil mutant twin brother is_softmuu)
is not used in cpu_*_handle_mmu_fault() functions, remove them
and adjust callers.
Acked-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Do not allocate TCG-only resources like the translation buffer when
running over KVM or XEN. Saves a "few" bytes in the qemu address space
and is also conceptually cleaner.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Move softmmu_exec.h include directives from target-*/exec.h to
target-*/op_helper.c. Move also various other stuff only used in
op_helper.c there.
Define global env in dyngen-exec.h.
For i386, move wrappers for segment and FPU helpers from user-exec.c
to op_helper.c. Implement raise_exception_err_env() to handle dynamic
CPUState. Move the function declarations to cpu.h since they can be
used outside of op_helper.c context.
LM32, s390x, UniCore32: remove unused cpu_halted(), regs_to_env() and
env_to_regs().
ARM: make raise_exception() static.
Convert
#include "exec.h"
to
#include "cpu.h"
#include "dyngen-exec.h"
and remove now unused target-*/exec.h.
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Remove the include of setjmp.h from the cpu.h of target-alpha
and target-ppc. This is unnecessary because cpu-defs.h already
includes this header; this change brings these two targets
into line with all the rest.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
* 'ppc-next' of git://repo.or.cz/qemu/agraf:
PPC: move TLBs to their own arrays
PPC: 440: Use 440 style MMU as default, so Qemu knows the MMU type
PPC: E500: Use MAS registers instead of internal TLB representation
PPC: Only set lower 32bits with mtmsr
PPC: update openbios firmware
PPC: mpc8544ds: Add hypervisor node
PPC: calculate kernel,initrd,cmdline locations dynamically
target-ppc: Handle memory-forced I/O controller access
PPC: E500: Implement reboot controller
Move functions cpu_has_work() and cpu_pc_from_tb() from exec.h to cpu.h. This is
needed by later patches.
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Before the next patch, fix coding style of the areas affected.
Change the type of the return value from cpu_has_work() and
qemu_cpu_has_work() to bool.
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
No longer needed with accompanied kernel headers.
CC: Alexander Graf <agraf@suse.de>
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Reviewed-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Required header support is now unconditionally available.
CC: Alexander Graf <agraf@suse.de>
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Reviewed-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Until now, we've created a union over multiple different TLB types and
allocated that union. While it's a waste of memory (and cache) to allocate
TLB information for a TLB type with much information when you only need
little, it also inflicts another issue.
With the new KVM API, we can now share the TLB between KVM and qemu, but
for that to work we need to have both be in the same layout. We can't just
stretch it over to fit some internal different TLB representation.
Hence this patch moves all TLB types to their own array, allowing us to only
address and allocate exactly the boundaries required for the specific TLB
type at hand.
Signed-off-by: Alexander Graf <agraf@suse.de>
The natural format for e500 cores to do TLB manipulation with are the MAS
registers. Instead of converting them into some internal representation
and back again when the guest reads them, we can just keep the data
identical to the way the guest passed it to us.
The main advantage of this approach is that we're getting closer to being
able to share MMU data with KVM using shared memory, so that we don't need
to copy lots of MMU data back and forth all the time. For this to work
however, another patch is required that gets rid of the TLB union, as that
destroys our memory layout that needs to be identical with the kernel one.
Signed-off-by: Alexander Graf <agraf@suse.de>
As Nathan pointed out correctly, the mtmsr instruction does not modify
the high 32 bits of MSR. It also doesn't matter if SF is set or not,
the instruction always behaves the same.
This patch moves it a bit closer to the spec.
Reported-by: Nathan Whitehorn <nwhitehorn@freebsd.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
On at least the PowerPC 601, a direct-store (T=1) with bus unit ID 0x07F
is special-cased as memory-forced I/O controller access. It is supposed
to be checked immediately if T=1, bypassing all protection mechanisms
and acting cache-inhibited and global.
Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Simplified by avoiding reindentation. Added explanatory comments.
Cc: Alexander Graf <agraf@suse.de>
Signed-off-by: Andreas Färber <andreas.faerber@web.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
This patch removes all references to signal.h when qemu-common.h is included
as they become redundant.
Signed-off-by: Alexandre Raymond <cerbere@gmail.com>
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
target-ppc has been switched to softfloat only long ago, but a
few #ifdef CONFIG_SOFTFLOAT have been forgotten. Remove them.
Cc: Alexander Graf <agraf@suse.de>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
When compiling qemu with kvm support on BookE PPC machines, I get
the following error:
cc1: warnings being treated as errors
/tmp/qemu/target-ppc/kvm.c: In function 'kvm_arch_get_registers':
/tmp/qemu/target-ppc/kvm.c:188: error: unused variable 'sregs'
This is due to overly ambitious #ifdef'ery introduced in 90dc88.
Fix it by keeping code that doesn't depend on new headers alive
for the compiler, but never executed due to failing capability
checks.
CC: Scott Wood <scottwood@freescale.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
When QEMU was configured with --enable-debug-tcg,
compilation fails in spr_write_booke206_mmucsr0() and in
spr_write_booke_pid(). Similar changes are also needed
in conditional code which is normally unused.
Cc: Alexander Graf <agraf@suse.de>
Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
* 'ppc-next' of git://repo.or.cz/qemu/agraf:
Fix a bug in mtsr/mtsrin emulation on ppc64
pSeries: Clean up write-only variables
w32: Fix compilation and replace non-portable usage of ulong
tb_invalidate_page_range() was intended to be used to invalidate an
area of a TB which the guest explicitly flushes from i-cache. However,
QEMU detects writes to code areas where TBs have been generated, so
his has never been useful.
Delete the function, adjust callers.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Early ppc64 CPUs include a hack to partially simulate the ppc32 segment
registers, by translating writes to them into writes to the SLB. This is
not used by any current Linux kernel, but it is used by the openbios used
in the qemu mac99 model.
Commit 81762d6dd0, cleaning up the SLB
handling introduced a bug in this code, breaking the openbios currently in
qemu. Specifically, there was an off by one error bitshuffling the
register format used by mtsr into the format needed for the SLB load,
causing the flag bits to end up in the wrong place. This caused the
storage keys to be wrong under openbios, meaning that the translation code
incorrectly thought a legitimate access was a permission violation.
This patch fixes the bug, at the same time it fixes some build bug in the
MMU debugging code (only exposed when DEBUG_MMU is enabled).
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
ulong is undefined for w32 (and maybe other) compilations.
Replace it by uintptr_t (which also fixes compilation for w64
and is a better choice for pointer to integer conversions).
Cc: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Alexander Graf <agraf@suse.de>
* 'ppc-next' of git://repo.or.cz/qemu/agraf:
PPC: Qdev'ify e500 pci
PPC MPC7544DS: Use new TLB helper function
PPC: Implement e500 (FSL) MMU
PPC: Add another 64 bits to instruction feature mask
PPC: Add GS MSR definition
PPC: Make MPC8544DS emulation work w/o KVM
PPC: Make MPC8544DS obey -cpu switch
Fix off-by-one error in sizing pSeries hcall table
ppc64: Fix out-of-tree builds
kvm: ppc: warn user on PAGE_SIZE mismatch
kvm: ppc: detect old headers
monitor: add PPC BookE SPRs
kvm: ppc: fixes for KVM_SET_SREGS on init
ppc64: Don't try to build sPAPR RTAS on Darwin
Place pseries vty devices at addresses more similar to existing machines
Make pSeries 'model' property more closely resemble real hardware
pseries: Increase maximum CPUs to 256
Most of the code to support e500 style MMUs is already in place, but
we're missing on some of the special TLB0-TLB1 handling code and slightly
different TLB modification.
This patch adds support for the FSL style MMU.
Signed-off-by: Alexander Graf <agraf@suse.de>
To enable quick runtime detection of instruction groups to the currently
selected CPU emulation, we have a feature mask of what exactly the respective
instruction supports.
This feature mask is 64 bits long and we just successfully exceeded those 64
bits. To add more features, we need to think of something.
The easiest solution that came to my mind was to simply add another 64 bits
that we can also match on. Since the comparison is only done on start of the
qemu process to generate an internal opcode calling table, we should be fine
on any performance penalties here.
Signed-off-by: Alexander Graf <agraf@suse.de>
When compiling Qemu with older kernel headers, the PVR setting
mechanism isn't available yet. Unfortunately, back then I didn't add
a capability we could check against, so all we can do is add a configure
test to see if we support PVR setting. For BookE, we don't care yet.
This fixes compilation errors with KVM enabled on older kernel headers
(like 2.6.32).
Signed-off-by: Alexander Graf <agraf@suse.de>
Read them via KVM_GET_SREGS in kvm_arch_get_registers(),
and display them in "info registers".
Also get CR and PID from the existing KVM_GET_REGS.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
Classic/server ppc has had SREGS for a while now (though I think not
always?), but it's still missing for booke. Check the capability before
calling KVM_SET_SREGS.
Without this, booke kvm fails to boot as of commit
84b4915dd2 (kvm: Handle kvm_init_vcpu
errors).
Also, don't write random stack state into the non-PVR sregs fields --
have kvm fill it in first.
Eventually booke will have sregs and it will have its own capability to
be tested here. However, we will want a way for platform code to request
to look like the actual CPU we're running on, especially if SoC devices
are being directly assigned.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
The previous patch removed the need for parameter puc.
Is is now unused, so remove it.
Cc: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Stefan Weil <weil@mail.berlios.de>
