From mboxrd@z Thu Jan 1 00:00:00 1970 From: Julien Grall Subject: [PATCH v2 05/10] xen/arm: p2m: Extend p2m_lookup parameters to retrieve the p2m type Date: Mon, 9 Dec 2013 03:34:02 +0000 Message-ID: <1386560047-17500-6-git-send-email-julien.grall@linaro.org> References: <1386560047-17500-1-git-send-email-julien.grall@linaro.org> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mail6.bemta4.messagelabs.com ([85.158.143.247]) by lists.xen.org with esmtp (Exim 4.72) (envelope-from ) id 1Vprby-0007Sn-1D for xen-devel@lists.xenproject.org; Mon, 09 Dec 2013 03:34:22 +0000 Received: by mail-ea0-f180.google.com with SMTP id f15so1289642eak.11 for ; Sun, 08 Dec 2013 19:34:20 -0800 (PST) In-Reply-To: <1386560047-17500-1-git-send-email-julien.grall@linaro.org> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: xen-devel@lists.xenproject.org Cc: stefano.stabellini@citrix.com, Julien Grall , tim@xen.org, ian.campbell@citrix.com, patches@linaro.org List-Id: xen-devel@lists.xenproject.org Signed-off-by: Julien Grall --- Changes in v2: - This patch was "Add p2m_get_entry" on the previous version - Don't add a new function but only extend p2m_lookup --- xen/arch/arm/p2m.c | 13 +++++++++++-- xen/arch/arm/traps.c | 6 +++--- xen/include/asm-arm/p2m.h | 2 +- 3 files changed, 15 insertions(+), 6 deletions(-) diff --git a/xen/arch/arm/p2m.c b/xen/arch/arm/p2m.c index e43804c..f0bbaca 100644 --- a/xen/arch/arm/p2m.c +++ b/xen/arch/arm/p2m.c @@ -71,11 +71,17 @@ static lpae_t *p2m_map_first(struct p2m_domain *p2m, paddr_t addr) * There are no processor functions to do a stage 2 only lookup therefore we * do a a software walk. */ -paddr_t p2m_lookup(struct domain *d, paddr_t paddr) +paddr_t p2m_lookup(struct domain *d, paddr_t paddr, p2m_type_t *t) { struct p2m_domain *p2m = &d->arch.p2m; lpae_t pte, *first = NULL, *second = NULL, *third = NULL; paddr_t maddr = INVALID_PADDR; + p2m_type_t _t; + + /* Allow t to be NULL */ + t = t ?: &_t; + + *t = p2m_invalid; spin_lock(&p2m->lock); @@ -99,7 +105,10 @@ paddr_t p2m_lookup(struct domain *d, paddr_t paddr) done: if ( pte.p2m.valid ) + { maddr = (pte.bits & PADDR_MASK & PAGE_MASK) | (paddr & ~PAGE_MASK); + *t = pte.p2m.p2mt; + } if (third) unmap_domain_page(third); if (second) unmap_domain_page(second); @@ -502,7 +511,7 @@ err: unsigned long gmfn_to_mfn(struct domain *d, unsigned long gpfn) { - paddr_t p = p2m_lookup(d, pfn_to_paddr(gpfn)); + paddr_t p = p2m_lookup(d, pfn_to_paddr(gpfn), NULL); return p >> PAGE_SHIFT; } diff --git a/xen/arch/arm/traps.c b/xen/arch/arm/traps.c index 458128e..0a811e7 100644 --- a/xen/arch/arm/traps.c +++ b/xen/arch/arm/traps.c @@ -1267,7 +1267,7 @@ void dump_guest_s1_walk(struct domain *d, vaddr_t addr) printk("dom%d VA 0x%08"PRIvaddr"\n", d->domain_id, addr); printk(" TTBCR: 0x%08"PRIregister"\n", ttbcr); printk(" TTBR0: 0x%016"PRIx64" = 0x%"PRIpaddr"\n", - ttbr0, p2m_lookup(d, ttbr0 & PAGE_MASK)); + ttbr0, p2m_lookup(d, ttbr0 & PAGE_MASK, NULL)); if ( ttbcr & TTBCR_EAE ) { @@ -1280,7 +1280,7 @@ void dump_guest_s1_walk(struct domain *d, vaddr_t addr) return; } - paddr = p2m_lookup(d, ttbr0 & PAGE_MASK); + paddr = p2m_lookup(d, ttbr0 & PAGE_MASK, NULL); if ( paddr == INVALID_PADDR ) { printk("Failed TTBR0 maddr lookup\n"); @@ -1295,7 +1295,7 @@ void dump_guest_s1_walk(struct domain *d, vaddr_t addr) !(first[offset] & 0x2) ) goto done; - paddr = p2m_lookup(d, first[offset] & PAGE_MASK); + paddr = p2m_lookup(d, first[offset] & PAGE_MASK, NULL); if ( paddr == INVALID_PADDR ) { diff --git a/xen/include/asm-arm/p2m.h b/xen/include/asm-arm/p2m.h index 56bbf4d..f4bcd7d 100644 --- a/xen/include/asm-arm/p2m.h +++ b/xen/include/asm-arm/p2m.h @@ -58,7 +58,7 @@ int p2m_alloc_table(struct domain *d); void p2m_load_VTTBR(struct domain *d); /* Look up the MFN corresponding to a domain's PFN. */ -paddr_t p2m_lookup(struct domain *d, paddr_t gpfn); +paddr_t p2m_lookup(struct domain *d, paddr_t gpfn, p2m_type_t *t); /* Setup p2m RAM mapping for domain d from start-end. */ int p2m_populate_ram(struct domain *d, paddr_t start, paddr_t end); -- 1.7.10.4