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Tue, 28 Apr 2026 03:47:29 -0700 (PDT) Received: from gourry-fedora-PF4VCD3F ([185.194.184.52]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-4463fa89140sm5346060f8f.27.2026.04.28.03.47.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 28 Apr 2026 03:47:29 -0700 (PDT) Date: Tue, 28 Apr 2026 11:47:26 +0100 From: Gregory Price To: Ard Biesheuvel Cc: linux-kernel@vger.kernel.org, linux-efi@vger.kernel.org, x86@kernel.org, Ard Biesheuvel , "Mike Rapoport (Microsoft)" , Benjamin Herrenschmidt , Dave Young Subject: Re: [PATCH v3 03/17] x86/efi: Only merge EFI memory map entries on 32-bit systems Message-ID: References: <20260423152024.1098465-19-ardb+git@google.com> <20260423152024.1098465-22-ardb+git@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260423152024.1098465-22-ardb+git@google.com> On Thu, Apr 23, 2026 at 05:20:28PM +0200, Ard Biesheuvel wrote: > From: Ard Biesheuvel > ... snip ... > > This means that merging regions is no longer needed on 64-bit, given > that the relative placement of adjacent regions is guaranteed to be > preserved in the virtual space. So make this hack 32-bit only. > > Signed-off-by: Ard Biesheuvel Will try to set some time aside to test this, but this may actually resolve some numa/efi quirks i've observed in some KVM/QEMU configs when trying out different memory layouts - so thank you for this. In the meantime, diff seems reasonable as-is, will try to come by with a test tag. Reviewed-by: Gregory Price ~Gregory