From: Sean Christopherson <sean.j.christopherson@intel.com>
To: Andy Lutomirski <luto@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
x86@kernel.org
Cc: "H. Peter Anvin" <hpa@zytor.com>,
linux-kernel@vger.kernel.org,
Andy Lutomirski <luto@amacapital.net>
Subject: [PATCH 0/2] x86/vdso: Remove remnants of the fake section table
Date: Tue, 4 Dec 2018 08:17:39 -0800 [thread overview]
Message-ID: <20181204161741.12292-1-sean.j.christopherson@intel.com> (raw)
Remove pieces of the vDSO's fake section table mechanism that were left
behind when the vDSO build process reverted to using "objdump -S" to
strip the userspace image.
One of the removed pieces is a 0x340 byte reservation (for 64-bit) in
the .rodata section. Trimming that fat drops the current image's size
to under 4k, i.e. reduces the effective size of the userspace vDSO
mapping by a full page.
Sean Christopherson (2):
x86/vdso: Remove obsolete "fake section table" reservation
x86/vdso: Remove a stale/misleading comment from the linker script
arch/x86/entry/vdso/vdso-layout.lds.S | 27 ---------------------------
arch/x86/entry/vdso/vdso2c.c | 6 ------
2 files changed, 33 deletions(-)
--
2.19.2
next reply other threads:[~2018-12-04 16:17 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-04 16:17 Sean Christopherson [this message]
2018-12-04 16:17 ` [PATCH 1/2] x86/vdso: Remove obsolete "fake section table" reservation Sean Christopherson
2018-12-04 18:22 ` Sean Christopherson
2018-12-04 18:29 ` Sean Christopherson
2018-12-04 18:58 ` Andy Lutomirski
2018-12-04 19:28 ` Sean Christopherson
2018-12-04 19:46 ` Andy Lutomirski
2018-12-04 16:17 ` [PATCH 2/2] x86/vdso: Remove a stale/misleading comment from the linker script Sean Christopherson
2018-12-04 18:59 ` Andy Lutomirski
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