Revert "memory: Drop FlatRange.romd_mode"

This reverts commit 5b5660adf1,
as it breaks the UEFI guest firmware (known as ArmVirtPkg or AAVMF)
running in the "virt" machine type of "qemu-system-aarch64":

Contrary to the commit message, (a->mr == b->mr) does *not* imply
that (a->romd_mode == b->romd_mode): the pflash device model calls
memory_region_rom_device_set_romd() -- for switching between the above
modes --, and that function changes mr->romd_mode but the current
AddressSpaceDispatch's FlatRange keeps the old value.  Therefore
region_del/region_add are not called on the KVM MemoryListener.

Reported-by: Drew Jones <drjones@redhat.com>
Tested-by: Drew Jones <drjones@redhat.com>
Analyzed-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2016-05-24 21:26:28 +02:00
parent d6550e9ed2
commit b138e654a0

View file

@ -227,6 +227,7 @@ struct FlatRange {
hwaddr offset_in_region;
AddrRange addr;
uint8_t dirty_log_mask;
bool romd_mode;
bool readonly;
};
@ -251,6 +252,7 @@ static bool flatrange_equal(FlatRange *a, FlatRange *b)
return a->mr == b->mr
&& addrrange_equal(a->addr, b->addr)
&& a->offset_in_region == b->offset_in_region
&& a->romd_mode == b->romd_mode
&& a->readonly == b->readonly;
}
@ -310,6 +312,7 @@ static bool can_merge(FlatRange *r1, FlatRange *r2)
r1->addr.size),
int128_make64(r2->offset_in_region))
&& r1->dirty_log_mask == r2->dirty_log_mask
&& r1->romd_mode == r2->romd_mode
&& r1->readonly == r2->readonly;
}
@ -663,6 +666,7 @@ static void render_memory_region(FlatView *view,
fr.mr = mr;
fr.dirty_log_mask = memory_region_get_dirty_log_mask(mr);
fr.romd_mode = mr->romd_mode;
fr.readonly = readonly;
/* Render the region itself into any gaps left by the current view. */