[v1] x86: don't use a memory page for mapping the shared info page

[MINI-OS PATCH 0/2] x86: don't use a memory page for mapping the shared info page

Juergen Gross posted 2 patches 3 months, 3 weeks ago

Diff against v2
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arch/x86/mm.c     | 23 +++++++++++++++--------
arch/x86/setup.c  | 15 ++++++++-------
arch/x86/x86_32.S |  7 +------
arch/x86/x86_64.S |  7 +------
hypervisor.c      | 15 +++++++++++----
5 files changed, 36 insertions(+), 31 deletions(-)

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[MINI-OS PATCH 0/2] x86: don't use a memory page for mapping the shared info page

Posted by Juergen Gross 3 months, 3 weeks ago

This is a small add-on series after the live-update series sent a week
ago.

I realized that having the shared info page in the normal RAM area is
a bad idea when considering kexec, as the new kernel might want it at
a different location.

So this series is moving the shared info page away from the RAM areas,
resulting in a net win of one memory page.

Juergen Gross (2):
  mm: provide a way to do very early page table allocations
  x86: don't use a memory page for mapping the shared info page

 arch/x86/mm.c     | 23 +++++++++++++++--------
 arch/x86/setup.c  | 15 ++++++++-------
 arch/x86/x86_32.S |  7 +------
 arch/x86/x86_64.S |  7 +------
 hypervisor.c      | 15 +++++++++++----
 5 files changed, 36 insertions(+), 31 deletions(-)

-- 
2.43.0