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* [PATCH v5 0/3] x86: make rsdp address accessible via boot params
@ 2018-10-10  6:14 Juergen Gross
  2018-10-10  6:14 ` [PATCH v5 1/3] x86/xen: fix boot loader version reported for pvh guests Juergen Gross
                   ` (3 more replies)
  0 siblings, 4 replies; 19+ messages in thread
From: Juergen Gross @ 2018-10-10  6:14 UTC (permalink / raw)
  To: linux-kernel, xen-devel, x86, linux-doc
  Cc: tglx, mingo, bp, hpa, corbet, boris.ostrovsky, Juergen Gross

In the non-EFI boot path the ACPI RSDP table is currently found via
either EBDA or by searching through low memory for the RSDP magic.
This requires the RSDP to be located in the first 1MB of physical
memory. Xen PVH guests, however, get the RSDP address via the start of
day information block.

In order to support an arbitrary RSDP address this patch series adds
the physical address of the RSDP to the boot params structure filled
by the boot loader.

Juergen Gross (3):
  x86/xen: fix boot loader version reported for pvh guests
  x86/boot: add acpi rsdp address to setup_header
  x86/acpi: take rsdp address for boot params if available

 Documentation/x86/boot.txt            | 32 +++++++++++++++++++++++++++++++-
 arch/x86/boot/header.S                |  6 +++++-
 arch/x86/include/asm/acpi.h           |  7 +++++++
 arch/x86/include/asm/x86_init.h       |  2 ++
 arch/x86/include/uapi/asm/bootparam.h |  4 ++++
 arch/x86/kernel/acpi/boot.c           |  6 ++++++
 arch/x86/kernel/head32.c              |  1 +
 arch/x86/kernel/head64.c              |  2 ++
 arch/x86/kernel/setup.c               | 17 +++++++++++++++++
 arch/x86/kernel/x86_init.c            |  3 +--
 arch/x86/xen/enlighten_pvh.c          |  2 +-
 11 files changed, 77 insertions(+), 5 deletions(-)

-- 
2.16.4


^ permalink raw reply	[flat|nested] 19+ messages in thread

end of thread, other threads:[~2018-11-19 16:49 UTC | newest]

Thread overview: 19+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2018-10-10  6:14 [PATCH v5 0/3] x86: make rsdp address accessible via boot params Juergen Gross
2018-10-10  6:14 ` [PATCH v5 1/3] x86/xen: fix boot loader version reported for pvh guests Juergen Gross
2018-10-10  6:14 ` [PATCH v5 2/3] x86/boot: add acpi rsdp address to setup_header Juergen Gross
2018-11-09 22:23   ` PLEASE REVERT URGENTLY: " H. Peter Anvin
2018-11-10  0:38     ` H. Peter Anvin
2018-11-10  6:26     ` Juergen Gross
2018-11-10  6:32       ` H. Peter Anvin
2018-11-10  7:02         ` Juergen Gross
2018-11-10  7:16           ` H. Peter Anvin
2018-11-10  9:03             ` Juergen Gross
2018-11-11 18:49               ` H. Peter Anvin
2018-11-19 16:48                 ` Konrad Rzeszutek Wilk
2018-11-10 15:22     ` Juergen Gross
2018-11-11 23:58       ` hpa
2018-10-10  6:14 ` [PATCH v5 3/3] x86/acpi: take rsdp address for boot params if available Juergen Gross
2018-10-10  6:23 ` [PATCH v5 0/3] x86: make rsdp address accessible via boot params Ingo Molnar
2018-10-10  6:39   ` Juergen Gross
2018-10-10  7:19     ` Ingo Molnar
2018-10-10  7:28       ` Juergen Gross

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