From patchwork Mon Aug 15 06:29:55 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gavin Shan X-Patchwork-Id: 1666312 Return-Path: X-Original-To: patchwork-incoming@bilbo.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: bilbo.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=cJb3lqaV; dkim-atps=neutral Received: from legolas.ozlabs.org (legolas.ozlabs.org [IPv6:2404:9400:2:0:216:3eff:fee2:8c49]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by bilbo.ozlabs.org (Postfix) with ESMTPS id 4M5l3622wQz9s2R for ; Mon, 15 Aug 2022 16:38:10 +1000 (AEST) Received: by legolas.ozlabs.org (Postfix) id 4M5l354WfGz1ygQ; Mon, 15 Aug 2022 16:38:09 +1000 (AEST) Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; 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Mon, 15 Aug 2022 02:30:24 -0400 X-MC-Unique: F1yxOnxbNsm5dqfxcdIVcQ-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.rdu2.redhat.com [10.11.54.4]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 1DC113804074; Mon, 15 Aug 2022 06:30:24 +0000 (UTC) Received: from gshan.redhat.com (vpn2-54-77.bne.redhat.com [10.64.54.77]) by smtp.corp.redhat.com (Postfix) with ESMTP id 9688F2026D64; Mon, 15 Aug 2022 06:30:20 +0000 (UTC) From: Gavin Shan To: qemu-arm@nongnu.org Cc: qemu-devel@nongnu.org, maz@kernel.org, eric.auger@redhat.com, cohuck@redhat.com, zhenyzha@redhat.com, peter.maydell@linaro.org, richard.henderson@linaro.org, shan.gavin@gmail.com Subject: [PATCH v2 1/4] hw/arm/virt: Rename variable size to region_size in virt_set_memmap() Date: Mon, 15 Aug 2022 14:29:55 +0800 Message-Id: <20220815062958.100366-2-gshan@redhat.com> In-Reply-To: <20220815062958.100366-1-gshan@redhat.com> References: <20220815062958.100366-1-gshan@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.78 on 10.11.54.4 Received-SPF: pass client-ip=170.10.129.124; envelope-from=gshan@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -28 X-Spam_score: -2.9 X-Spam_bar: -- X-Spam_report: (-2.9 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.082, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" This renames variable 'size' to 'region_size' in virt_set_memmap(). It's counterpart to 'region_base', which will be introducded in next patch. No functional change intended. Signed-off-by: Gavin Shan --- hw/arm/virt.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/hw/arm/virt.c b/hw/arm/virt.c index 9633f822f3..f8e9f3e205 100644 --- a/hw/arm/virt.c +++ b/hw/arm/virt.c @@ -1744,12 +1744,12 @@ static void virt_set_memmap(VirtMachineState *vms, int pa_bits) vms->highest_gpa = memtop - 1; for (i = VIRT_LOWMEMMAP_LAST; i < ARRAY_SIZE(extended_memmap); i++) { - hwaddr size = extended_memmap[i].size; + hwaddr region_size = extended_memmap[i].size; bool fits; - base = ROUND_UP(base, size); + base = ROUND_UP(base, region_size); vms->memmap[i].base = base; - vms->memmap[i].size = size; + vms->memmap[i].size = region_size; /* * Check each device to see if they fit in the PA space, @@ -1757,9 +1757,9 @@ static void virt_set_memmap(VirtMachineState *vms, int pa_bits) * * For each device that doesn't fit, disable it. */ - fits = (base + size) <= BIT_ULL(pa_bits); + fits = (base + region_size) <= BIT_ULL(pa_bits); if (fits) { - vms->highest_gpa = base + size - 1; + vms->highest_gpa = base + region_size - 1; } switch (i) { @@ -1774,7 +1774,7 @@ static void virt_set_memmap(VirtMachineState *vms, int pa_bits) break; } - base += size; + base += region_size; } if (device_memory_size > 0) { From patchwork Mon Aug 15 06:29:56 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gavin Shan X-Patchwork-Id: 1666310 Return-Path: X-Original-To: patchwork-incoming@bilbo.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: bilbo.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=Fq84GC6y; dkim-atps=neutral Received: from legolas.ozlabs.org (legolas.ozlabs.org [IPv6:2404:9400:2:0:216:3eff:fee2:8c49]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by bilbo.ozlabs.org (Postfix) with ESMTPS id 4M5l055FVkz9s2R for ; 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Mon, 15 Aug 2022 02:30:28 -0400 X-MC-Unique: gVxPYvISNeyk7gweXIHdaQ-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.rdu2.redhat.com [10.11.54.4]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id CCAC01C05EB2; Mon, 15 Aug 2022 06:30:27 +0000 (UTC) Received: from gshan.redhat.com (vpn2-54-77.bne.redhat.com [10.64.54.77]) by smtp.corp.redhat.com (Postfix) with ESMTP id 975D82026D64; Mon, 15 Aug 2022 06:30:24 +0000 (UTC) From: Gavin Shan To: qemu-arm@nongnu.org Cc: qemu-devel@nongnu.org, maz@kernel.org, eric.auger@redhat.com, cohuck@redhat.com, zhenyzha@redhat.com, peter.maydell@linaro.org, richard.henderson@linaro.org, shan.gavin@gmail.com Subject: [PATCH v2 2/4] hw/arm/virt: Introduce variable region_base in virt_set_memmap() Date: Mon, 15 Aug 2022 14:29:56 +0800 Message-Id: <20220815062958.100366-3-gshan@redhat.com> In-Reply-To: <20220815062958.100366-1-gshan@redhat.com> References: <20220815062958.100366-1-gshan@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.78 on 10.11.54.4 Received-SPF: pass client-ip=170.10.129.124; envelope-from=gshan@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -28 X-Spam_score: -2.9 X-Spam_bar: -- X-Spam_report: (-2.9 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.082, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" This introduces variable 'region_base' for the base address of the specific high memory region. It's the preparatory to improve the address assignment for high memory region in next patch. No functional change intended. Signed-off-by: Gavin Shan --- hw/arm/virt.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/hw/arm/virt.c b/hw/arm/virt.c index f8e9f3e205..582a8960fc 100644 --- a/hw/arm/virt.c +++ b/hw/arm/virt.c @@ -1744,11 +1744,11 @@ static void virt_set_memmap(VirtMachineState *vms, int pa_bits) vms->highest_gpa = memtop - 1; for (i = VIRT_LOWMEMMAP_LAST; i < ARRAY_SIZE(extended_memmap); i++) { + hwaddr region_base = ROUND_UP(base, extended_memmap[i].size); hwaddr region_size = extended_memmap[i].size; bool fits; - base = ROUND_UP(base, region_size); - vms->memmap[i].base = base; + vms->memmap[i].base = region_base; vms->memmap[i].size = region_size; /* @@ -1757,9 +1757,9 @@ static void virt_set_memmap(VirtMachineState *vms, int pa_bits) * * For each device that doesn't fit, disable it. */ - fits = (base + region_size) <= BIT_ULL(pa_bits); + fits = (region_base + region_size) <= BIT_ULL(pa_bits); if (fits) { - vms->highest_gpa = base + region_size - 1; + vms->highest_gpa = region_base + region_size - 1; } switch (i) { @@ -1774,7 +1774,7 @@ static void virt_set_memmap(VirtMachineState *vms, int pa_bits) break; } - base += region_size; + base = region_base + region_size; } if (device_memory_size > 0) { From patchwork Mon Aug 15 06:29:57 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gavin Shan X-Patchwork-Id: 1666316 Return-Path: X-Original-To: patchwork-incoming@bilbo.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: bilbo.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=QypNpQQt; dkim-atps=neutral Received: from legolas.ozlabs.org (legolas.ozlabs.org [150.107.73.247]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by bilbo.ozlabs.org (Postfix) with ESMTPS id 4M5lMc2dPfz9s2R for ; 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Mon, 15 Aug 2022 02:30:32 -0400 X-MC-Unique: UfjwJR72Ose0doB9_tAhsg-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.rdu2.redhat.com [10.11.54.4]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id A6F61185A7BA; Mon, 15 Aug 2022 06:30:31 +0000 (UTC) Received: from gshan.redhat.com (vpn2-54-77.bne.redhat.com [10.64.54.77]) by smtp.corp.redhat.com (Postfix) with ESMTP id 780282026D64; Mon, 15 Aug 2022 06:30:28 +0000 (UTC) From: Gavin Shan To: qemu-arm@nongnu.org Cc: qemu-devel@nongnu.org, maz@kernel.org, eric.auger@redhat.com, cohuck@redhat.com, zhenyzha@redhat.com, peter.maydell@linaro.org, richard.henderson@linaro.org, shan.gavin@gmail.com Subject: [PATCH v2 3/4] hw/arm/virt: Improve address assignment for high memory regions Date: Mon, 15 Aug 2022 14:29:57 +0800 Message-Id: <20220815062958.100366-4-gshan@redhat.com> In-Reply-To: <20220815062958.100366-1-gshan@redhat.com> References: <20220815062958.100366-1-gshan@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.78 on 10.11.54.4 Received-SPF: pass client-ip=170.10.133.124; envelope-from=gshan@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -21 X-Spam_score: -2.2 X-Spam_bar: -- X-Spam_report: (-2.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.082, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" There are three high memory regions, which are VIRT_HIGH_REDIST2, VIRT_HIGH_PCIE_ECAM and VIRT_HIGH_PCIE_MMIO. Their base addresses are floating on highest RAM address. However, they can be disabled in several cases. (1) One specific high memory region is disabled by developer by toggling vms->highmem_{redists, ecam, mmio}. (2) VIRT_HIGH_PCIE_ECAM region is disabled on machine, which is 'virt-2.12' or ealier than it. (3) VIRT_HIGH_PCIE_ECAM region is disabled when firmware is loaded on 32-bits system. (4) One specific high memory region is disabled when it breaks the PA space limit. The current implementation of virt_set_memmap() isn't comprehensive because the space for one specific high memory region is always reserved from the PA space for case (1), (2) and (3). In the code, 'base' and 'vms->highest_gpa' are always increased for those three cases. It's unnecessary since the assigned space of the disabled high memory region won't be used afterwards. This improves the address assignment for those three high memory region by skipping the address assignment for one specific high memory region if it has been disabled in case (1), (2) and (3). Signed-off-by: Gavin Shan --- hw/arm/virt.c | 42 +++++++++++++++++++++++++----------------- 1 file changed, 25 insertions(+), 17 deletions(-) diff --git a/hw/arm/virt.c b/hw/arm/virt.c index 582a8960fc..e38b6919c9 100644 --- a/hw/arm/virt.c +++ b/hw/arm/virt.c @@ -1746,10 +1746,26 @@ static void virt_set_memmap(VirtMachineState *vms, int pa_bits) for (i = VIRT_LOWMEMMAP_LAST; i < ARRAY_SIZE(extended_memmap); i++) { hwaddr region_base = ROUND_UP(base, extended_memmap[i].size); hwaddr region_size = extended_memmap[i].size; - bool fits; + bool *region_enabled, fits; - vms->memmap[i].base = region_base; - vms->memmap[i].size = region_size; + switch (i) { + case VIRT_HIGH_GIC_REDIST2: + region_enabled = &vms->highmem_redists; + break; + case VIRT_HIGH_PCIE_ECAM: + region_enabled = &vms->highmem_ecam; + break; + case VIRT_HIGH_PCIE_MMIO: + region_enabled = &vms->highmem_mmio; + break; + default: + region_enabled = NULL; + } + + /* Skip unknwon or disabled regions */ + if (!region_enabled || !*region_enabled) { + continue; + } /* * Check each device to see if they fit in the PA space, @@ -1759,22 +1775,14 @@ static void virt_set_memmap(VirtMachineState *vms, int pa_bits) */ fits = (region_base + region_size) <= BIT_ULL(pa_bits); if (fits) { - vms->highest_gpa = region_base + region_size - 1; - } + vms->memmap[i].base = region_base; + vms->memmap[i].size = region_size; - switch (i) { - case VIRT_HIGH_GIC_REDIST2: - vms->highmem_redists &= fits; - break; - case VIRT_HIGH_PCIE_ECAM: - vms->highmem_ecam &= fits; - break; - case VIRT_HIGH_PCIE_MMIO: - vms->highmem_mmio &= fits; - break; + base = region_base + region_size; + vms->highest_gpa = region_base + region_size - 1; + } else { + *region_enabled = false; } - - base = region_base + region_size; } if (device_memory_size > 0) { From patchwork Mon Aug 15 06:29:58 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gavin Shan X-Patchwork-Id: 1666315 Return-Path: X-Original-To: patchwork-incoming@bilbo.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: bilbo.ozlabs.org; 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Mon, 15 Aug 2022 06:30:35 +0000 (UTC) Received: from gshan.redhat.com (vpn2-54-77.bne.redhat.com [10.64.54.77]) by smtp.corp.redhat.com (Postfix) with ESMTP id 45BE62026D64; Mon, 15 Aug 2022 06:30:31 +0000 (UTC) From: Gavin Shan To: qemu-arm@nongnu.org Cc: qemu-devel@nongnu.org, maz@kernel.org, eric.auger@redhat.com, cohuck@redhat.com, zhenyzha@redhat.com, peter.maydell@linaro.org, richard.henderson@linaro.org, shan.gavin@gmail.com Subject: [PATCH v2 4/4] virt/hw/virt: Add virt_set_high_memmap() helper Date: Mon, 15 Aug 2022 14:29:58 +0800 Message-Id: <20220815062958.100366-5-gshan@redhat.com> In-Reply-To: <20220815062958.100366-1-gshan@redhat.com> References: <20220815062958.100366-1-gshan@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.78 on 10.11.54.4 Received-SPF: pass client-ip=170.10.129.124; envelope-from=gshan@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -28 X-Spam_score: -2.9 X-Spam_bar: -- X-Spam_report: (-2.9 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.082, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" The logic to assign high memory region's address in virt_set_memmap() is independent. Lets move the logic to virt_set_high_memmap() helper. "each device" is replaced by "each region" in the comments. No functional change intended. Signed-off-by: Gavin Shan Tested-by:zhenyzha@redhat.com --- hw/arm/virt.c | 92 ++++++++++++++++++++++++++++----------------------- 1 file changed, 50 insertions(+), 42 deletions(-) diff --git a/hw/arm/virt.c b/hw/arm/virt.c index e38b6919c9..4dde08a924 100644 --- a/hw/arm/virt.c +++ b/hw/arm/virt.c @@ -1688,6 +1688,55 @@ static uint64_t virt_cpu_mp_affinity(VirtMachineState *vms, int idx) return arm_cpu_mp_affinity(idx, clustersz); } +static void virt_set_high_memmap(VirtMachineState *vms, + hwaddr base, int pa_bits) +{ + hwaddr region_base, region_size; + bool *region_enabled, fits; + int i; + + for (i = VIRT_LOWMEMMAP_LAST; i < ARRAY_SIZE(extended_memmap); i++) { + region_base = ROUND_UP(base, extended_memmap[i].size); + region_size = extended_memmap[i].size; + + switch (i) { + case VIRT_HIGH_GIC_REDIST2: + region_enabled = &vms->highmem_redists; + break; + case VIRT_HIGH_PCIE_ECAM: + region_enabled = &vms->highmem_ecam; + break; + case VIRT_HIGH_PCIE_MMIO: + region_enabled = &vms->highmem_mmio; + break; + default: + region_enabled = NULL; + } + + /* Skip unknwon or disabled regions */ + if (!region_enabled || !*region_enabled) { + continue; + } + + /* + * Check each region to see if they fit in the PA space, + * moving highest_gpa as we go. + * + * For each device that doesn't fit, disable it. + */ + fits = (region_base + region_size) <= BIT_ULL(pa_bits); + if (fits) { + vms->memmap[i].base = region_base; + vms->memmap[i].size = region_size; + + base = region_base + region_size; + vms->highest_gpa = region_base + region_size - 1; + } else { + *region_enabled = false; + } + } +} + static void virt_set_memmap(VirtMachineState *vms, int pa_bits) { MachineState *ms = MACHINE(vms); @@ -1742,48 +1791,7 @@ static void virt_set_memmap(VirtMachineState *vms, int pa_bits) /* We know for sure that at least the memory fits in the PA space */ vms->highest_gpa = memtop - 1; - - for (i = VIRT_LOWMEMMAP_LAST; i < ARRAY_SIZE(extended_memmap); i++) { - hwaddr region_base = ROUND_UP(base, extended_memmap[i].size); - hwaddr region_size = extended_memmap[i].size; - bool *region_enabled, fits; - - switch (i) { - case VIRT_HIGH_GIC_REDIST2: - region_enabled = &vms->highmem_redists; - break; - case VIRT_HIGH_PCIE_ECAM: - region_enabled = &vms->highmem_ecam; - break; - case VIRT_HIGH_PCIE_MMIO: - region_enabled = &vms->highmem_mmio; - break; - default: - region_enabled = NULL; - } - - /* Skip unknwon or disabled regions */ - if (!region_enabled || !*region_enabled) { - continue; - } - - /* - * Check each device to see if they fit in the PA space, - * moving highest_gpa as we go. - * - * For each device that doesn't fit, disable it. - */ - fits = (region_base + region_size) <= BIT_ULL(pa_bits); - if (fits) { - vms->memmap[i].base = region_base; - vms->memmap[i].size = region_size; - - base = region_base + region_size; - vms->highest_gpa = region_base + region_size - 1; - } else { - *region_enabled = false; - } - } + virt_set_high_memmap(vms, base, pa_bits); if (device_memory_size > 0) { ms->device_memory = g_malloc0(sizeof(*ms->device_memory));