From: Waldemar Kozaczuk <[email protected]>
Committer: Waldemar Kozaczuk <[email protected]>
Branch: master
sysfs: support linear_maps
This patch builds on a previous one to track linear maps
and adds new OSv specific pseudo file /sys/osv/memory/linear_maps:
x86_64 example)
0x40200000 0x200000 7c7434 rwxp n kernel
0xffff800000000000 0 40000000 rwxp n main
0xffff8000000f0000 0xf0000 10000 rwxp n dmi
0xffff8000000f5a00 0xf5a00 247 rwxp n smbios
0xffff800040000000 0x40000000 3ffdd000 rwxp n main
0xffff80007fe00000 0x7fe00000 200000 rwxp n acpi
0xffff8000febd1000 0xfebd1000 1000 rwxp n pci_bar
0xffff8000febd2000 0xfebd2000 1000 rwxp n pci_bar
0xffff8000fec00000 0xfec00000 1000 rwxp n ioapic
0xffff900000000000 0 40000000 rwxp n page
0xffff900040000000 0x40000000 3ffdd000 rwxp n page
0xffffa00000000000 0 40000000 rwxp n mempool
0xffffa00040000000 0x40000000 3ffdd000 rwxp n mempool
aarch64 example)
0x8000000 0x8000000 10000 rwxp d gic_dist
0x8010000 0x8010000 10000 rwxp d gic_cpu
0x9000000 0x9000000 1000 rwxp d pl011
0x9010000 0x9010000 1000 rwxp d pl031
0x10000000 0x10000000 2eff0000 rwxp d pci_mem
0x3eff0000 0x3eff0000 10000 rwxp d pci_io
0x40000000 0x40000000 6d3000 rwxp n kernel
0x4010000000 0x4010000000 10000000 rwxp d pci_cfg
0xffff80000a000000 0xa000000 200 rwxp n virtio_mmio_cfg
0xffff80000a000200 0xa000200 200 rwxp n virtio_mmio_cfg
0xffff80000a000400 0xa000400 200 rwxp n virtio_mmio_cfg
0xffff80000a000600 0xa000600 200 rwxp n virtio_mmio_cfg
0xffff80000a000800 0xa000800 200 rwxp n virtio_mmio_cfg
0xffff80000a000a00 0xa000a00 200 rwxp n virtio_mmio_cfg
0xffff80000a000c00 0xa000c00 200 rwxp n virtio_mmio_cfg
0xffff80000a000e00 0xa000e00 200 rwxp n virtio_mmio_cfg
0xffff8000406d3000 0x406d3000 7f92d000 rwxp n main
0xffff9000406d3000 0x406d3000 7f92d000 rwxp n page
0xffffa000406d3000 0x406d3000 7f92d000 rwxp n mempool
Signed-off-by: Waldemar Kozaczuk <[email protected]>
---
diff --git a/core/mmu.cc b/core/mmu.cc
--- a/core/mmu.cc
+++ b/core/mmu.cc
@@ -1879,6 +1879,18 @@ linear_vma::linear_vma(void* virt, phys phys, size_t
size, mattr mem_attr, const
linear_vma::~linear_vma() {
}
+std::string sysfs_linear_maps() {
+ std::ostringstream os;
+ WITH_LOCK(linear_vma_set_mutex.for_read()) {
+ for(auto *vma : linear_vma_set) {
+ char mattr = vma->_mem_attr == mmu::mattr::normal ? 'n' : 'd';
+ osv::fprintf(os, "%18x %18x %12x rwxp %c %s\n",
+ vma->_virt_addr, (void*)vma->_phys_addr, vma->_size, mattr,
vma->_name.c_str());
+ }
+ }
+ return os.str();
+}
+
void linear_map(void* _virt, phys addr, size_t size, const char* name,
size_t slop, mattr mem_attr)
{
diff --git a/fs/sysfs/sysfs_vnops.cc b/fs/sysfs/sysfs_vnops.cc
--- a/fs/sysfs/sysfs_vnops.cc
+++ b/fs/sysfs/sysfs_vnops.cc
@@ -95,6 +95,7 @@ sysfs_mount(mount* mp, const char *dev, int flags, const
void* data)
auto memory = make_shared<pseudo_dir_node>(inode_count++);
memory->add("free_page_ranges", inode_count++, sysfs_free_page_ranges);
memory->add("pools", inode_count++, sysfs_memory_pools);
+ memory->add("linear_maps", inode_count++, mmu::sysfs_linear_maps);
auto osv_extension = make_shared<pseudo_dir_node>(inode_count++);
osv_extension->add("memory", memory);
diff --git a/include/osv/mmu.hh b/include/osv/mmu.hh
--- a/include/osv/mmu.hh
+++ b/include/osv/mmu.hh
@@ -330,6 +330,7 @@ error advise(void* addr, size_t size, int advice);
void vm_fault(uintptr_t addr, exception_frame* ef);
std::string procfs_maps();
+std::string sysfs_linear_maps();
unsigned long all_vmas_size();
--
You received this message because you are subscribed to the Google Groups "OSv
Development" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To view this discussion on the web visit
https://groups.google.com/d/msgid/osv-dev/0000000000001c6a6c05db7b46e8%40google.com.
