The address_space_rw() function allows either reads or writes depending on the is_write argument passed to it; this is useful when the direction of the access is determined programmatically (as for instance when handling the KVM_EXIT_MMIO exit reason). Under the hood it just calls either address_space_write() or address_space_read_full(). We also use it a lot with a constant is_write argument, though, which has two issues: * when reading "address_space_rw(..., 1)" this is less immediately clear to the reader as being a write than "address_space_write(...)" * calling address_space_rw() bypasses the optimization in address_space_read() that fast-paths reads of a fixed length This commit was produced with the included Coccinelle script scripts/coccinelle/exec_rw_const.cocci. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> Reviewed-by: Laurent Vivier <lvivier@redhat.com> Reviewed-by: Cédric Le Goater <clg@kaod.org> Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Acked-by: David Gibson <david@gibson.dropbear.id.au> Message-Id: <20200218112457.22712-1-peter.maydell@linaro.org> [PMD: Update macvm_set_cr0() reported by Laurent Vivier] Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com> |
||
---|---|---|
.. | ||
hvf-i386.h | ||
hvf.c | ||
Makefile.objs | ||
panic.h | ||
README.md | ||
vmcs.h | ||
vmx.h | ||
x86.c | ||
x86.h | ||
x86_cpuid.c | ||
x86_decode.c | ||
x86_decode.h | ||
x86_descr.c | ||
x86_descr.h | ||
x86_emu.c | ||
x86_emu.h | ||
x86_flags.c | ||
x86_flags.h | ||
x86_mmu.c | ||
x86_mmu.h | ||
x86_task.c | ||
x86_task.h | ||
x86hvf.c | ||
x86hvf.h |
OS X Hypervisor.framework support in QEMU
These sources (and ../hvf-all.c) are adapted from Veertu Inc's vdhh (Veertu Desktop Hosted Hypervisor) (last known location: https://github.com/veertuinc/vdhh) with some minor changes, the most significant of which were:
- Adapt to our current QEMU's
CPUState
structure andaddress_space_rw
API; many struct members have been moved around (emulated x86 state, xsave_buf) due to historical differences + QEMU needing to handle more emulation targets. - Removal of
apic_page
and hyperv-related functionality. - More relaxed use of
qemu_mutex_lock_iothread
.