linux-kernel - Re: [PATCH 2/2] x86/mm/64: free the gap between BSS_MAIN and BSS

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Message-ID: <14a0c042-9cfd-4b38-8284-5cff83e9f46f@intel.com>
Date: Thu, 10 Jul 2025 06:15:37 -0700
From: Dave Hansen <dave.hansen@...el.com>
To: Hamza Mahfooz <hamzamahfooz@...ux.microsoft.com>,
 linux-kernel@...r.kernel.org
Cc: Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>,
 Borislav Petkov <bp@...en8.de>, Dave Hansen <dave.hansen@...ux.intel.com>,
 "H. Peter Anvin" <hpa@...or.com>, Andy Lutomirski <luto@...nel.org>,
 Peter Zijlstra <peterz@...radead.org>, David Woodhouse <dwmw@...zon.co.uk>,
 Guenter Roeck <linux@...ck-us.net>, Jared White <jaredwhite@...rosoft.com>
Subject: Re: [PATCH 2/2] x86/mm/64: free the gap between BSS_MAIN and
 BSS_DECRYPTED

On 7/9/25 13:16, Hamza Mahfooz wrote:
> This region is unused after mark_rodata_ro() and takes up, up to 2 MiB
> of memory. So, free it in mark_rodata_ro().

I assume this was basically just something that got missed when SME/SEV
support showed up. Or was it older than that somehow?