From 67a6af7ad1d161dbc9c139e868d5549e632923f7 Mon Sep 17 00:00:00 2001 From: Arvind Sankar Date: Sun, 2 Feb 2020 12:13:47 -0500 Subject: x86/boot: Remove KEEP_SEGMENTS support Commit a24e785111a3 ("i386: paravirt boot sequence") added this flag for use by paravirtualized environments such as Xen. However, Xen never made use of this flag [1], and it was only ever used by lguest [2]. Commit ecda85e70277 ("x86/lguest: Remove lguest support") removed lguest, so KEEP_SEGMENTS has lost its last user. [1] https://lore.kernel.org/lkml/4D4B097C.5050405@goop.org [2] https://www.mail-archive.com/lguest@lists.ozlabs.org/msg00469.html Signed-off-by: Arvind Sankar Link: https://lore.kernel.org/r/20200202171353.3736319-2-nivedita@alum.mit.edu Signed-off-by: Ard Biesheuvel --- Documentation/x86/boot.rst | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) (limited to 'Documentation/x86') diff --git a/Documentation/x86/boot.rst b/Documentation/x86/boot.rst index c9c201596c3e..fa7ddc0428c8 100644 --- a/Documentation/x86/boot.rst +++ b/Documentation/x86/boot.rst @@ -490,15 +490,11 @@ Protocol: 2.00+ kernel) to not write early messages that require accessing the display hardware directly. - Bit 6 (write): KEEP_SEGMENTS + Bit 6 (obsolete): KEEP_SEGMENTS Protocol: 2.07+ - - If 0, reload the segment registers in the 32bit entry point. - - If 1, do not reload the segment registers in the 32bit entry point. - - Assume that %cs %ds %ss %es are all set to flat segments with - a base of 0 (or the equivalent for their environment). + - This flag is obsolete. Bit 7 (write): CAN_USE_HEAP -- cgit v1.2.3