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Borislav Petkov 2495decce7 x86/boot: Pull up cmdline preparation and early param parsing

commit 8d48bf8206f77aa8687f0e241e901e5197e52423 upstream.

Dan reports that Anjaneya Chagam can no longer use the efi=nosoftreserve
kernel command line parameter to suppress "soft reservation" behavior.

This is due to the fact that the following call-chain happens at boot:

early_reserve_memory
|-> efi_memblock_x86_reserve_range
    |-> efi_fake_memmap_early

which does

        if (!efi_soft_reserve_enabled())
                return;

and that would have set EFI_MEM_NO_SOFT_RESERVE after having parsed
"nosoftreserve".

However, parse_early_param() gets called *after* it, leading to the boot
cmdline not being taken into account.

Therefore, carve out the command line preparation into a separate
function which does the early param parsing too. So that it all goes
together.

And then call that function before early_reserve_memory() so that the
params would have been parsed by then.

Fixes: 8aa83e6395ce ("x86/setup: Call early_reserve_memory() earlier")
Reported-by: Dan Williams <dan.j.williams@intel.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Tested-by: Anjaneya Chagam <anjaneya.chagam@intel.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/e8dd8993c38702ee6dd73b3c11f158617e665607.camel@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2021-11-25 09:48:43 +01:00

alpha

alpha: enable GENERIC_PCI_IOMAP unconditionally

2021-09-19 10:37:00 -07:00

arc

ARC: fix potential build snafu

2021-10-15 18:06:32 -07:00

arm

kmap_local: don't assume kmap PTEs are linear arrays in memory

2021-11-25 09:48:43 +01:00

arm64

KVM: arm64: Fix host stage-2 finalization