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core: replace getpagesize() with qemu_real_host_page_size

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There are three page size in qemu:

  real host page size
  host page size
  target page size

All of them have dedicate variable to represent. For the last two, we
use the same form in the whole qemu project, while for the first one we
use two forms: qemu_real_host_page_size and getpagesize().

qemu_real_host_page_size is defined to be a replacement of
getpagesize(), so let it serve the role.

[Note] Not fully tested for some arch or device.

Signed-off-by: Wei Yang <richardw.yang@linux.intel.com>
Message-Id: <20191013021145.16011-3-richardw.yang@linux.intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Wei Yang 2019-10-13 10:11:45 +08:00 • committed by Paolo Bonzini
parent 5608956575
commit 038adc2f58
25 changed files with 52 additions and 50 deletions
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6
accel/kvm/kvm-all.c
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@ -52,7 +52,7 @@
/* KVM uses PAGE_SIZE in its definition of KVM_COALESCED_MMIO_MAX. We
* need to use the real host PAGE_SIZE, as that's what KVM will use.
*/
#define PAGE_SIZE getpagesize()
#define PAGE_SIZE qemu_real_host_page_size
//#define DEBUG_KVM
@ -507,7 +507,7 @@ static int kvm_get_dirty_pages_log_range(MemoryRegionSection *section,
{
ram_addr_t start = section->offset_within_region +
memory_region_get_ram_addr(section->mr);
ram_addr_t pages = int128_get64(section->size) / getpagesize();
ram_addr_t pages = int128_get64(section->size) / qemu_real_host_page_size;
cpu_physical_memory_set_dirty_lebitmap(bitmap, start, pages);
return 0;
@ -1841,7 +1841,7 @@ static int kvm_init(MachineState *ms)
* even with KVM. TARGET_PAGE_SIZE is assumed to be the minimum
* page size for the system though.
*/
assert(TARGET_PAGE_SIZE <= getpagesize());
assert(TARGET_PAGE_SIZE <= qemu_real_host_page_size);
s->sigmask_len = 8;