* [PATCH v2] RISC-V: Mark IORESOURCE_EXCLUSIVE for reserved mem instead of IORESOURCE_BUSY
@ 2022-05-12 6:09 ` Xianting Tian
0 siblings, 0 replies; 10+ messages in thread
From: Xianting Tian @ 2022-05-12 6:09 UTC (permalink / raw)
To: mick, paul.walmsley, palmer, aou, anup, akpm, wangkefeng.wang,
rppt, david, wangborong, twd2.me, seanjc, alex, petr.pavlu,
atishp
Cc: linux-riscv, linux-kernel, jianghuaming.jhm, guoren, Xianting Tian
Commit 00ab027a3b82 ("RISC-V: Add kernel image sections to the resource tree")
marked IORESOURCE_BUSY for reserved memory, which casued resource map
failed in subsequent operations of related driver, so remove the
IORESOURCE_BUSY flag. In order to prohibit userland mapping reserved
memory, mark IORESOURCE_EXCLUSIVE for it.
The code to reproduce the issue,
dts:
mem0: memory@a0000000 {
reg = <0x0 0xa0000000 0 0x1000000>;
no-map;
};
&test {
status = "okay";
memory-region = <&mem0>;
};
code:
np = of_parse_phandle(pdev->dev.of_node, "memory-region", 0);
ret = of_address_to_resource(np, 0, &r);
base = devm_ioremap_resource(&pdev->dev, &r);
// base = -EBUSY
Fixes: 00ab027a3b82 ("RISC-V: Add kernel image sections to the resource tree")
Reported-by: Huaming Jiang <jianghuaming.jhm@alibaba-inc.com>
Reviewed-by: Guo Ren <guoren@kernel.org>
Reviewed-by: Nick Kossifidis <mick@ics.forth.gr>
Signed-off-by: Xianting Tian <xianting.tian@linux.alibaba.com>
---
arch/riscv/kernel/setup.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/riscv/kernel/setup.c b/arch/riscv/kernel/setup.c
index 834eb652a7b9..e0a00739bd13 100644
--- a/arch/riscv/kernel/setup.c
+++ b/arch/riscv/kernel/setup.c
@@ -189,7 +189,7 @@ static void __init init_resources(void)
res = &mem_res[res_idx--];
res->name = "Reserved";
- res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
+ res->flags = IORESOURCE_MEM | IORESOURCE_EXCLUSIVE;
res->start = __pfn_to_phys(memblock_region_reserved_base_pfn(region));
res->end = __pfn_to_phys(memblock_region_reserved_end_pfn(region)) - 1;
@@ -214,7 +214,7 @@ static void __init init_resources(void)
if (unlikely(memblock_is_nomap(region))) {
res->name = "Reserved";
- res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
+ res->flags = IORESOURCE_MEM | IORESOURCE_EXCLUSIVE;
} else {
res->name = "System RAM";
res->flags = IORESOURCE_SYSTEM_RAM | IORESOURCE_BUSY;
--
2.17.1
_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv
^ permalink raw reply related [flat|nested] 10+ messages in thread* Re: [PATCH v2] RISC-V: Mark IORESOURCE_EXCLUSIVE for reserved mem instead of IORESOURCE_BUSY
2022-05-12 6:09 ` Xianting Tian
@ 2022-05-12 12:31 ` Heiko Stübner
-1 siblings, 0 replies; 10+ messages in thread
From: Heiko Stübner @ 2022-05-12 12:31 UTC (permalink / raw)
To: mick, paul.walmsley, palmer, aou, anup, akpm, wangkefeng.wang,
rppt, david, wangborong, twd2.me, seanjc, alex, petr.pavlu,
atishp, linux-riscv
Cc: linux-riscv, linux-kernel, jianghuaming.jhm, guoren,
Xianting Tian, Xianting Tian
Am Donnerstag, 12. Mai 2022, 08:09:10 CEST schrieb Xianting Tian:
> Commit 00ab027a3b82 ("RISC-V: Add kernel image sections to the resource tree")
> marked IORESOURCE_BUSY for reserved memory, which casued resource map
typo "caused" resource map
> failed in subsequent operations of related driver, so remove the
> IORESOURCE_BUSY flag. In order to prohibit userland mapping reserved
> memory, mark IORESOURCE_EXCLUSIVE for it.
Looking at the comment for IORESOURCE_EXCLUSIVE
(/* Userland may not map this resource */)
this also looks like the way better match for "no-map" :-) .
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Also on qemu + d1-nezha board
Tested-by: Heiko Stuebner <heiko@sntech.de>
Heiko
> The code to reproduce the issue,
> dts:
> mem0: memory@a0000000 {
> reg = <0x0 0xa0000000 0 0x1000000>;
> no-map;
> };
>
> &test {
> status = "okay";
> memory-region = <&mem0>;
> };
>
> code:
> np = of_parse_phandle(pdev->dev.of_node, "memory-region", 0);
> ret = of_address_to_resource(np, 0, &r);
> base = devm_ioremap_resource(&pdev->dev, &r);
> // base = -EBUSY
>
> Fixes: 00ab027a3b82 ("RISC-V: Add kernel image sections to the resource tree")
> Reported-by: Huaming Jiang <jianghuaming.jhm@alibaba-inc.com>
> Reviewed-by: Guo Ren <guoren@kernel.org>
> Reviewed-by: Nick Kossifidis <mick@ics.forth.gr>
> Signed-off-by: Xianting Tian <xianting.tian@linux.alibaba.com>
> ---
> arch/riscv/kernel/setup.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/arch/riscv/kernel/setup.c b/arch/riscv/kernel/setup.c
> index 834eb652a7b9..e0a00739bd13 100644
> --- a/arch/riscv/kernel/setup.c
> +++ b/arch/riscv/kernel/setup.c
> @@ -189,7 +189,7 @@ static void __init init_resources(void)
> res = &mem_res[res_idx--];
>
> res->name = "Reserved";
> - res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
> + res->flags = IORESOURCE_MEM | IORESOURCE_EXCLUSIVE;
> res->start = __pfn_to_phys(memblock_region_reserved_base_pfn(region));
> res->end = __pfn_to_phys(memblock_region_reserved_end_pfn(region)) - 1;
>
> @@ -214,7 +214,7 @@ static void __init init_resources(void)
>
> if (unlikely(memblock_is_nomap(region))) {
> res->name = "Reserved";
> - res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
> + res->flags = IORESOURCE_MEM | IORESOURCE_EXCLUSIVE;
> } else {
> res->name = "System RAM";
> res->flags = IORESOURCE_SYSTEM_RAM | IORESOURCE_BUSY;
>
^ permalink raw reply [flat|nested] 10+ messages in thread* Re: [PATCH v2] RISC-V: Mark IORESOURCE_EXCLUSIVE for reserved mem instead of IORESOURCE_BUSY
@ 2022-05-12 12:31 ` Heiko Stübner
0 siblings, 0 replies; 10+ messages in thread
From: Heiko Stübner @ 2022-05-12 12:31 UTC (permalink / raw)
To: mick, paul.walmsley, palmer, aou, anup, akpm, wangkefeng.wang,
rppt, david, wangborong, twd2.me, seanjc, alex, petr.pavlu,
atishp, linux-riscv
Cc: linux-riscv, linux-kernel, jianghuaming.jhm, guoren,
Xianting Tian, Xianting Tian
Am Donnerstag, 12. Mai 2022, 08:09:10 CEST schrieb Xianting Tian:
> Commit 00ab027a3b82 ("RISC-V: Add kernel image sections to the resource tree")
> marked IORESOURCE_BUSY for reserved memory, which casued resource map
typo "caused" resource map
> failed in subsequent operations of related driver, so remove the
> IORESOURCE_BUSY flag. In order to prohibit userland mapping reserved
> memory, mark IORESOURCE_EXCLUSIVE for it.
Looking at the comment for IORESOURCE_EXCLUSIVE
(/* Userland may not map this resource */)
this also looks like the way better match for "no-map" :-) .
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Also on qemu + d1-nezha board
Tested-by: Heiko Stuebner <heiko@sntech.de>
Heiko
> The code to reproduce the issue,
> dts:
> mem0: memory@a0000000 {
> reg = <0x0 0xa0000000 0 0x1000000>;
> no-map;
> };
>
> &test {
> status = "okay";
> memory-region = <&mem0>;
> };
>
> code:
> np = of_parse_phandle(pdev->dev.of_node, "memory-region", 0);
> ret = of_address_to_resource(np, 0, &r);
> base = devm_ioremap_resource(&pdev->dev, &r);
> // base = -EBUSY
>
> Fixes: 00ab027a3b82 ("RISC-V: Add kernel image sections to the resource tree")
> Reported-by: Huaming Jiang <jianghuaming.jhm@alibaba-inc.com>
> Reviewed-by: Guo Ren <guoren@kernel.org>
> Reviewed-by: Nick Kossifidis <mick@ics.forth.gr>
> Signed-off-by: Xianting Tian <xianting.tian@linux.alibaba.com>
> ---
> arch/riscv/kernel/setup.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/arch/riscv/kernel/setup.c b/arch/riscv/kernel/setup.c
> index 834eb652a7b9..e0a00739bd13 100644
> --- a/arch/riscv/kernel/setup.c
> +++ b/arch/riscv/kernel/setup.c
> @@ -189,7 +189,7 @@ static void __init init_resources(void)
> res = &mem_res[res_idx--];
>
> res->name = "Reserved";
> - res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
> + res->flags = IORESOURCE_MEM | IORESOURCE_EXCLUSIVE;
> res->start = __pfn_to_phys(memblock_region_reserved_base_pfn(region));
> res->end = __pfn_to_phys(memblock_region_reserved_end_pfn(region)) - 1;
>
> @@ -214,7 +214,7 @@ static void __init init_resources(void)
>
> if (unlikely(memblock_is_nomap(region))) {
> res->name = "Reserved";
> - res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
> + res->flags = IORESOURCE_MEM | IORESOURCE_EXCLUSIVE;
> } else {
> res->name = "System RAM";
> res->flags = IORESOURCE_SYSTEM_RAM | IORESOURCE_BUSY;
>
_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [PATCH v2] RISC-V: Mark IORESOURCE_EXCLUSIVE for reserved mem instead of IORESOURCE_BUSY
2022-05-12 6:09 ` Xianting Tian
@ 2022-05-16 8:50 ` Xianting Tian
-1 siblings, 0 replies; 10+ messages in thread
From: Xianting Tian @ 2022-05-16 8:50 UTC (permalink / raw)
To: mick, paul.walmsley, palmer, aou, anup, akpm, wangkefeng.wang,
rppt, david, wangborong, twd2.me, seanjc, alex, petr.pavlu,
atishp
Cc: linux-riscv, linux-kernel, jianghuaming.jhm, guoren, stable
Hi
Could I get any comments for the v2 patch, thanks
在 2022/5/12 下午2:09, Xianting Tian 写道:
> Commit 00ab027a3b82 ("RISC-V: Add kernel image sections to the resource tree")
> marked IORESOURCE_BUSY for reserved memory, which casued resource map
> failed in subsequent operations of related driver, so remove the
> IORESOURCE_BUSY flag. In order to prohibit userland mapping reserved
> memory, mark IORESOURCE_EXCLUSIVE for it.
>
> The code to reproduce the issue,
> dts:
> mem0: memory@a0000000 {
> reg = <0x0 0xa0000000 0 0x1000000>;
> no-map;
> };
>
> &test {
> status = "okay";
> memory-region = <&mem0>;
> };
>
> code:
> np = of_parse_phandle(pdev->dev.of_node, "memory-region", 0);
> ret = of_address_to_resource(np, 0, &r);
> base = devm_ioremap_resource(&pdev->dev, &r);
> // base = -EBUSY
>
> Fixes: 00ab027a3b82 ("RISC-V: Add kernel image sections to the resource tree")
> Reported-by: Huaming Jiang <jianghuaming.jhm@alibaba-inc.com>
> Reviewed-by: Guo Ren <guoren@kernel.org>
> Reviewed-by: Nick Kossifidis <mick@ics.forth.gr>
> Signed-off-by: Xianting Tian <xianting.tian@linux.alibaba.com>
> ---
> arch/riscv/kernel/setup.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/arch/riscv/kernel/setup.c b/arch/riscv/kernel/setup.c
> index 834eb652a7b9..e0a00739bd13 100644
> --- a/arch/riscv/kernel/setup.c
> +++ b/arch/riscv/kernel/setup.c
> @@ -189,7 +189,7 @@ static void __init init_resources(void)
> res = &mem_res[res_idx--];
>
> res->name = "Reserved";
> - res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
> + res->flags = IORESOURCE_MEM | IORESOURCE_EXCLUSIVE;
> res->start = __pfn_to_phys(memblock_region_reserved_base_pfn(region));
> res->end = __pfn_to_phys(memblock_region_reserved_end_pfn(region)) - 1;
>
> @@ -214,7 +214,7 @@ static void __init init_resources(void)
>
> if (unlikely(memblock_is_nomap(region))) {
> res->name = "Reserved";
> - res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
> + res->flags = IORESOURCE_MEM | IORESOURCE_EXCLUSIVE;
> } else {
> res->name = "System RAM";
> res->flags = IORESOURCE_SYSTEM_RAM | IORESOURCE_BUSY;
^ permalink raw reply [flat|nested] 10+ messages in thread* Re: [PATCH v2] RISC-V: Mark IORESOURCE_EXCLUSIVE for reserved mem instead of IORESOURCE_BUSY
@ 2022-05-16 8:50 ` Xianting Tian
0 siblings, 0 replies; 10+ messages in thread
From: Xianting Tian @ 2022-05-16 8:50 UTC (permalink / raw)
To: mick, paul.walmsley, palmer, aou, anup, akpm, wangkefeng.wang,
rppt, david, wangborong, twd2.me, seanjc, alex, petr.pavlu,
atishp
Cc: linux-riscv, linux-kernel, jianghuaming.jhm, guoren, stable
Hi
Could I get any comments for the v2 patch, thanks
在 2022/5/12 下午2:09, Xianting Tian 写道:
> Commit 00ab027a3b82 ("RISC-V: Add kernel image sections to the resource tree")
> marked IORESOURCE_BUSY for reserved memory, which casued resource map
> failed in subsequent operations of related driver, so remove the
> IORESOURCE_BUSY flag. In order to prohibit userland mapping reserved
> memory, mark IORESOURCE_EXCLUSIVE for it.
>
> The code to reproduce the issue,
> dts:
> mem0: memory@a0000000 {
> reg = <0x0 0xa0000000 0 0x1000000>;
> no-map;
> };
>
> &test {
> status = "okay";
> memory-region = <&mem0>;
> };
>
> code:
> np = of_parse_phandle(pdev->dev.of_node, "memory-region", 0);
> ret = of_address_to_resource(np, 0, &r);
> base = devm_ioremap_resource(&pdev->dev, &r);
> // base = -EBUSY
>
> Fixes: 00ab027a3b82 ("RISC-V: Add kernel image sections to the resource tree")
> Reported-by: Huaming Jiang <jianghuaming.jhm@alibaba-inc.com>
> Reviewed-by: Guo Ren <guoren@kernel.org>
> Reviewed-by: Nick Kossifidis <mick@ics.forth.gr>
> Signed-off-by: Xianting Tian <xianting.tian@linux.alibaba.com>
> ---
> arch/riscv/kernel/setup.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/arch/riscv/kernel/setup.c b/arch/riscv/kernel/setup.c
> index 834eb652a7b9..e0a00739bd13 100644
> --- a/arch/riscv/kernel/setup.c
> +++ b/arch/riscv/kernel/setup.c
> @@ -189,7 +189,7 @@ static void __init init_resources(void)
> res = &mem_res[res_idx--];
>
> res->name = "Reserved";
> - res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
> + res->flags = IORESOURCE_MEM | IORESOURCE_EXCLUSIVE;
> res->start = __pfn_to_phys(memblock_region_reserved_base_pfn(region));
> res->end = __pfn_to_phys(memblock_region_reserved_end_pfn(region)) - 1;
>
> @@ -214,7 +214,7 @@ static void __init init_resources(void)
>
> if (unlikely(memblock_is_nomap(region))) {
> res->name = "Reserved";
> - res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
> + res->flags = IORESOURCE_MEM | IORESOURCE_EXCLUSIVE;
> } else {
> res->name = "System RAM";
> res->flags = IORESOURCE_SYSTEM_RAM | IORESOURCE_BUSY;
_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv
^ permalink raw reply [flat|nested] 10+ messages in thread* Re: [PATCH v2] RISC-V: Mark IORESOURCE_EXCLUSIVE for reserved mem instead of IORESOURCE_BUSY
2022-05-16 8:50 ` Xianting Tian
@ 2022-05-16 9:03 ` Conor.Dooley
-1 siblings, 0 replies; 10+ messages in thread
From: Conor.Dooley @ 2022-05-16 9:03 UTC (permalink / raw)
To: xianting.tian, mick, paul.walmsley, palmer, aou, anup, akpm,
wangkefeng.wang, rppt, david, wangborong, twd2.me, seanjc, alex,
petr.pavlu, atishp
Cc: linux-riscv, linux-kernel, jianghuaming.jhm, guoren, stable
On 16/05/2022 09:50, Xianting Tian wrote:
> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
>
> Hi
>
> Could I get any comments for the v2 patch, thanks
Looks like you have 3 Reviewed-bys already & there's only been one full
working day since you sent the patch, probably just worth waiting a little
for Palmer to get around to picking it up :)
Thanks,
Conor.
>
> 在 2022/5/12 下午2:09, Xianting Tian 写道:
>> Commit 00ab027a3b82 ("RISC-V: Add kernel image sections to the resource tree")
>> marked IORESOURCE_BUSY for reserved memory, which casued resource map
>> failed in subsequent operations of related driver, so remove the
>> IORESOURCE_BUSY flag. In order to prohibit userland mapping reserved
>> memory, mark IORESOURCE_EXCLUSIVE for it.
>>
>> The code to reproduce the issue,
>> dts:
>> mem0: memory@a0000000 {
>> reg = <0x0 0xa0000000 0 0x1000000>;
>> no-map;
>> };
>>
>> &test {
>> status = "okay";
>> memory-region = <&mem0>;
>> };
>>
>> code:
>> np = of_parse_phandle(pdev->dev.of_node, "memory-region", 0);
>> ret = of_address_to_resource(np, 0, &r);
>> base = devm_ioremap_resource(&pdev->dev, &r);
>> // base = -EBUSY
>>
>> Fixes: 00ab027a3b82 ("RISC-V: Add kernel image sections to the resource tree")
>> Reported-by: Huaming Jiang <jianghuaming.jhm@alibaba-inc.com>
>> Reviewed-by: Guo Ren <guoren@kernel.org>
>> Reviewed-by: Nick Kossifidis <mick@ics.forth.gr>
>> Signed-off-by: Xianting Tian <xianting.tian@linux.alibaba.com>
>> ---
>> arch/riscv/kernel/setup.c | 4 ++--
>> 1 file changed, 2 insertions(+), 2 deletions(-)
>>
>> diff --git a/arch/riscv/kernel/setup.c b/arch/riscv/kernel/setup.c
>> index 834eb652a7b9..e0a00739bd13 100644
>> --- a/arch/riscv/kernel/setup.c
>> +++ b/arch/riscv/kernel/setup.c
>> @@ -189,7 +189,7 @@ static void __init init_resources(void)
>> res = &mem_res[res_idx--];
>>
>> res->name = "Reserved";
>> - res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
>> + res->flags = IORESOURCE_MEM | IORESOURCE_EXCLUSIVE;
>> res->start = __pfn_to_phys(memblock_region_reserved_base_pfn(region));
>> res->end = __pfn_to_phys(memblock_region_reserved_end_pfn(region)) - 1;
>>
>> @@ -214,7 +214,7 @@ static void __init init_resources(void)
>>
>> if (unlikely(memblock_is_nomap(region))) {
>> res->name = "Reserved";
>> - res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
>> + res->flags = IORESOURCE_MEM | IORESOURCE_EXCLUSIVE;
>> } else {
>> res->name = "System RAM";
>> res->flags = IORESOURCE_SYSTEM_RAM | IORESOURCE_BUSY;
>
> _______________________________________________
> linux-riscv mailing list
> linux-riscv@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-riscv
^ permalink raw reply [flat|nested] 10+ messages in thread* Re: [PATCH v2] RISC-V: Mark IORESOURCE_EXCLUSIVE for reserved mem instead of IORESOURCE_BUSY
@ 2022-05-16 9:03 ` Conor.Dooley
0 siblings, 0 replies; 10+ messages in thread
From: Conor.Dooley @ 2022-05-16 9:03 UTC (permalink / raw)
To: xianting.tian, mick, paul.walmsley, palmer, aou, anup, akpm,
wangkefeng.wang, rppt, david, wangborong, twd2.me, seanjc, alex,
petr.pavlu, atishp
Cc: linux-riscv, linux-kernel, jianghuaming.jhm, guoren, stable
On 16/05/2022 09:50, Xianting Tian wrote:
> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
>
> Hi
>
> Could I get any comments for the v2 patch, thanks
Looks like you have 3 Reviewed-bys already & there's only been one full
working day since you sent the patch, probably just worth waiting a little
for Palmer to get around to picking it up :)
Thanks,
Conor.
>
> 在 2022/5/12 下午2:09, Xianting Tian 写道:
>> Commit 00ab027a3b82 ("RISC-V: Add kernel image sections to the resource tree")
>> marked IORESOURCE_BUSY for reserved memory, which casued resource map
>> failed in subsequent operations of related driver, so remove the
>> IORESOURCE_BUSY flag. In order to prohibit userland mapping reserved
>> memory, mark IORESOURCE_EXCLUSIVE for it.
>>
>> The code to reproduce the issue,
>> dts:
>> mem0: memory@a0000000 {
>> reg = <0x0 0xa0000000 0 0x1000000>;
>> no-map;
>> };
>>
>> &test {
>> status = "okay";
>> memory-region = <&mem0>;
>> };
>>
>> code:
>> np = of_parse_phandle(pdev->dev.of_node, "memory-region", 0);
>> ret = of_address_to_resource(np, 0, &r);
>> base = devm_ioremap_resource(&pdev->dev, &r);
>> // base = -EBUSY
>>
>> Fixes: 00ab027a3b82 ("RISC-V: Add kernel image sections to the resource tree")
>> Reported-by: Huaming Jiang <jianghuaming.jhm@alibaba-inc.com>
>> Reviewed-by: Guo Ren <guoren@kernel.org>
>> Reviewed-by: Nick Kossifidis <mick@ics.forth.gr>
>> Signed-off-by: Xianting Tian <xianting.tian@linux.alibaba.com>
>> ---
>> arch/riscv/kernel/setup.c | 4 ++--
>> 1 file changed, 2 insertions(+), 2 deletions(-)
>>
>> diff --git a/arch/riscv/kernel/setup.c b/arch/riscv/kernel/setup.c
>> index 834eb652a7b9..e0a00739bd13 100644
>> --- a/arch/riscv/kernel/setup.c
>> +++ b/arch/riscv/kernel/setup.c
>> @@ -189,7 +189,7 @@ static void __init init_resources(void)
>> res = &mem_res[res_idx--];
>>
>> res->name = "Reserved";
>> - res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
>> + res->flags = IORESOURCE_MEM | IORESOURCE_EXCLUSIVE;
>> res->start = __pfn_to_phys(memblock_region_reserved_base_pfn(region));
>> res->end = __pfn_to_phys(memblock_region_reserved_end_pfn(region)) - 1;
>>
>> @@ -214,7 +214,7 @@ static void __init init_resources(void)
>>
>> if (unlikely(memblock_is_nomap(region))) {
>> res->name = "Reserved";
>> - res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
>> + res->flags = IORESOURCE_MEM | IORESOURCE_EXCLUSIVE;
>> } else {
>> res->name = "System RAM";
>> res->flags = IORESOURCE_SYSTEM_RAM | IORESOURCE_BUSY;
>
> _______________________________________________
> linux-riscv mailing list
> linux-riscv@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-riscv
_______________________________________________
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^ permalink raw reply [flat|nested] 10+ messages in thread* Re: [PATCH v2] RISC-V: Mark IORESOURCE_EXCLUSIVE for reserved mem instead of IORESOURCE_BUSY
2022-05-16 9:03 ` Conor.Dooley
@ 2022-05-16 9:10 ` Xianting Tian
-1 siblings, 0 replies; 10+ messages in thread
From: Xianting Tian @ 2022-05-16 9:10 UTC (permalink / raw)
To: Conor.Dooley, mick, paul.walmsley, palmer, aou, anup, akpm,
wangkefeng.wang, rppt, david, wangborong, twd2.me, seanjc, alex,
petr.pavlu, atishp
Cc: linux-riscv, linux-kernel, jianghuaming.jhm, guoren, stable
在 2022/5/16 下午5:03, Conor.Dooley@microchip.com 写道:
> On 16/05/2022 09:50, Xianting Tian wrote:
>> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
>>
>> Hi
>>
>> Could I get any comments for the v2 patch, thanks
> Looks like you have 3 Reviewed-bys already & there's only been one full
> working day since you sent the patch, probably just worth waiting a little
> for Palmer to get around to picking it up :)
> Thanks,
> Conor.
thanks :)
I just saw Heiko Stuebner gaved Review-by on patchwork.kernel.org, but I
didn't received the mail.
Let's wait Palmer to pick up.
>> 在 2022/5/12 下午2:09, Xianting Tian 写道:
>>> Commit 00ab027a3b82 ("RISC-V: Add kernel image sections to the resource tree")
>>> marked IORESOURCE_BUSY for reserved memory, which casued resource map
>>> failed in subsequent operations of related driver, so remove the
>>> IORESOURCE_BUSY flag. In order to prohibit userland mapping reserved
>>> memory, mark IORESOURCE_EXCLUSIVE for it.
>>>
>>> The code to reproduce the issue,
>>> dts:
>>> mem0: memory@a0000000 {
>>> reg = <0x0 0xa0000000 0 0x1000000>;
>>> no-map;
>>> };
>>>
>>> &test {
>>> status = "okay";
>>> memory-region = <&mem0>;
>>> };
>>>
>>> code:
>>> np = of_parse_phandle(pdev->dev.of_node, "memory-region", 0);
>>> ret = of_address_to_resource(np, 0, &r);
>>> base = devm_ioremap_resource(&pdev->dev, &r);
>>> // base = -EBUSY
>>>
>>> Fixes: 00ab027a3b82 ("RISC-V: Add kernel image sections to the resource tree")
>>> Reported-by: Huaming Jiang <jianghuaming.jhm@alibaba-inc.com>
>>> Reviewed-by: Guo Ren <guoren@kernel.org>
>>> Reviewed-by: Nick Kossifidis <mick@ics.forth.gr>
>>> Signed-off-by: Xianting Tian <xianting.tian@linux.alibaba.com>
>>> ---
>>> arch/riscv/kernel/setup.c | 4 ++--
>>> 1 file changed, 2 insertions(+), 2 deletions(-)
>>>
>>> diff --git a/arch/riscv/kernel/setup.c b/arch/riscv/kernel/setup.c
>>> index 834eb652a7b9..e0a00739bd13 100644
>>> --- a/arch/riscv/kernel/setup.c
>>> +++ b/arch/riscv/kernel/setup.c
>>> @@ -189,7 +189,7 @@ static void __init init_resources(void)
>>> res = &mem_res[res_idx--];
>>>
>>> res->name = "Reserved";
>>> - res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
>>> + res->flags = IORESOURCE_MEM | IORESOURCE_EXCLUSIVE;
>>> res->start = __pfn_to_phys(memblock_region_reserved_base_pfn(region));
>>> res->end = __pfn_to_phys(memblock_region_reserved_end_pfn(region)) - 1;
>>>
>>> @@ -214,7 +214,7 @@ static void __init init_resources(void)
>>>
>>> if (unlikely(memblock_is_nomap(region))) {
>>> res->name = "Reserved";
>>> - res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
>>> + res->flags = IORESOURCE_MEM | IORESOURCE_EXCLUSIVE;
>>> } else {
>>> res->name = "System RAM";
>>> res->flags = IORESOURCE_SYSTEM_RAM | IORESOURCE_BUSY;
>> _______________________________________________
>> linux-riscv mailing list
>> linux-riscv@lists.infradead.org
>> http://lists.infradead.org/mailman/listinfo/linux-riscv
_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv
^ permalink raw reply [flat|nested] 10+ messages in thread* Re: [PATCH v2] RISC-V: Mark IORESOURCE_EXCLUSIVE for reserved mem instead of IORESOURCE_BUSY
@ 2022-05-16 9:10 ` Xianting Tian
0 siblings, 0 replies; 10+ messages in thread
From: Xianting Tian @ 2022-05-16 9:10 UTC (permalink / raw)
To: Conor.Dooley, mick, paul.walmsley, palmer, aou, anup, akpm,
wangkefeng.wang, rppt, david, wangborong, twd2.me, seanjc, alex,
petr.pavlu, atishp
Cc: linux-riscv, linux-kernel, jianghuaming.jhm, guoren, stable
在 2022/5/16 下午5:03, Conor.Dooley@microchip.com 写道:
> On 16/05/2022 09:50, Xianting Tian wrote:
>> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
>>
>> Hi
>>
>> Could I get any comments for the v2 patch, thanks
> Looks like you have 3 Reviewed-bys already & there's only been one full
> working day since you sent the patch, probably just worth waiting a little
> for Palmer to get around to picking it up :)
> Thanks,
> Conor.
thanks :)
I just saw Heiko Stuebner gaved Review-by on patchwork.kernel.org, but I
didn't received the mail.
Let's wait Palmer to pick up.
>> 在 2022/5/12 下午2:09, Xianting Tian 写道:
>>> Commit 00ab027a3b82 ("RISC-V: Add kernel image sections to the resource tree")
>>> marked IORESOURCE_BUSY for reserved memory, which casued resource map
>>> failed in subsequent operations of related driver, so remove the
>>> IORESOURCE_BUSY flag. In order to prohibit userland mapping reserved
>>> memory, mark IORESOURCE_EXCLUSIVE for it.
>>>
>>> The code to reproduce the issue,
>>> dts:
>>> mem0: memory@a0000000 {
>>> reg = <0x0 0xa0000000 0 0x1000000>;
>>> no-map;
>>> };
>>>
>>> &test {
>>> status = "okay";
>>> memory-region = <&mem0>;
>>> };
>>>
>>> code:
>>> np = of_parse_phandle(pdev->dev.of_node, "memory-region", 0);
>>> ret = of_address_to_resource(np, 0, &r);
>>> base = devm_ioremap_resource(&pdev->dev, &r);
>>> // base = -EBUSY
>>>
>>> Fixes: 00ab027a3b82 ("RISC-V: Add kernel image sections to the resource tree")
>>> Reported-by: Huaming Jiang <jianghuaming.jhm@alibaba-inc.com>
>>> Reviewed-by: Guo Ren <guoren@kernel.org>
>>> Reviewed-by: Nick Kossifidis <mick@ics.forth.gr>
>>> Signed-off-by: Xianting Tian <xianting.tian@linux.alibaba.com>
>>> ---
>>> arch/riscv/kernel/setup.c | 4 ++--
>>> 1 file changed, 2 insertions(+), 2 deletions(-)
>>>
>>> diff --git a/arch/riscv/kernel/setup.c b/arch/riscv/kernel/setup.c
>>> index 834eb652a7b9..e0a00739bd13 100644
>>> --- a/arch/riscv/kernel/setup.c
>>> +++ b/arch/riscv/kernel/setup.c
>>> @@ -189,7 +189,7 @@ static void __init init_resources(void)
>>> res = &mem_res[res_idx--];
>>>
>>> res->name = "Reserved";
>>> - res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
>>> + res->flags = IORESOURCE_MEM | IORESOURCE_EXCLUSIVE;
>>> res->start = __pfn_to_phys(memblock_region_reserved_base_pfn(region));
>>> res->end = __pfn_to_phys(memblock_region_reserved_end_pfn(region)) - 1;
>>>
>>> @@ -214,7 +214,7 @@ static void __init init_resources(void)
>>>
>>> if (unlikely(memblock_is_nomap(region))) {
>>> res->name = "Reserved";
>>> - res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
>>> + res->flags = IORESOURCE_MEM | IORESOURCE_EXCLUSIVE;
>>> } else {
>>> res->name = "System RAM";
>>> res->flags = IORESOURCE_SYSTEM_RAM | IORESOURCE_BUSY;
>> _______________________________________________
>> linux-riscv mailing list
>> linux-riscv@lists.infradead.org
>> http://lists.infradead.org/mailman/listinfo/linux-riscv
^ permalink raw reply [flat|nested] 10+ messages in thread