From: Xunlei Pang <xpang@redhat.com> To: Baoquan He <bhe@redhat.com>, Xunlei Pang <xlpang@redhat.com> Cc: Robert LeBlanc <robert@leblancnet.us>, kexec@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] x86/crash: Update the stale comment in reserve_crashkernel() Date: Fri, 23 Dec 2016 16:37:33 +0800 [thread overview] Message-ID: <585CE24D.80208@redhat.com> (raw) In-Reply-To: <20161222032234.GB25035@x1> On 12/22/2016 at 11:22 AM, Baoquan He wrote: > On 12/15/16 at 11:30am, Xunlei Pang wrote: >> CRASH_KERNEL_ADDR_MAX was missing for a long time, update it >> with more detailed explanation. >> >> Cc: Robert LeBlanc <robert@leblancnet.us> >> Cc: Baoquan He <bhe@redhat.com> >> Signed-off-by: Xunlei Pang <xlpang@redhat.com> >> --- >> arch/x86/kernel/setup.c | 5 ++++- >> 1 file changed, 4 insertions(+), 1 deletion(-) >> >> diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c >> index 9c337b0..79ee507 100644 >> --- a/arch/x86/kernel/setup.c >> +++ b/arch/x86/kernel/setup.c >> @@ -575,7 +575,10 @@ static void __init reserve_crashkernel(void) >> /* 0 means: find the address automatically */ >> if (crash_base <= 0) { >> /* >> - * kexec want bzImage is below CRASH_KERNEL_ADDR_MAX >> + * Set CRASH_ADDR_LOW_MAX upper bound for crash range >> + * as old kexec-tools loads bzImage below that, unless >> + * "size,high" or "size@offset"(nonzero offset, see the >> + * else leg below) is specified. > Yes, this is a good catch. It might be better to add comment only about > this if branch. If you want to say more about the upper bounds, better OK, how about the following change? /* * Set CRASH_ADDR_LOW_MAX upper bound for crash memory. * as old kexec-tools loads bzImage below that, unless * "crashkernel=size[KMG],high" is specified. */ > discuss with Robert LeBlanc to see if it can be detailed in kdump.txt. Yes, this is independent of Robert's documentation patch. > > Also please CC to x86 maintainers, or akpm. They can help merge this. OK, thanks! Regards, Xunlei
WARNING: multiple messages have this Message-ID (diff)
From: Xunlei Pang <xpang@redhat.com> To: Baoquan He <bhe@redhat.com>, Xunlei Pang <xlpang@redhat.com> Cc: Robert LeBlanc <robert@leblancnet.us>, kexec@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] x86/crash: Update the stale comment in reserve_crashkernel() Date: Fri, 23 Dec 2016 16:37:33 +0800 [thread overview] Message-ID: <585CE24D.80208@redhat.com> (raw) In-Reply-To: <20161222032234.GB25035@x1> On 12/22/2016 at 11:22 AM, Baoquan He wrote: > On 12/15/16 at 11:30am, Xunlei Pang wrote: >> CRASH_KERNEL_ADDR_MAX was missing for a long time, update it >> with more detailed explanation. >> >> Cc: Robert LeBlanc <robert@leblancnet.us> >> Cc: Baoquan He <bhe@redhat.com> >> Signed-off-by: Xunlei Pang <xlpang@redhat.com> >> --- >> arch/x86/kernel/setup.c | 5 ++++- >> 1 file changed, 4 insertions(+), 1 deletion(-) >> >> diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c >> index 9c337b0..79ee507 100644 >> --- a/arch/x86/kernel/setup.c >> +++ b/arch/x86/kernel/setup.c >> @@ -575,7 +575,10 @@ static void __init reserve_crashkernel(void) >> /* 0 means: find the address automatically */ >> if (crash_base <= 0) { >> /* >> - * kexec want bzImage is below CRASH_KERNEL_ADDR_MAX >> + * Set CRASH_ADDR_LOW_MAX upper bound for crash range >> + * as old kexec-tools loads bzImage below that, unless >> + * "size,high" or "size@offset"(nonzero offset, see the >> + * else leg below) is specified. > Yes, this is a good catch. It might be better to add comment only about > this if branch. If you want to say more about the upper bounds, better OK, how about the following change? /* * Set CRASH_ADDR_LOW_MAX upper bound for crash memory. * as old kexec-tools loads bzImage below that, unless * "crashkernel=size[KMG],high" is specified. */ > discuss with Robert LeBlanc to see if it can be detailed in kdump.txt. Yes, this is independent of Robert's documentation patch. > > Also please CC to x86 maintainers, or akpm. They can help merge this. OK, thanks! Regards, Xunlei _______________________________________________ kexec mailing list kexec@lists.infradead.org http://lists.infradead.org/mailman/listinfo/kexec
next prev parent reply other threads:[~2016-12-23 8:36 UTC|newest] Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top 2016-12-15 3:30 [PATCH] x86/crash: Update the stale comment in reserve_crashkernel() Xunlei Pang 2016-12-15 3:30 ` Xunlei Pang 2016-12-22 3:22 ` Baoquan He 2016-12-22 3:22 ` Baoquan He 2016-12-23 8:37 ` Xunlei Pang [this message] 2016-12-23 8:37 ` Xunlei Pang
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