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hw/xen/hvm: Get target page size at runtime 

In order to build this file once for all targets, replace:

  TARGET_PAGE_BITS -> qemu_target_page_bits()
  TARGET_PAGE_SIZE -> qemu_target_page_size()
  TARGET_PAGE_MASK -> -qemu_target_page_size()

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Message-Id: <20231114163123.74888-4-philmd@linaro.org>
This commit is contained in:
Philippe Mathieu-Daudé 2023-11-14 15:58:23 +01:00
parent 8ebb8682f6
commit 825f292d34
1 changed files with 39 additions and 23 deletions
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62
hw/i386/xen/xen-hvm.c
View File

@ -23,6 +23,7 @@
#include "hw/xen/xen-hvm-common.h"
#include "hw/xen/arch_hvm.h"
#include <xen/hvm/e820.h>
#include "exec/target_page.h"
static MemoryRegion ram_640k, ram_lo, ram_hi;
static MemoryRegion *framebuffer;
@ -247,6 +248,9 @@ static int xen_add_to_physmap(XenIOState *state,
MemoryRegion *mr,
hwaddr offset_within_region)
{
unsigned target_page_bits = qemu_target_page_bits();
int page_size = qemu_target_page_size();
int page_mask = -page_size;
unsigned long nr_pages;
int rc = 0;
XenPhysmap *physmap = NULL;
@ -254,7 +258,7 @@ static int xen_add_to_physmap(XenIOState *state,
hwaddr phys_offset = memory_region_get_ram_addr(mr);
const char *mr_name;
if (get_physmapping(start_addr, size, TARGET_PAGE_MASK)) {
if (get_physmapping(start_addr, size, page_mask)) {
return 0;
}
if (size <= 0) {
@ -294,9 +298,9 @@ go_physmap:
return 0;
}
pfn = phys_offset >> TARGET_PAGE_BITS;
start_gpfn = start_addr >> TARGET_PAGE_BITS;
nr_pages = size >> TARGET_PAGE_BITS;
pfn = phys_offset >> target_page_bits;
start_gpfn = start_addr >> target_page_bits;
nr_pages = size >> target_page_bits;
rc = xendevicemodel_relocate_memory(xen_dmod, xen_domid, nr_pages, pfn,
start_gpfn);
if (rc) {
@ -310,8 +314,8 @@ go_physmap:
}
rc = xendevicemodel_pin_memory_cacheattr(xen_dmod, xen_domid,
start_addr >> TARGET_PAGE_BITS,
(start_addr + size - 1) >> TARGET_PAGE_BITS,
start_addr >> target_page_bits,
(start_addr + size - 1) >> target_page_bits,
XEN_DOMCTL_MEM_CACHEATTR_WB);
if (rc) {
error_report("pin_memory_cacheattr failed: %s", strerror(errno));
@ -323,11 +327,14 @@ static int xen_remove_from_physmap(XenIOState *state,
hwaddr start_addr,
ram_addr_t size)
{
unsigned target_page_bits = qemu_target_page_bits();
int page_size = qemu_target_page_size();
int page_mask = -page_size;
int rc = 0;
XenPhysmap *physmap = NULL;
hwaddr phys_offset = 0;
physmap = get_physmapping(start_addr, size, TARGET_PAGE_MASK);
physmap = get_physmapping(start_addr, size, page_mask);
if (physmap == NULL) {
return -1;
}
@ -338,9 +345,9 @@ static int xen_remove_from_physmap(XenIOState *state,
DPRINTF("unmapping vram to %"HWADDR_PRIx" - %"HWADDR_PRIx", at "
"%"HWADDR_PRIx"\n", start_addr, start_addr + size, phys_offset);
size >>= TARGET_PAGE_BITS;
start_addr >>= TARGET_PAGE_BITS;
phys_offset >>= TARGET_PAGE_BITS;
size >>= target_page_bits;
start_addr >>= target_page_bits;
phys_offset >>= target_page_bits;
rc = xendevicemodel_relocate_memory(xen_dmod, xen_domid, size, start_addr,
phys_offset);
if (rc) {
@ -369,13 +376,16 @@ static void xen_sync_dirty_bitmap(XenIOState *state,
hwaddr start_addr,
ram_addr_t size)
{
hwaddr npages = size >> TARGET_PAGE_BITS;
unsigned target_page_bits = qemu_target_page_bits();
int page_size = qemu_target_page_size();
int page_mask = -page_size;
hwaddr npages = size >> target_page_bits;
const int width = sizeof(unsigned long) * 8;
size_t bitmap_size = DIV_ROUND_UP(npages, width);
int rc, i, j;
const XenPhysmap *physmap = NULL;
physmap = get_physmapping(start_addr, size, TARGET_PAGE_MASK);
physmap = get_physmapping(start_addr, size, page_mask);
if (physmap == NULL) {
/* not handled */
return;
@ -389,7 +399,7 @@ static void xen_sync_dirty_bitmap(XenIOState *state,
return;
}
rc = xen_track_dirty_vram(xen_domid, start_addr >> TARGET_PAGE_BITS,
rc = xen_track_dirty_vram(xen_domid, start_addr >> target_page_bits,
npages, dirty_bitmap);
if (rc < 0) {
#ifndef ENODATA
@ -410,8 +420,7 @@ static void xen_sync_dirty_bitmap(XenIOState *state,
j = ctzl(map);
map &= ~(1ul << j);
memory_region_set_dirty(framebuffer,
(i * width + j) * TARGET_PAGE_SIZE,
TARGET_PAGE_SIZE);
(i * width + j) * page_size, page_size);
};
}
}
@ -631,17 +640,21 @@ void xen_register_framebuffer(MemoryRegion *mr)
void xen_hvm_modified_memory(ram_addr_t start, ram_addr_t length)
{
unsigned target_page_bits = qemu_target_page_bits();
int page_size = qemu_target_page_size();
int page_mask = -page_size;
if (unlikely(xen_in_migration)) {
int rc;
ram_addr_t start_pfn, nb_pages;
start = xen_phys_offset_to_gaddr(start, length, TARGET_PAGE_MASK);
start = xen_phys_offset_to_gaddr(start, length, page_mask);
if (length == 0) {
length = TARGET_PAGE_SIZE;
length = page_size;
}
start_pfn = start >> TARGET_PAGE_BITS;
nb_pages = ((start + length + TARGET_PAGE_SIZE - 1) >> TARGET_PAGE_BITS)
start_pfn = start >> target_page_bits;
nb_pages = ((start + length + page_size - 1) >> target_page_bits)
- start_pfn;
rc = xen_modified_memory(xen_domid, start_pfn, nb_pages);
if (rc) {
@ -664,6 +677,9 @@ void qmp_xen_set_global_dirty_log(bool enable, Error **errp)
void arch_xen_set_memory(XenIOState *state, MemoryRegionSection *section,
bool add)
{
unsigned target_page_bits = qemu_target_page_bits();
int page_size = qemu_target_page_size();
int page_mask = -page_size;
hwaddr start_addr = section->offset_within_address_space;
ram_addr_t size = int128_get64(section->size);
bool log_dirty = memory_region_is_logging(section->mr, DIRTY_MEMORY_VGA);
@ -679,8 +695,8 @@ void arch_xen_set_memory(XenIOState *state, MemoryRegionSection *section,
trace_xen_client_set_memory(start_addr, size, log_dirty);
start_addr &= TARGET_PAGE_MASK;
size = ROUND_UP(size, TARGET_PAGE_SIZE);
start_addr &= page_mask;
size = ROUND_UP(size, page_size);
if (add) {
if (!memory_region_is_rom(section->mr)) {
@ -689,8 +705,8 @@ void arch_xen_set_memory(XenIOState *state, MemoryRegionSection *section,
} else {
mem_type = HVMMEM_ram_ro;
if (xen_set_mem_type(xen_domid, mem_type,
start_addr >> TARGET_PAGE_BITS,
size >> TARGET_PAGE_BITS)) {
start_addr >> target_page_bits,
size >> target_page_bits)) {
DPRINTF("xen_set_mem_type error, addr: "HWADDR_FMT_plx"\n",
start_addr);
}