From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E94B61993A9; Thu, 6 Jun 2024 14:13:49 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717683230; cv=none; b=jl8olb/N3cy91JY6BtxQtlGYh6TDHFzB3L/SHNzNSHXDhascEg7NSAgeHqK6reL2EngHVWNl2vN9zGDfHJ6YU7+UeqvQ1uIpQiwE7FmSKcYbH4OrSZNlSGIyK7KbOX5E8DK52xJb32/4NUe5Sw1Fw7m9oYM3UQs47SYS7Io4294= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717683230; c=relaxed/simple; bh=PYdCiIZvqayt4088Y8cTgnbtKrUZ1g/wEE2AyfI6g5k=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=HobrOFREQUDxn/vtsWmCPsqylzAeET7GIrHXo9oI/aWK3llfMdyF8mYnYEUqY24ebP2o+b3vGUdSQw0TUl5AlKWn+Kk+U2LG8adMfVOHnyQmoy0PDV8FJMNXagAq1ck7bTZBgUmUkYlScMEEW4wIRslTsOXXAn1v2EQuKF23f/g= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=h9wVESmb; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="h9wVESmb" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C7E88C2BD10; Thu, 6 Jun 2024 14:13:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1717683229; bh=PYdCiIZvqayt4088Y8cTgnbtKrUZ1g/wEE2AyfI6g5k=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=h9wVESmbQbihh2MgPM/sYrgr7AnMdcwtPwlACHZRngqGubkMYKdpMRw6FE3CMTYV7 dE7vjlZjkUTH+CY0ye79/E6qNFxEiwJ/wz3pmQHNeD3VC3jIrWkV6Ym6zmXGRbeCrF VlqOLygZ8PhnOiN+oYTswUhWukvyNF/+G7OUINgE= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Juergen Gross , Ingo Molnar , Sasha Levin Subject: [PATCH 6.6 171/744] x86/pat: Restructure _lookup_address_cpa() Date: Thu, 6 Jun 2024 15:57:23 +0200 Message-ID: <20240606131737.906525945@linuxfoundation.org> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20240606131732.440653204@linuxfoundation.org> References: <20240606131732.440653204@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Juergen Gross [ Upstream commit 02eac06b820c3eae73e5736ae62f986d37fed991 ] Modify _lookup_address_cpa() to no longer use lookup_address(), but only lookup_address_in_pgd(). This is done in preparation of using lookup_address_in_pgd_attr(). No functional change intended. Signed-off-by: Juergen Gross Signed-off-by: Ingo Molnar Link: https://lore.kernel.org/r/20240412151258.9171-4-jgross@suse.com Stable-dep-of: 5bc8b0f5dac0 ("x86/pat: Fix W^X violation false-positives when running as Xen PV guest") Signed-off-by: Sasha Levin --- arch/x86/mm/pat/set_memory.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) diff --git a/arch/x86/mm/pat/set_memory.c b/arch/x86/mm/pat/set_memory.c index 1132d222ade82..a2dd773b1cd29 100644 --- a/arch/x86/mm/pat/set_memory.c +++ b/arch/x86/mm/pat/set_memory.c @@ -744,11 +744,14 @@ EXPORT_SYMBOL_GPL(lookup_address); static pte_t *_lookup_address_cpa(struct cpa_data *cpa, unsigned long address, unsigned int *level) { - if (cpa->pgd) - return lookup_address_in_pgd(cpa->pgd + pgd_index(address), - address, level); + pgd_t *pgd; + + if (!cpa->pgd) + pgd = pgd_offset_k(address); + else + pgd = cpa->pgd + pgd_index(address); - return lookup_address(address, level); + return lookup_address_in_pgd(pgd, address, level); } /* -- 2.43.0