This is not needed since the RAM list is not modified anymore by
qemu_get_ram_ptr. Replace it with qemu_get_ram_block.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
phys_mem_alloc and its assigned values qemu_anon_ram_alloc and
legacy_s390_alloc must have identical argument lists.
legacy_s390_alloc uses the size parameter to call mmap, so size_t is
good enough for all of them.
This patch fixes compiler errors on i686 Linux hosts:
CC alpha-softmmu/exec.o
exec.c:752:51: error:
initialization from incompatible pointer type [-Werror]
exec.c: In function 'qemu_ram_alloc_from_ptr':
exec.c:1139:32: error:
comparison of distinct pointer types lacks a cast [-Werror]
exec.c: In function 'qemu_ram_remap':
exec.c:1283:21: error:
comparison of distinct pointer types lacks a cast [-Werror]
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Message-id: 1380481005-32399-1-git-send-email-sw@weilnetz.de
Signed-off-by: Anthony Liguori <aliguori@amazon.com>
QOM CPUState refactorings / X86CPU
* Fix for X86CPU model field of qemu32/qemu64 CPU models
* Bug fix for longjmp on FreeBSD
* Removal of unused function
* Confinement of clone syscall infrastructure to linux-user
# gpg: Signature made Wed 09 Oct 2013 03:40:51 AM PDT using RSA key ID 3E7E013F
# gpg: Can't check signature: public key not found
# By Andreas Färber (2) and others
# Via Andreas Färber
* afaerber/tags/qom-cpu-for-anthony:
cpu: Drop cpu_model_str from CPU_COMMON
cpu: Move cpu_copy() into linux-user
cputlb: Remove dead function tlb_update_dirty()
cpu-exec: Also reload CPUClass *cc after longjmp return in cpu_exec()
target-i386: Set model=6 on qemu64 & qemu32 CPU models
It is only used there and is deemed very fragile if not incorrect in its
current memcpy() form. Moving it into linux-user will allow to move
parts into target_cpu.h headers and only copy what the ABI mandates.
Signed-off-by: Andreas Färber <afaerber@suse.de>
# By Stefan Weil (8) and others
# Via Michael Tokarev
* mjt/trivial-patches:
tests/.gitignore: ignore test-throttle
exec: Fix broken build for MinGW (regression)
kvm: Fix compiler warning (clang)
tcg-sparc: Fix parenthesis warning
Makefile: Remove some more files when cleaning
target-i386: Fix segment cache dump
iov: avoid "orig_len may be used unitialized" warning
vscclient: remove unnecessary use of uninitialized variable
trace-events: Clean up with scripts/cleanup-trace-events.pl again
tci: Fix qemu-alpha on 32 bit hosts (wrong assertions)
*-user: Improve documentation for lock_user function
MAINTAINERS: Add missing entry to filelist for TCI target
translate-all: Fix formatting of dump output
*-user: Fix typo in comment (ulocking -> unlocking)
docs: Fix IO port number for CPU present bitmap.
q35: Fix typo in constant DEFUALT -> DEFAULT.
configure: Undefine _FORTIFY_SOURCE prior using it
Message-id: 1379696296-32105-1-git-send-email-mjt@msgid.tls.msk.ru
# By Alexey Kardashevskiy (3) and others
# Via Paolo Bonzini
* qemu-kvm/uq/master:
target-i386: add feature kvm_pv_unhalt
linux-headers: update to 3.12-rc1
target-i386: forward CPUID cache leaves when -cpu host is used
linux-headers: update to 3.11
kvm: fix traces to use %x instead of %d
kvmvapic: Clear also physical ROM address when entering INACTIVE state
kvmvapic: Enter inactive state on hardware reset
kvmvapic: Catch invalid ROM size
kvm irqfd: support direct msimessage to irq translation
fix steal time MSR vmsd callback to proper opaque type
kvm: warn if num cpus is greater than num recommended
cpu: Move cpu state syncs up into cpu_dump_state()
exec: always use MADV_DONTFORK
Message-id: 1379694292-1601-1-git-send-email-pbonzini@redhat.com
Commit 3435f39513 reduced the ifdeffery with
this result for MinGW:
exec.c: In function ‘qemu_ram_free’:
exec.c:1239:17: warning:
implicit declaration of function ‘munmap’ [-Wimplicit-function-declaration]
exec.c:1239:17: warning:
nested extern declaration of ‘munmap’ [-Wnested-externs]
exec.c:1239: undefined reference to `munmap'
Add some ifdeffery again to fix this.
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
MADV_DONTFORK prevents fork to fail with -ENOMEM if the default
overcommit heuristics decides there's too much anonymous virtual
memory allocated. If the KVM secondary MMU is synchronized with MMU
notifiers or not, doesn't make a difference in that regard.
Secondly it's always more efficient to avoid copying the guest
physical address space in the fork child (so we avoid to mark all the
guest memory readonly in the parent and so we skip the establishment
and teardown of lots of pagetables in the child).
In the common case we can ignore the error if MADV_DONTFORK is not
available. Leave a second invocation that errors out in the KVM path
if MMU notifiers are missing and KVM is enabled, to abort in such
case.
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Tested-By: Benoit Canet <benoit@irqsave.net>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
We abort() on memory allocation failure. abort() is appropriate for
programming errors. Maybe most memory allocation failures are
programming errors, maybe not. But guest memory allocation failure
isn't, and aborting when the user asks for more memory than we can
provide is not nice. exit(1) instead, and do it in just one place, so
the error message is consistent.
Tested-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Andreas Färber <afaerber@suse.de>
Acked-by: Laszlo Ersek <lersek@redhat.com>
Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Message-id: 1375276272-15988-8-git-send-email-armbru@redhat.com
Signed-off-by: Anthony Liguori <anthony@codemonkey.ws>
Another issue missed in commit fdec991 is -mem-path: it needs to be
rejected only for old S390 KVM, not for any S390. Not that I
personally care, but the ifdeffery in qemu_ram_alloc_from_ptr() annoys
me.
Note that this doesn't actually make -mem-path work, as the kernel
doesn't (yet?) support large pages in the host for KVM guests. Clean
it up anyway.
Thanks to Christian Borntraeger for pointing out the S390 kernel
limitations.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Laszlo Ersek <lersek@redhat.com>
Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Message-id: 1375276272-15988-7-git-send-email-armbru@redhat.com
Signed-off-by: Anthony Liguori <anthony@codemonkey.ws>
Old S390 KVM wants guest RAM mapped in a peculiar way. Commit 6b02494
implemented that.
When qemu_ram_remap() got added in commit cd19cfa, its code carefully
mimicked the allocation code: peculiar way if defined(TARGET_S390X) &&
defined(CONFIG_KVM), else normal way.
For new S390 KVM, we actually want the normal way. Commit fdec991
changed qemu_ram_alloc_from_ptr() accordingly, but forgot to update
qemu_ram_remap(). If qemu_ram_alloc_from_ptr() maps RAM the normal
way, but qemu_ram_remap() remaps it the peculiar way, remapping
changes protection and flags, which it shouldn't.
Fortunately, this can't happen, as we never remap on S390.
Replace the incorrect code with an assertion.
Thanks to Christian Borntraeger for help with assessing the bug's
(non-)impact.
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Laszlo Ersek <lersek@redhat.com>
Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Message-id: 1375276272-15988-6-git-send-email-armbru@redhat.com
Signed-off-by: Anthony Liguori <anthony@codemonkey.ws>
With -mem-path, qemu_ram_alloc_from_ptr() first tries to allocate
accordingly, but when it fails, it falls back to normal allocation.
The fall back allocation code used to be effectively identical to the
"-mem-path not given" code, until it started to diverge in commit
432d268. I believe the code still works, but clean it up anyway: drop
the special fall back allocation code, and fall back to the ordinary
"-mem-path not given" code instead.
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Laszlo Ersek <lersek@redhat.com>
Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Message-id: 1375276272-15988-3-git-send-email-armbru@redhat.com
Signed-off-by: Anthony Liguori <anthony@codemonkey.ws>
Accesses to unassigned io ports shall return -1 on read and be ignored
on write. Ensure these properties via dedicated ops, decoupling us from
the memory core's handling of unassigned accesses.
Cc: qemu-stable@nongnu.org
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The problem is introduced by commit 2332616 (exec: Support 64-bit
operations in address_space_rw, 2013-07-08). Before that commit,
memory_access_size would only return 1/2/4.
Since alignment is already handled above, reduce l to the largest
power of two that is smaller than l.
Cc: qemu-stable@nongnu.org
Reported-by: Oleksii Shevchuk <alxchk@gmail.com>
Tested-by: Oleksii Shevchuk <alxchk@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
It was introduced to loop over CPUs from target-independent code, but
since commit 182735efaf target-independent
CPUState is used.
A loop can be considered more efficient than function calls in a loop,
and CPU_FOREACH() hides implementation details just as well, so use that
instead.
Suggested-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
Commit 1a1562f5ea prepared a VMSTATE_CPU()
macro for device-style VMStateDescription registration, but missed to
adapt cpu_exec_init(), so that the "cpu_common" VMStateDescription was
still registered for AlphaCPU (fe31e73742)
and OpenRISCCPU (da69721460). Fix this.
Cc: Richard Henderson <rth@twiddle.net>
Tested-by: Jia Liu <proljc@gmail.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
Passing a CPUState pointer instead of a CPUArchState pointer eliminates
the last target dependent data type in sysemu/kvm.h.
It also simplifies the code.
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
* riku/linux-user-for-upstream: (21 commits)
linux-user: Handle compressed ISA encodings when processing MIPS exceptions
linux-user: Unlock mmap_lock when resuming guest from page_unprotect
linux-user: Reset copied CPUs in cpu_copy() always
linux-user: Fix epoll on ARM hosts
linux-user: fix segmentation fault passing with h2g(x) != x
linux-user: Fix pipe syscall return for SPARC
linux-user: Fix target_stat and target_stat64 for OpenRISC
linux-user: Avoid conditional cpu_reset()
configure: Make NPTL non-optional
linux-user: Enable NPTL for x86-64
linux-user: Add i386 TLS setter
linux-user: Clean up handling of clone() argument order
linux-user: Add missing 'break' in i386 get_thread_area syscall
linux-user: Enable NPTL for m68k
linux-user: Enable NPTL for SPARC targets
linux-user: Enable NPTL for OpenRISC
linux-user: Move includes of target-specific headers to end of qemu.h
configure: Enable threading for unicore32-linux-user
configure: Enable threading on all ppc and mips linux-user targets
configure: Don't say target_nptl="no" if there is no linux-user target
...
Conflicts:
linux-user/main.c
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
