From: Masayoshi Mizuma <msys.mizuma@gmail.com>
To: Chao Fan <fanc.fnst@cn.fujitsu.com>
Cc: Borislav Petkov <bp@alien8.de>, "H. Peter Anvin" <hpa@zytor.com>,
Baoquan He <bhe@redhat.com>, Ingo Molnar <mingo@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
x86@kernel.org, linux-kernel@vger.kernel.org,
linux-efi@vger.kernel.org, linux-acpi@vger.kernel.org,
mingo@redhat.com, keescook@chromium.org, rjw@rjwysocki.net,
lenb@kernel.org, ard.biesheuvel@linaro.org,
indou.takao@jp.fujitsu.com, caoj.fnst@cn.fujitsu.com
Subject: Re: [PATCH v8 0/3] x86/boot/KASLR: Parse ACPI table and limit kaslr in immovable memory
Date: Mon, 11 Feb 2019 15:11:20 -0500 [thread overview]
Message-ID: <20190211201118.pot6347rp2ieljel@gabell> (raw)
In-Reply-To: <20190211014605.GC1544@localhost.localdomain>
Hi Chao,
Thank you for your review.
On Mon, Feb 11, 2019 at 09:46:05AM +0800, Chao Fan wrote:
> On Tue, Feb 05, 2019 at 10:05:16AM -0500, Masayoshi Mizuma wrote:
> [...]
>
> Hi Masa,
>
> Sorry for delay, since last days were Chinese holiday.
>
> >diff --git a/arch/x86/boot/compressed/acpi.c b/arch/x86/boot/compressed/acpi.c
> >index c5a949335..7dd61b943 100644
> >--- a/arch/x86/boot/compressed/acpi.c
> >+++ b/arch/x86/boot/compressed/acpi.c
> >@@ -288,6 +288,7 @@ int count_immovable_mem_regions(void)
> > struct acpi_subtable_header *sub_table;
> > struct acpi_table_header *table_header;
> > char arg[MAX_ACPI_ARG_LENGTH];
> >+ unsigned long long possible_addr, max_possible_addr = 0;
>
> This line is so long that it should be added in first line.
Thanks. I will simplify around the local variables.
>
> > int num = 0;
> >
> > if (cmdline_find_option("acpi", arg, sizeof(arg)) == 3 &&
> >@@ -308,10 +309,19 @@ int count_immovable_mem_regions(void)
> > struct acpi_srat_mem_affinity *ma;
> >
> > ma = (struct acpi_srat_mem_affinity *)sub_table;
> >- if (!(ma->flags & ACPI_SRAT_MEM_HOT_PLUGGABLE) && ma->length) {
> >- immovable_mem[num].start = ma->base_address;
> >- immovable_mem[num].size = ma->length;
> >- num++;
> >+ if (ma->length) {
> >+ if (ma->flags & ACPI_SRAT_MEM_HOT_PLUGGABLE) {
> >+ possible_addr =
> >+ ma->base_address + ma->length;
> >+ if (possible_addr > max_possible_addr)
> >+ max_possible_addr =
> >+ possible_addr;
> >+ } else {
> >+ immovable_mem[num].start =
> >+ ma->base_address;
> >+ immovable_mem[num].size = ma->length;
> >+ num++;
> >+ }
> > }
>
> It looks better in another mail where you add a new function.
Thanks!
- Masa
next prev parent reply other threads:[~2019-02-11 20:11 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-10 8:41 [PATCH v8 0/3] x86/boot/KASLR: Parse ACPI table and limit kaslr in immovable memory Chao Fan
2018-10-10 8:41 ` [PATCH v8 1/3] x86/boot: Add acpitb.c to parse acpi tables Chao Fan
2018-10-11 10:57 ` Borislav Petkov
2018-10-12 1:56 ` Chao Fan
2018-10-12 9:36 ` Chao Fan
2018-10-12 9:46 ` Borislav Petkov
2018-10-12 10:03 ` Chao Fan
2018-10-16 2:48 ` Chao Fan
2018-10-16 12:40 ` Borislav Petkov
2018-10-17 1:10 ` Chao Fan
2018-10-15 20:26 ` Masayoshi Mizuma
2018-10-16 1:50 ` Chao Fan
2018-10-10 8:41 ` [PATCH v8 2/3] x86/boot/KASLR: Walk srat tables to filter immovable memory Chao Fan
2018-10-10 8:41 ` [PATCH v8 3/3] x86/boot/KASLR: Limit kaslr to choosing the " Chao Fan
2018-10-10 8:59 ` [PATCH v8 0/3] x86/boot/KASLR: Parse ACPI table and limit kaslr in " Borislav Petkov
2018-10-10 9:06 ` Baoquan He
2018-10-10 9:12 ` Chao Fan
2018-10-10 9:21 ` Baoquan He
2018-10-10 9:14 ` Thomas Gleixner
2018-10-10 9:19 ` Borislav Petkov
2018-10-10 9:30 ` Baoquan He
2018-10-10 19:44 ` Masayoshi Mizuma
2018-10-11 0:29 ` Baoquan He
2018-10-11 5:51 ` Chao Fan
2018-10-13 20:19 ` Masayoshi Mizuma
2018-10-13 20:34 ` Borislav Petkov
2018-10-13 21:45 ` Masayoshi Mizuma
2018-10-13 22:05 ` Borislav Petkov
2018-10-15 0:50 ` Masayoshi Mizuma
2018-10-16 15:13 ` Masayoshi Mizuma
2018-10-16 19:11 ` Borislav Petkov
2018-10-16 19:54 ` Masayoshi Mizuma
2018-10-16 19:59 ` Borislav Petkov
2018-10-22 15:42 ` Masayoshi Mizuma
2018-10-23 2:48 ` Chao Fan
2018-10-24 19:21 ` Masayoshi Mizuma
2018-10-25 1:22 ` Chao Fan
2018-10-25 10:33 ` Borislav Petkov
2018-10-25 13:40 ` Masayoshi Mizuma
2018-11-06 12:10 ` Borislav Petkov
2018-11-06 14:07 ` Baoquan He
2018-11-07 1:21 ` Chao Fan
2018-11-06 18:45 ` Borislav Petkov
2018-11-06 19:36 ` Masayoshi Mizuma
2018-11-06 20:45 ` Borislav Petkov
2018-11-06 22:21 ` Masayoshi Mizuma
2018-11-08 10:51 ` Borislav Petkov
2018-11-10 10:54 ` Borislav Petkov
2018-11-11 13:45 ` Masayoshi Mizuma
2019-02-05 15:05 ` Masayoshi Mizuma
2019-02-08 18:26 ` Borislav Petkov
2019-02-09 0:24 ` Masayoshi Mizuma
2019-02-11 1:46 ` Chao Fan
2019-02-11 20:11 ` Masayoshi Mizuma [this message]
2018-10-10 17:16 ` Borislav Petkov
2018-10-11 1:30 ` Chao Fan
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