From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AG47ELvZxkkuOAbNftr/BqqaNNIK8Cqos4Vm9zqmabOwaUqmNuxLBRS6NMfvtMgWlD/TamMWyxB0 ARC-Seal: i=1; a=rsa-sha256; t=1521228610; cv=none; d=google.com; s=arc-20160816; b=kmKgPkKOabjSY24fN+OOYTf39WtPBK1O0wUhm0yZYFlIXQwn0DzsdZ6G0z5GXoK7wn YR/Q1ZxzunYudp5ZUV/V8/YB/svYS1PJMDvAyrrn4sEzm/vjzv/ZkZBU8d7QuDJqfDje cv9nvwRCpzBPy7VFXNpEK8QQIe034WXopSz115cC3Z1erk54lfKe0tEl8gpsyEF2qnJL uA6XfJ5pTcXpRIn58k/N9QuiWrs3PM/+uSbJ7h7UEYjG1ZfVJODdmwrSR/VHR6OmRIb5 KXhgYyAG5AhPadaFhF3GORchlQu4lpxtFCGsqOEPUmY4DlTa5uGMkdloFmJRbrAq+Rmv 3IxQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature:arc-authentication-results; bh=TcOVtVnr+aW/8VDEtvIk3oEsqpy7c98bNgeUFUA7HCA=; b=Mky/HoER8qBxSqiqgjQgzmaGIz2nIeMm4vlkathntcysxl2tlaN6joB/Btx3of6IPY 23MNaq36Ux8dnXsuG6oMjdLX1OSCSKakigndV5eaRI7XCuLCTxrIZkrRLtfgMeO0jXaO kQELtG4ZfNSpNaIwVgu0BeMCR/qh3Ac/BuZcudhhtb1oBtu08KPFKEq6jlQGKnaRRapi SPUcp3lTCwGAu70aO1eCkxbv/Tuyq3cFiwf2s0pWo4gSt9St8w4fJmXNEXlAz0R/IEH/ r3ZG7EOLVxyDMqrzXsWqGivv8+idSqJdHi5konerapMS+8F83bjpxQfTFCC2mwT5fa8d BJ5Q== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass (test mode) header.i=@8bytes.org header.s=mail-1 header.b=GkdCcOQ7; spf=pass (google.com: domain of joro@8bytes.org designates 2a01:238:4383:600:38bc:a715:4b6d:a889 as permitted sender) smtp.mailfrom=joro@8bytes.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=8bytes.org Authentication-Results: mx.google.com; dkim=pass (test mode) header.i=@8bytes.org header.s=mail-1 header.b=GkdCcOQ7; spf=pass (google.com: domain of joro@8bytes.org designates 2a01:238:4383:600:38bc:a715:4b6d:a889 as permitted sender) smtp.mailfrom=joro@8bytes.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=8bytes.org From: Joerg Roedel To: Thomas Gleixner , Ingo Molnar , "H . Peter Anvin" Cc: x86@kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, Linus Torvalds , Andy Lutomirski , Dave Hansen , Josh Poimboeuf , Juergen Gross , Peter Zijlstra , Borislav Petkov , Jiri Kosina , Boris Ostrovsky , Brian Gerst , David Laight , Denys Vlasenko , Eduardo Valentin , Greg KH , Will Deacon , aliguori@amazon.com, daniel.gruss@iaik.tugraz.at, hughd@google.com, keescook@google.com, Andrea Arcangeli , Waiman Long , Pavel Machek , jroedel@suse.de, joro@8bytes.org Subject: [PATCH 23/35] x86/mm/legacy: Populate the user page-table with user pgd's Date: Fri, 16 Mar 2018 20:29:41 +0100 Message-Id: <1521228593-3820-24-git-send-email-joro@8bytes.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1521228593-3820-1-git-send-email-joro@8bytes.org> References: <1521228593-3820-1-git-send-email-joro@8bytes.org> X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: =?utf-8?q?1595123811172678799?= X-GMAIL-MSGID: =?utf-8?q?1595123811172678799?= X-Mailing-List: linux-kernel@vger.kernel.org List-ID: From: Joerg Roedel Also populate the user-spage pgd's in the user page-table. Signed-off-by: Joerg Roedel --- arch/x86/include/asm/pgtable-2level.h | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/arch/x86/include/asm/pgtable-2level.h b/arch/x86/include/asm/pgtable-2level.h index 685ffe8..c399ea5 100644 --- a/arch/x86/include/asm/pgtable-2level.h +++ b/arch/x86/include/asm/pgtable-2level.h @@ -19,6 +19,9 @@ static inline void native_set_pte(pte_t *ptep , pte_t pte) static inline void native_set_pmd(pmd_t *pmdp, pmd_t pmd) { +#ifdef CONFIG_PAGE_TABLE_ISOLATION + pmd.pud.p4d.pgd = pti_set_user_pgtbl(&pmdp->pud.p4d.pgd, pmd.pud.p4d.pgd); +#endif *pmdp = pmd; } @@ -58,6 +61,9 @@ static inline pte_t native_ptep_get_and_clear(pte_t *xp) #ifdef CONFIG_SMP static inline pmd_t native_pmdp_get_and_clear(pmd_t *xp) { +#ifdef CONFIG_PAGE_TABLE_ISOLATION + pti_set_user_pgtbl(&xp->pud.p4d.pgd, __pgd(0)); +#endif return __pmd(xchg((pmdval_t *)xp, 0)); } #else @@ -67,6 +73,9 @@ static inline pmd_t native_pmdp_get_and_clear(pmd_t *xp) #ifdef CONFIG_SMP static inline pud_t native_pudp_get_and_clear(pud_t *xp) { +#ifdef CONFIG_PAGE_TABLE_ISOLATION + pti_set_user_pgtbl(&xp->p4d.pgd, __pgd(0)); +#endif return __pud(xchg((pudval_t *)xp, 0)); } #else -- 2.7.4