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From: "Luis R. Rodriguez" <mcgrof@kernel.org>
To: bp@alien8.de, hpa@zytor.com, tglx@linutronix.de,
	mingo@redhat.com, rusty@rustcorp.com.au
Cc: x86@kernel.org, linux-kernel@vger.kernel.org,
	luto@amacapital.net, boris.ostrovsky@oracle.com,
	david.vrabel@citrix.com, konrad.wilk@oracle.com,
	xen-devel@lists.xensource.com, lguest@lists.ozlabs.org,
	andriy.shevchenko@linux.intel.com, jlee@suse.com, glin@suse.com,
	matt@codeblueprint.co.uk, andrew.cooper3@citrix.com,
	"Luis R. Rodriguez" <mcgrof@kernel.org>
Subject: [PATCH v4 09/14] x86/tboot: remove paravirt_enabled()
Date: Wed,  6 Apr 2016 17:06:29 -0700	[thread overview]
Message-ID: <1459987594-5434-10-git-send-email-mcgrof@kernel.org> (raw)
In-Reply-To: <1459987594-5434-1-git-send-email-mcgrof@kernel.org>

There is already a check for boot_params.tboot_addr prior
to paravirt_enabled(). Both Xen and lguest, which are also the
only ones that set paravirt_enabled to true, never set the
boot_params.tboot_addr. The Xen folks are sure a force disable
to 0 is not needed, we recently forced disabled this on lguest.
With this in place this check is no longer needed.

Signed-off-by: Luis R. Rodriguez <mcgrof@kernel.org>
---
 arch/x86/kernel/tboot.c | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/arch/x86/kernel/tboot.c b/arch/x86/kernel/tboot.c
index e72a07f20b05..9b0185fbe3eb 100644
--- a/arch/x86/kernel/tboot.c
+++ b/arch/x86/kernel/tboot.c
@@ -74,12 +74,6 @@ void __init tboot_probe(void)
 		return;
 	}
 
-	/* only a natively booted kernel should be using TXT */
-	if (paravirt_enabled()) {
-		pr_warning("non-0 tboot_addr but pv_ops is enabled\n");
-		return;
-	}
-
 	/* Map and check for tboot UUID. */
 	set_fixmap(FIX_TBOOT_BASE, boot_params.tboot_addr);
 	tboot = (struct tboot *)fix_to_virt(FIX_TBOOT_BASE);
-- 
2.7.2

  parent reply	other threads:[~2016-04-07  0:06 UTC|newest]

Thread overview: 43+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-04-07  0:06 [PATCH v4 00/14] x86: remove paravirt_enabled Luis R. Rodriguez
2016-04-07  0:06 ` [PATCH v4 01/14] x86/boot: enumerate documentation for the x86 hardware_subarch Luis R. Rodriguez
2016-04-07 11:25   ` Andy Shevchenko
2016-04-07 22:36     ` Luis R. Rodriguez
2016-04-07  0:06 ` [PATCH v4 02/14] x86/xen: use X86_SUBARCH_XEN for PV guest boots Luis R. Rodriguez
2016-04-07  9:41   ` [Xen-devel] " David Vrabel
2016-04-07  0:06 ` [PATCH v4 03/14] tools/lguest: make lguest launcher use X86_SUBARCH_LGUEST explicitly Luis R. Rodriguez
2016-04-07  0:06 ` [PATCH v4 04/14] x86/rtc: replace paravirt rtc check with platform legacy quirk Luis R. Rodriguez
2016-04-07  9:42   ` [Xen-devel] " David Vrabel
2016-04-13 23:08     ` Luis R. Rodriguez
2016-04-07 12:55   ` Boris Ostrovsky
2016-04-08  0:32     ` Luis R. Rodriguez
2016-04-08  5:18       ` Juergen Gross
2016-04-08  6:29         ` Luis R. Rodriguez
2016-04-08  6:38           ` Juergen Gross
2016-04-08  6:56             ` Luis R. Rodriguez
2016-04-08  7:13               ` Juergen Gross
2016-04-08  7:36                 ` Luis R. Rodriguez
2016-04-08  7:59                   ` Juergen Gross
2016-04-08 12:37                     ` Boris Ostrovsky
2016-04-08 18:45                       ` Luis R. Rodriguez
2016-04-08 12:25           ` Boris Ostrovsky
2016-04-07  0:06 ` [PATCH v4 05/14] x86, ACPI: move ACPI_FADT_NO_CMOS_RTC check to ACPI boot code Luis R. Rodriguez
2016-04-07  0:06 ` [PATCH v4 06/14] x86/init: use a platform legacy quirk for ebda Luis R. Rodriguez
2016-04-07  9:44   ` [Xen-devel] " David Vrabel
2016-04-07 21:07     ` Luis R. Rodriguez
2016-04-07  0:06 ` [PATCH v4 07/14] tools/lguest: force disable tboot and apm Luis R. Rodriguez
2016-04-11  3:32   ` Rusty Russell
2016-04-07  0:06 ` [PATCH v4 08/14] apm32: remove paravirt_enabled() use Luis R. Rodriguez
2016-04-07 13:08   ` Boris Ostrovsky
2016-04-07 22:31     ` Luis R. Rodriguez
2016-04-07  0:06 ` Luis R. Rodriguez [this message]
2016-04-07  0:06 ` [PATCH v4 10/14] x86/cpu/intel: remove not needed paravirt_enabled() for f00f work around Luis R. Rodriguez
2016-04-07  0:06 ` [PATCH v4 11/14] pnpbios: replace paravirt_enabled() check with legacy device check Luis R. Rodriguez
     [not found]   ` <1459987594-5434-12-git-send-email-mcgrof-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2016-04-07  9:46     ` [Xen-devel] " David Vrabel
2016-04-07 21:42       ` Luis R. Rodriguez
2016-04-07  0:06 ` [PATCH v4 12/14] x86, ACPI: parse ACPI_FADT_LEGACY_DEVICES Luis R. Rodriguez
2016-04-07  0:06 ` [PATCH v4 13/14] x86/init: rename ebda code file Luis R. Rodriguez
2016-04-07  0:06 ` [PATCH v4 14/14] x86/paravirt: remove paravirt_enabled() Luis R. Rodriguez
2016-04-07 13:24 ` [Xen-devel] [PATCH v4 00/14] x86: remove paravirt_enabled Juergen Gross
2016-04-07 21:31 ` [PATCH v4 13/14] x86/init: rename ebda code file Luis R. Rodriguez
2016-04-08  1:14 ` [PATCH v4 00/14] x86: remove paravirt_enabled Luis R. Rodriguez
2016-04-08 10:23   ` Borislav Petkov

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