Merge remote-tracking branch 'qemu-kvm/fix-vhost-after-memory-listener' into staging
* qemu-kvm/fix-vhost-after-memory-listener: vhost: improve region filtering vhost: fix mem_sections memory corruption vhost: fix incorrect userspace address
This commit is contained in:
commit
cd9244e48a
23
hw/vhost.c
23
hw/vhost.c
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@ -15,6 +15,7 @@
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#include "hw/hw.h"
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#include "hw/hw.h"
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#include "range.h"
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#include "range.h"
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#include <linux/vhost.h>
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#include <linux/vhost.h>
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#include "exec-memory.h"
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static void vhost_dev_sync_region(struct vhost_dev *dev,
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static void vhost_dev_sync_region(struct vhost_dev *dev,
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MemoryRegionSection *section,
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MemoryRegionSection *section,
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@ -365,10 +366,6 @@ static void vhost_set_memory(MemoryListener *listener,
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int r;
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int r;
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void *ram;
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void *ram;
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if (!memory_region_is_ram(section->mr)) {
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return;
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}
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dev->mem = g_realloc(dev->mem, s);
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dev->mem = g_realloc(dev->mem, s);
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if (log_dirty) {
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if (log_dirty) {
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@ -378,7 +375,7 @@ static void vhost_set_memory(MemoryListener *listener,
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assert(size);
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assert(size);
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/* Optimize no-change case. At least cirrus_vga does this a lot at this time. */
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/* Optimize no-change case. At least cirrus_vga does this a lot at this time. */
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ram = memory_region_get_ram_ptr(section->mr);
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ram = memory_region_get_ram_ptr(section->mr) + section->offset_within_region;
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if (add) {
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if (add) {
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if (!vhost_dev_cmp_memory(dev, start_addr, size, (uintptr_t)ram)) {
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if (!vhost_dev_cmp_memory(dev, start_addr, size, (uintptr_t)ram)) {
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/* Region exists with same address. Nothing to do. */
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/* Region exists with same address. Nothing to do. */
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@ -430,12 +427,22 @@ static void vhost_set_memory(MemoryListener *listener,
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}
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}
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}
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}
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static bool vhost_section(MemoryRegionSection *section)
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{
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return section->address_space == get_system_memory()
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&& memory_region_is_ram(section->mr);
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}
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static void vhost_region_add(MemoryListener *listener,
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static void vhost_region_add(MemoryListener *listener,
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MemoryRegionSection *section)
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MemoryRegionSection *section)
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{
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{
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struct vhost_dev *dev = container_of(listener, struct vhost_dev,
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struct vhost_dev *dev = container_of(listener, struct vhost_dev,
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memory_listener);
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memory_listener);
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if (!vhost_section(section)) {
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return;
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}
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++dev->n_mem_sections;
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++dev->n_mem_sections;
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dev->mem_sections = g_renew(MemoryRegionSection, dev->mem_sections,
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dev->mem_sections = g_renew(MemoryRegionSection, dev->mem_sections,
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dev->n_mem_sections);
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dev->n_mem_sections);
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@ -450,13 +457,17 @@ static void vhost_region_del(MemoryListener *listener,
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memory_listener);
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memory_listener);
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int i;
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int i;
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if (!vhost_section(section)) {
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return;
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}
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vhost_set_memory(listener, section, false);
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vhost_set_memory(listener, section, false);
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for (i = 0; i < dev->n_mem_sections; ++i) {
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for (i = 0; i < dev->n_mem_sections; ++i) {
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if (dev->mem_sections[i].offset_within_address_space
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if (dev->mem_sections[i].offset_within_address_space
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== section->offset_within_address_space) {
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== section->offset_within_address_space) {
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--dev->n_mem_sections;
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--dev->n_mem_sections;
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memmove(&dev->mem_sections[i], &dev->mem_sections[i+1],
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memmove(&dev->mem_sections[i], &dev->mem_sections[i+1],
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dev->n_mem_sections - i);
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(dev->n_mem_sections - i) * sizeof(*dev->mem_sections));
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break;
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break;
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}
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}
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}
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}
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