mirror of
https://gitlab.com/qemu-project/qemu
synced 2024-09-06 09:55:55 +00:00
target-i386: x86_cpu_get_phys_page_debug(): support 1GB page translation
Linux guests, when using more than 4GB of RAM, may end up using 1GB pages to store (kernel) data. When this happens, we're unable to debug a running Linux kernel with GDB: (gdb) p node_data[0]->node_id Cannot access memory at address 0xffff88013fffd3a0 (gdb) GDB returns this error because x86_cpu_get_phys_page_debug() doesn't support translating 1GB pages in IA-32e paging mode and returns an error to GDB. This commit adds support for 1GB page translation for IA32e paging. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
This commit is contained in:
parent
8648fcd52a
commit
c8c14bcb72
|
@ -941,6 +941,14 @@ hwaddr x86_cpu_get_phys_page_debug(CPUState *cs, vaddr addr)
|
|||
pdpe = ldq_phys(cs->as, pdpe_addr);
|
||||
if (!(pdpe & PG_PRESENT_MASK))
|
||||
return -1;
|
||||
|
||||
if (pdpe & PG_PSE_MASK) {
|
||||
page_size = 1024 * 1024 * 1024;
|
||||
pte = pdpe & ~( (page_size - 1) & ~0xfff);
|
||||
pte &= ~(PG_NX_MASK | PG_HI_USER_MASK);
|
||||
goto out;
|
||||
}
|
||||
|
||||
} else
|
||||
#endif
|
||||
{
|
||||
|
@ -993,6 +1001,9 @@ hwaddr x86_cpu_get_phys_page_debug(CPUState *cs, vaddr addr)
|
|||
pte = pte & env->a20_mask;
|
||||
}
|
||||
|
||||
#ifdef TARGET_X86_64
|
||||
out:
|
||||
#endif
|
||||
page_offset = (addr & TARGET_PAGE_MASK) & (page_size - 1);
|
||||
paddr = (pte & TARGET_PAGE_MASK) + page_offset;
|
||||
return paddr;
|
||||
|
|
Loading…
Reference in a new issue