[tip:x86/boot] Revert "x86/boot: Disable RSDP parsing temporarily"

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Commit-ID:  8e44c7840479edacc4a03d396c8d214576c8d411
Gitweb:     https://git.kernel.org/tip/8e44c7840479edacc4a03d396c8d214576c8d411
Author:     Borislav Petkov <bp@xxxxxxx>
AuthorDate: Tue, 30 Apr 2019 20:38:34 +0200
Committer:  Borislav Petkov <bp@xxxxxxx>
CommitDate: Thu, 6 Jun 2019 20:29:06 +0200

Revert "x86/boot: Disable RSDP parsing temporarily"

TODO:

- ask dyoung and Dirk van der Merwe <dirk.vandermerwe@xxxxxxxxxxxxx> to
test again.

This reverts commit 36f0c423552dacaca152324b8e9bda42a6d88865.

Now that the required fixes are in place, reenable early RSDP parsing.

Signed-off-by: Borislav Petkov <bp@xxxxxxx>
Cc: Baoquan He <bhe@xxxxxxxxxx>
Cc: Chao Fan <fanc.fnst@xxxxxxxxxxxxxx>
Cc: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>
Cc: "H. Peter Anvin" <hpa@xxxxxxxxx>
Cc: indou.takao@xxxxxxxxxxxxxx
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Juergen Gross <jgross@xxxxxxxx>
Cc: kasong@xxxxxxxxxx
Cc: Kees Cook <keescook@xxxxxxxxxxxx>
Cc: "Kirill A. Shutemov" <kirill.shutemov@xxxxxxxxxxxxxxx>
Cc: msys.mizuma@xxxxxxxxx
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Tom Lendacky <thomas.lendacky@xxxxxxx>
Cc: x86-ml <x86@xxxxxxxxxx>
---
 arch/x86/boot/compressed/misc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/boot/compressed/misc.c b/arch/x86/boot/compressed/misc.c
index 5a237e8dbf8d..c0d6c560df69 100644
--- a/arch/x86/boot/compressed/misc.c
+++ b/arch/x86/boot/compressed/misc.c
@@ -352,7 +352,7 @@ asmlinkage __visible void *extract_kernel(void *rmode, memptr heap,
 	boot_params->hdr.loadflags &= ~KASLR_FLAG;
 
 	/* Save RSDP address for later use. */
-	/* boot_params->acpi_rsdp_addr = get_rsdp_addr(); */
+	boot_params->acpi_rsdp_addr = get_rsdp_addr();
 
 	sanitize_boot_params(boot_params);
 



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