From: Juergen Gross <jgross@suse.com>
To: xen-devel@lists.xenproject.org, x86@kernel.org,
linux-kernel@vger.kernel.org,
virtualization@lists.linux-foundation.org
Cc: Juergen Gross <jgross@suse.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
"H. Peter Anvin" <hpa@zytor.com>,
Boris Ostrovsky <boris.ostrovsky@oracle.com>,
Stefano Stabellini <sstabellini@kernel.org>,
Andy Lutomirski <luto@kernel.org>, Deep Shah <sdeep@vmware.com>,
"VMware, Inc." <pv-drivers@vmware.com>
Subject: [PATCH 0/4] x86/xen: do some paravirt cleanup
Date: Mon, 16 Nov 2020 16:22:57 +0100 [thread overview]
Message-ID: <20201116152301.24558-1-jgross@suse.com> (raw)
Eliminate the usergs_sysret64 paravirt call completely and switch
the swapgs one to use ALTERNATIVE instead. This requires to fix the
IST based exception entries for Xen PV to use the same mechanism as
NMI and debug exception already do.
Juergen Gross (4):
x86/xen: use specific Xen pv interrupt entry for MCE
x86/xen: use specific Xen pv interrupt entry for DF
x86/pv: switch SWAPGS to ALTERNATIVE
x86/xen: drop USERGS_SYSRET64 paravirt call
arch/x86/entry/entry_64.S | 32 ++++++++++++---------------
arch/x86/include/asm/idtentry.h | 6 +++++
arch/x86/include/asm/irqflags.h | 26 +++++++---------------
arch/x86/include/asm/paravirt.h | 25 ---------------------
arch/x86/include/asm/paravirt_types.h | 10 ---------
arch/x86/kernel/asm-offsets_64.c | 3 ---
arch/x86/kernel/paravirt.c | 6 +----
arch/x86/kernel/paravirt_patch.c | 7 ------
arch/x86/xen/enlighten_pv.c | 28 ++++++++++++++++++-----
arch/x86/xen/xen-asm.S | 24 ++------------------
arch/x86/xen/xen-ops.h | 2 --
11 files changed, 53 insertions(+), 116 deletions(-)
--
2.26.2
next reply other threads:[~2020-11-16 15:23 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-16 15:22 Juergen Gross [this message]
2020-11-16 15:22 ` [PATCH 1/4] x86/xen: use specific Xen pv interrupt entry for MCE Juergen Gross
2020-11-16 15:22 ` [PATCH 2/4] x86/xen: use specific Xen pv interrupt entry for DF Juergen Gross
2020-11-16 16:12 ` Andy Lutomirski
2020-11-16 16:14 ` Jürgen Groß
2020-11-16 15:23 ` [PATCH 3/4] x86/pv: switch SWAPGS to ALTERNATIVE Juergen Gross
2020-11-16 16:17 ` Andy Lutomirski
2020-11-16 15:23 ` [PATCH 4/4] x86/xen: drop USERGS_SYSRET64 paravirt call Juergen Gross
2020-11-16 16:28 ` Andy Lutomirski
2020-11-17 8:19 ` Jürgen Groß
2020-11-16 16:30 ` Andy Lutomirski
2020-11-17 10:00 ` [PATCH 0/4] x86/xen: do some paravirt cleanup Peter Zijlstra
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