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kvm-all: Align to qemu_real_host_page_size in kvm_set_phys_mem 

As the comment in kvm_set_phys_mem() says, KVM works in page size chunks.
However it uses hardcoded TARGET_PAGE_SIZE which is 4K on most platforms
while actual host may use different page size, for example, PPC64 hosts
use 64K system pages.

This replaces static TARGET_PAGE_SIZE with run-time calculated
qemu_real_host_page_size.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Message-Id: <1444102257-17405-1-git-send-email-aik@ozlabs.ru>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Alexey Kardashevskiy 2015-10-06 14:30:57 +11:00 committed by Paolo Bonzini
parent 88401cbc5b
commit b232c7857a
1 changed files with 4 additions and 4 deletions
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8
kvm-all.c
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@ -642,15 +642,15 @@ static void kvm_set_phys_mem(KVMMemoryListener *kml,
/* kvm works in page size chunks, but the function may be called
with sub-page size and unaligned start address. Pad the start
address to next and truncate size to previous page boundary. */
delta = (TARGET_PAGE_SIZE - (start_addr & ~TARGET_PAGE_MASK));
delta &= ~TARGET_PAGE_MASK;
delta = qemu_real_host_page_size - (start_addr & ~qemu_real_host_page_mask);
delta &= ~qemu_real_host_page_mask;
if (delta > size) {
return;
}
start_addr += delta;
size -= delta;
size &= TARGET_PAGE_MASK;
if (!size || (start_addr & ~TARGET_PAGE_MASK)) {
size &= qemu_real_host_page_mask;
if (!size || (start_addr & ~qemu_real_host_page_mask)) {
return;
}