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  1. 01 5月, 2013 5 次提交
  3. 30 4月, 2013 4 次提交
  5. 29 4月, 2013 3 次提交
  7. 25 4月, 2013 4 次提交
    • M
      pc: Kill the "use flash device for BIOS unless KVM" misfeature · 9953f882
      由 Markus Armbruster 提交于 
      Use of a flash memory device for the BIOS was added in series "[PATCH
v10 0/8] PC system flash support", commit 4732dcaf..1b89fafe, v1.1.

Flash vs. ROM is a guest-visible difference.  Thus, flash use had to
be suppressed for machine types pc-1.0 and older.  This was
accomplished by adding a dummy device "pc-sysfw" with property
"rom_only":

* Non-zero rom_only means "use ROM".  Default for pc-1.0 and older.
* Zero rom_only means "maybe use flash".  Default for newer machines.

Not only is the dummy device ugly, it was also retroactively added to
the older machine types!  Fortunately, it's not guest-visible (thus no
immediate guest ABI breakage), and has no vmstate (thus no immediate
migration breakage).  Breakage occurs only if the user unwisely
enables flash by setting rom_only to zero.  Patch review FAIL #1.

Why "maybe use flash"?  Flash didn't (and still doesn't) work with
KVM.  Therefore, rom_only=0 really means "use flash, except when KVM
is enabled, use ROM".  This is a Bad Idea, because it makes enabling/
disabling KVM guest-visible.  Patch review FAIL #2.

Aside: it also precludes migrating between KVM on and off, but that's
not possible for other reasons anyway.

Fix as follows:

1. Change the meaning of rom_only=0 to mean "use flash, no ifs, buts,
or maybes" for pc-i440fx-1.5 and pc-q35-1.5.  Don't change anything
for older machines (to remain bug-compatible).

2. Change the default value from 0 to 1 for these machines.
Necessary, because 0 doesn't work with KVM.  Once it does, we can flip
the default back to 0.

3. Don't revert the retroactive addition of device "pc-sysfw" to older
machine types.  Seems not worth the trouble.

4. Add a TODO comment asking for device "pc-sysfw" to be dropped once
flash works with KVM.

Net effect is that you get a BIOS ROM again even when KVM is disabled,
just like for machines predating the introduction of flash.

To get flash instead, use "--global pc-sysfw.rom_only=0".
Signed-off-by: NMarkus Armbruster <armbru@redhat.com>
Message-id: 1365780303-26398-4-git-send-email-armbru@redhat.com
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
      9953f882
    • M
      pc: Split pc_init_pci_1_0() off pc_init_pci_1_2() · 6fd028f6
      由 Markus Armbruster 提交于 
      Just to make the next commit easier to review.
Signed-off-by: NMarkus Armbruster <armbru@redhat.com>
Message-id: 1365780303-26398-3-git-send-email-armbru@redhat.com
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
      6fd028f6
    • M
      pc: Inline pc_init_pci_1_3() into pc_init_pci_1_2() · 36afbc51
      由 Markus Armbruster 提交于 
      Just to make the commit after next easier to review.
Signed-off-by: NMarkus Armbruster <armbru@redhat.com>
Message-id: 1365780303-26398-2-git-send-email-armbru@redhat.com
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
      36afbc51
    • H
      ich9: kill cmos_s3 · a3ac6b53
      由 Hu Tao 提交于 
      Signed-off-by: NHu Tao <hutao@cn.fujitsu.com>
Reviewed-by: NPaolo Bonzini <pbonzini@redhat.com>
Message-id: 1366799842-18550-1-git-send-email-hutao@cn.fujitsu.com
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
      a3ac6b53
  9. 16 4月, 2013 1 次提交
  11. 15 4月, 2013 1 次提交
  13. 09 4月, 2013 14 次提交
  15. 05 4月, 2013 5 次提交
  17. 28 3月, 2013 1 次提交
  19. 12 3月, 2013 2 次提交