[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [PATCH 01/11] x86/entry: Use swapgs and native_iret directly in swapgs_restore_regs_and_return_to_usermode

To: Lai Jiangshan <jiangshanlai@xxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx
From: Juergen Gross <jgross@xxxxxxxx>
Date: Mon, 13 Dec 2021 13:13:04 +0100
Cc: x86@xxxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxxx, Lai Jiangshan <laijs@xxxxxxxxxxxxxxxxx>, Andy Lutomirski <luto@xxxxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, Borislav Petkov <bp@xxxxxxxxx>, Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>, "H. Peter Anvin" <hpa@xxxxxxxxx>
Delivery-date: Mon, 13 Dec 2021 12:13:25 +0000
List-id: Xen developer discussion <xen-devel.lists.xenproject.org>

On 08.12.21 12:08, Lai Jiangshan wrote:

From: Lai Jiangshan <laijs@xxxxxxxxxxxxxxxxx>

swapgs_restore_regs_and_return_to_usermode() is used in native code
(non-xenpv) only now, so it doesn't need the PV-aware SWAPGS and
INTERRUPT_RETURN.

Signed-off-by: Lai Jiangshan <laijs@xxxxxxxxxxxxxxxxx>


Reviewed-by: Juergen Gross <jgross@xxxxxxxx>


Juergen

Attachment: OpenPGP_0xB0DE9DD628BF132F.asc
Description: OpenPGP public key

Attachment: OpenPGP_signature
Description: OpenPGP digital signature

References:
- [PATCH 00/11] x86/entry: Clean up entry code
  - From: Lai Jiangshan
- [PATCH 01/11] x86/entry: Use swapgs and native_iret directly in swapgs_restore_regs_and_return_to_usermode
  - From: Lai Jiangshan

Prev by Date: Re: [PATCH v2 13/18] VT-d: allow use of superpage mappings
Next by Date: [ovmf test] 167392: all pass - PUSHED
Previous by thread: [PATCH 01/11] x86/entry: Use swapgs and native_iret directly in swapgs_restore_regs_and_return_to_usermode
Next by thread: [PATCH 02/11] x86/traps: Move pt_regs only in fixup_bad_iret()
Index(es):
- Date
- Thread

Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.